Pennock's Fiero Forum
  General Fiero Chat
  Engine Decarbinizing

Post New Topic  Post A Reply
Email This Page to Someone! | Printable Version


next newest topic | next oldest topic
Engine Decarbinizing by 85fieroguy
Started on: 08-27-2015 09:00 PM
Replies: 38 (674 views)
Last post by: bmwguru on 09-07-2015 04:54 AM
85fieroguy
Member
Posts: 309
From: Chicago
Registered: Aug 2015


Feedback score: N/A
Leave feedback

Rate this member

Report this Post08-27-2015 09:00 PM Click Here to See the Profile for 85fieroguySend a Private Message to 85fieroguyEdit/Delete MessageReply w/QuoteDirect Link to This Post
Does it help, or is it " Vodoo mechanics" ????? Have anyone ever did this to their V-6 ????
IP: Logged
PFF
System Bot
Gall757
Member
Posts: 10938
From: Holland, MI
Registered: Jun 2010


Feedback score: N/A
Leave feedback





Total ratings: 90
Rate this member

Report this Post08-27-2015 10:03 PM Click Here to See the Profile for Gall757Send a Private Message to Gall757Edit/Delete MessageReply w/QuoteDirect Link to This Post
Can you tell us what exactly 'decarbinizing' is?
IP: Logged
85fieroguy
Member
Posts: 309
From: Chicago
Registered: Aug 2015


Feedback score: N/A
Leave feedback

Rate this member

Report this Post08-27-2015 10:09 PM Click Here to See the Profile for 85fieroguySend a Private Message to 85fieroguyEdit/Delete MessageReply w/QuoteDirect Link to This Post
Have a neighbor who used " DeKarbonizer-4", ran it thru his engine, lots of black smoke, then clearing. Supposed to loosen carbon inside the engine, especially valve seats. ' Voodo mechanics" ?????
IP: Logged
tshark
Member
Posts: 4388
From:
Registered: Feb 2014


Feedback score:    (6)
Leave feedback





Total ratings: 68
Rate this member

Report this Post08-27-2015 10:30 PM Click Here to See the Profile for tsharkSend a Private Message to tsharkEdit/Delete MessageReply w/QuoteDirect Link to This Post
I wouldn't recommend this on a high mileage engine, unless it's been done regularly. I took an S-10 Blazer in to a shop for a warranty repair. They used that stuff, and it surely loosened up carbon deposits --into the main bearing. True, that was a Vortec 4.3 V6, but I'm guessing the same thing could happen. I got a crate ACDelco engine with a 10-year, 100,000-mile warranty on it, as a result, but I'm doubting you'll have that much luck with your Fiero.
IP: Logged
Grantman
Member
Posts: 1420
From: Brownton, Minnesota, USA
Registered: Dec 2011


Feedback score:    (22)
Leave feedback

Rate this member

Report this Post08-27-2015 10:43 PM Click Here to See the Profile for GrantmanSend a Private Message to GrantmanEdit/Delete MessageReply w/QuoteDirect Link to This Post
Seafoam is also used. There is video on you tube comparing several of the decarbonizing products. they had a pinhead camera inserted before and after. not much carbon came off. It looks like it's doing something with all the smoke that comes out but older mechanics claim using water accomplishes the same thing.

the liquid is sucked in via the power brake booster hose. goes right to the intake manifold. good way to have a neighbor call the fire department!!
IP: Logged
Khw
Member
Posts: 11139
From: South Weber, UT. U.S.A.
Registered: Jun 2008


Feedback score: (1)
Leave feedback





Total ratings: 134
Rate this member

Report this Post08-27-2015 11:23 PM Click Here to See the Profile for KhwSend a Private Message to KhwEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Gall757:

Can you tell us what exactly 'decarbinizing' is?


Doubtful Every Car And Red Bus Imply Needed Industrial Zoning In Gerogia.
IP: Logged
Kitskaboodle
Member
Posts: 3083
From: San Jose, Ca.
Registered: Nov 2004


Feedback score:    (8)
Leave feedback

Rate this member

Report this Post08-28-2015 01:11 AM Click Here to See the Profile for KitskaboodleSend a Private Message to KitskaboodleEdit/Delete MessageReply w/QuoteDirect Link to This Post
I Seafoam everything i own on a regular basis although I have never heard of injecting it through the brake booster hose. How's it supposed to get in to the intake system that way??
Kit
IP: Logged
FIEROPHREK
Member
Posts: 4424
From: a dig
Registered: Mar 2004


Feedback score: (5)
Leave feedback





Total ratings: 137
Rate this member

Report this Post08-28-2015 07:41 AM Click Here to See the Profile for FIEROPHREKSend a Private Message to FIEROPHREKEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Kitskaboodle:

I Seafoam everything i own on a regular basis although I have never heard of injecting it through the brake booster hose. How's it supposed to get in to the intake system that way??
Kit


The brake booster hose is a vacuum source for the brake booster. It's a straight shot right into the intake of the engine.

------------------

ARCHIES JUNK IS FASTER THAN SHAUNNA'S JUNK

12.3 is faster than a 13.2

IP: Logged
jaskispyder
Member
Posts: 21510
From: Northern MI
Registered: Jun 2002


Feedback score:    (22)
Leave feedback





Total ratings: 205
Rate this member

Report this Post08-28-2015 08:32 AM Click Here to See the Profile for jaskispyderSend a Private Message to jaskispyderEdit/Delete MessageReply w/QuoteDirect Link to This Post
Does the vehicle run poorly? If not, leave it alone
IP: Logged
Grantman
Member
Posts: 1420
From: Brownton, Minnesota, USA
Registered: Dec 2011


Feedback score:    (22)
Leave feedback

Rate this member

Report this Post08-28-2015 08:41 AM Click Here to See the Profile for GrantmanSend a Private Message to GrantmanEdit/Delete MessageReply w/QuoteDirect Link to This Post
you just can't pour it in or let it be sucked in too fast. there is a risk of hydro-locking, but it's pretty obvious if your pushing too much into the hose. engine will quit.
IP: Logged
dratts
Member
Posts: 8373
From: Coeur d' alene Idaho USA
Registered: Apr 2001


Feedback score: N/A
Leave feedback





Total ratings: 118
Rate this member

Report this Post08-28-2015 10:34 AM Click Here to See the Profile for drattsSend a Private Message to drattsEdit/Delete MessageReply w/QuoteDirect Link to This Post
N*s had a problem with carboning up because older drivers never floored them. Cadillac recommended that the drivers do a heavy acceleration periodically.
IP: Logged
PFF
System Bot
bkw88
Member
Posts: 274
From: Homer MI
Registered: Dec 2008


Feedback score: N/A
Leave feedback

Rate this member

Report this Post08-28-2015 11:03 AM Click Here to See the Profile for bkw88Send a Private Message to bkw88Edit/Delete MessageReply w/QuoteDirect Link to This Post
Decarbonizing is a thing of the past. I used to upsell the top engine cleaning at shops I worked at. With today's fuels, specially the amount of ethanol that is in our fuels. It acts as the cleaner. You can use all the methods listed above to do this if you want. I do not recommend sea foam. It causes too many other issues, like fouled plugs, missfires, and can take out a oxygen sensor fast, one issue is that it does not clean out the most important thing.....the EGR passages. That is where most carbon lives in the motor. Hope this info is helpful
Brian
IP: Logged
johnyrottin
Member
Posts: 5495
From: Northwest Florida
Registered: Oct 2007


Feedback score:    (8)
Leave feedback





Total ratings: 85
Rate this member

Report this Post08-28-2015 12:25 PM Click Here to See the Profile for johnyrottinSend a Private Message to johnyrottinEdit/Delete MessageReply w/QuoteDirect Link to This Post
...and remember what happened to Han Solo with all that carbonitizing.
IP: Logged
TopNotch
Member
Posts: 3537
From: Lawrenceville, GA USA
Registered: Feb 2009


Feedback score:    (7)
Leave feedback





Total ratings: 60
Rate this member

Report this Post08-28-2015 03:06 PM Click Here to See the Profile for TopNotchClick Here to visit TopNotch's HomePageSend a Private Message to TopNotchEdit/Delete MessageReply w/QuoteDirect Link to This Post
When I took my 88 duke apart at 200,000 miles to rebuild it, I didn't see a lot of carbon. I think it was more of a problem before electronic fuel injection, which more precisely controls the fuel-air mixture.
IP: Logged
dobey
Member
Posts: 11572
From:
Registered: Sep 2001


Feedback score: N/A
Leave feedback





Total ratings: 371
User Banned

Report this Post08-28-2015 04:04 PM Click Here to See the Profile for dobeySend a Private Message to dobeyEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Gall757:

Can you tell us what exactly 'decarbinizing' is?


Removing all the assault rifles from it.
IP: Logged
rogergarrison
Member
Posts: 49601
From: A Western Caribbean Island/ Columbus, Ohio
Registered: Apr 99


Feedback score: N/A
Leave feedback





Total ratings: 551
Rate this member

Report this Post08-28-2015 06:29 PM Click Here to See the Profile for rogergarrisonSend a Private Message to rogergarrisonEdit/Delete MessageReply w/QuoteDirect Link to This Post
When cars had carbs, I did it all the time by trickling coke into it while holding the throttle a littlle open to like 1500 rpm. I backed off a bit if it started to stall, they poured more in. I dont know how you would do it to a FI engine though. It blew out smoke and chunks of carbon thru the exhaust.
IP: Logged
85fieroguy
Member
Posts: 309
From: Chicago
Registered: Aug 2015


Feedback score: N/A
Leave feedback

Rate this member

Report this Post08-28-2015 06:43 PM Click Here to See the Profile for 85fieroguySend a Private Message to 85fieroguyEdit/Delete MessageReply w/QuoteDirect Link to This Post
Thanks guys for the posts. Did not intend to do it with the L44 V-6, but you hear stuff and wonder if your missing something.
IP: Logged
BHall71
Member
Posts: 351
From: Yukon, OK. U.S.A.
Registered: Jun 2007


Feedback score: (1)
Leave feedback

Rate this member

Report this Post08-28-2015 10:53 PM Click Here to See the Profile for BHall71Send a Private Message to BHall71Edit/Delete MessageReply w/QuoteDirect Link to This Post
I have a cylinder on my 2.8 that burns oil and fouls the plug about every 2000 miles. Used to pull the plug & clean it up for another good 2k. Started using Seafoam and don't have to pull the plug anymore.

On a good running engine with no oil burning issues I don't think it would be needed.

Brian
IP: Logged
Patrick
Member
Posts: 38210
From: Vancouver, British Columbia, Canada
Registered: Apr 99


Feedback score: (1)
Leave feedback





Total ratings: 464
Rate this member

Report this Post08-29-2015 02:25 PM Click Here to See the Profile for PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by rogergarrison:

When cars had carbs, I did it all the time by trickling coke into it while holding the throttle a littlle open to like 1500 rpm.


It was supposed to go up your nose!

All kidding aside, I assume you're referring to a beverage and not to a white powdery substance... but why would you have used a sugary liquid? IMO that would be the last stuff I'd want sucked into my engine.
IP: Logged
joesfiero
Member
Posts: 2181
From: North Port,FL,USA
Registered: Jan 2008


Feedback score:    (11)
Leave feedback

Rate this member

Report this Post08-29-2015 05:15 PM Click Here to See the Profile for joesfieroSend a Private Message to joesfieroEdit/Delete MessageReply w/QuoteDirect Link to This Post
The GM top engine clean was some powerful stuff, would melt through stuff if left saoking too long. The method of using the booster hose for any of these products is sketchy at best especially with anyone who doesn't know exactly what they are doing. Its also not the best method on some cars considering the vacuum source could be on one side of the intake and only cleaning one bank of cylinders. Not to mention you could hydrolock the motor and bend a rod if not careful.

The best way to clean the inside of the motor is with a pressurized spray bottle and nozzle specially made for this application, placed before the throttle body to allow the best dispersement across all cylinders.

Also as said before the N* motors would clog up in the EGR ports real bad, when I worked at Cadillac we had a decarbon service that we performed, had to actually take the intake off and get into the ports on the heads to properly clean them.

-Joe
IP: Logged
jediperk
Member
Posts: 588
From: Center of the Universe
Registered: May 2013


Feedback score: (2)
Leave feedback

Rate this member

Report this Post08-29-2015 08:33 PM Click Here to See the Profile for jediperkSend a Private Message to jediperkEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by dratts:

N*s had a problem with carboning up because older drivers never floored them. Cadillac recommended that the drivers do a heavy acceleration periodically.


My N* definitely is low risk for carbon build up due to lack of flooring the accelerator
IP: Logged
PFF
System Bot
rogergarrison
Member
Posts: 49601
From: A Western Caribbean Island/ Columbus, Ohio
Registered: Apr 99


Feedback score: N/A
Leave feedback





Total ratings: 551
Rate this member

Report this Post08-30-2015 11:59 AM Click Here to See the Profile for rogergarrisonSend a Private Message to rogergarrisonEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Patrick:

It was supposed to go up your nose!

All kidding aside, I assume you're referring to a beverage and not to a white powdery substance... but why would you have used a sugary liquid? IMO that would be the last stuff I'd want sucked into my engine.


Everyone did it, even seen it at dealerships. It def blew the carbon out. How about when Chevy first came out with the 265 V8 in 1955. They notoriously burned a lot of oil new because of the way they were made. The 'recall' fix was the dealers ran Bon Ami cleanser thru the running engine to score up the rings and cylinder walls to fix it. ....followed by a rinse and oil change. They stopped burning oil.

IP: Logged
Patrick
Member
Posts: 38210
From: Vancouver, British Columbia, Canada
Registered: Apr 99


Feedback score: (1)
Leave feedback





Total ratings: 464
Rate this member

Report this Post08-30-2015 05:46 PM Click Here to See the Profile for PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by rogergarrison:

How about when Chevy first came out with the 265 V8 in 1955. They notoriously burned a lot of oil new because of the way they were made. The 'recall' fix was the dealers ran Bon Ami cleanser thru the running engine to score up the rings and cylinder walls to fix it. ....followed by a rinse and oil change. They stopped burning oil.


I've heard many times of Bon Ami being used in this manner... and it sort of makes sense (not that I would try it).

 
quote
Originally posted by rogergarrison:

Everyone did it, even seen it at dealerships. It def blew the carbon out.


"Everyone"??? Sorry Roger, I don't believe it. I have never heard of anyone purposely sucking Coke or Pepsi or whatever cola drink into their engine before. How was Coke supposed to do anything more than any other liquid would've? If it was the acidity of the Coke that might've helped to dissolve carbon deposits, surely there's something else without sugar in it that would've worked a whole lot better.

[This message has been edited by Patrick (edited 08-30-2015).]

IP: Logged
bmwguru
Member
Posts: 4692
From: Howell, NJ USA
Registered: Sep 2006


Feedback score:    (38)
Leave feedback





Total ratings: 131
Rate this member

Report this Post08-30-2015 06:32 PM Click Here to See the Profile for bmwguruClick Here to visit bmwguru's HomePageSend a Private Message to bmwguruEdit/Delete MessageReply w/QuoteDirect Link to This Post
We pull the intakes and "walnut blast" most direct injected engines. The other stuff like seafoam makes little difference on those. The first walnut blast tool we had was an aftermarket made one from ECS Tuning. It was so frustrating to deal with because it was always temperamental. I bought the factory tool from BMW and it was worth every cent.
As for the Fiero.....there is no need to walnut blast because the fuel injector sprays fuel prior to the intake valve. I don't think I have seen a non direct injected engine with a properly working pcv system ever to actually need decarbonizing to the point of causing a noticeable power loss or fuel economy loss.
Dave
IP: Logged
Neils88
Member
Posts: 4056
From: Jeddore,Nova Scotia
Registered: Aug 2013


Feedback score: N/A
Leave feedback





Total ratings: 56
Rate this member

Report this Post08-30-2015 09:35 PM Click Here to See the Profile for Neils88Send a Private Message to Neils88Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Patrick:

"Everyone"??? Sorry Roger, I don't believe it. I have never heard of anyone purposely sucking Coke or Pepsi or whatever cola drink into their engine before. How was Coke supposed to do anything more than any other liquid would've? If it was the acidity of the Coke that might've helped to dissolve carbon deposits, surely there's something else without sugar in it that would've worked a whole lot better.



We used to do it with straight water. Poured in the same way. It did a great job of steam cleaning everything as it flashed off through the intake. Not required anymore with the new, cleaner fuels.
IP: Logged
Patrick
Member
Posts: 38210
From: Vancouver, British Columbia, Canada
Registered: Apr 99


Feedback score: (1)
Leave feedback





Total ratings: 464
Rate this member

Report this Post08-30-2015 10:00 PM Click Here to See the Profile for PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Neils88:

We used to do it with straight water. Poured in the same way. It did a great job of steam cleaning everything as it flashed off through the intake. Not required anymore with the new, cleaner fuels.


Neil, I built a simple water injection system for my big block Chevy back about 1975, so I know all about using water. However... I never ever ever EVER heard of anyone using Coca-Cola.

IP: Logged
rogergarrison
Member
Posts: 49601
From: A Western Caribbean Island/ Columbus, Ohio
Registered: Apr 99


Feedback score: N/A
Leave feedback





Total ratings: 551
Rate this member

Report this Post08-31-2015 03:09 PM Click Here to See the Profile for rogergarrisonSend a Private Message to rogergarrisonEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Patrick:

"Everyone"??? Sorry Roger, I don't believe it. I have never heard of anyone purposely sucking Coke or Pepsi or whatever cola drink into their engine before. How was Coke supposed to do anything more than any other liquid would've? If it was the acidity of the Coke that might've helped to dissolve carbon deposits, surely there's something else without sugar in it that would've worked a whole lot better.



I dont know where the idea of coke started...maybe because it eats stuff up. But all my friends did it occasionally to their cars. I had a Chevy, Dodge and Lincoln dealership all do it at times. I watched the Lincoln dealer do it to my 77 Town Car when it started pinging. Stopped it right away. Maybe cold water would do the same thing, dont know. I watched another mechanic trying to fix a sticking valve with some concoction that included auto trans fluid down the carb of the running engine. Some old school mechanics had all kinds of little tricks.

IP: Logged
danscrazymodshop
Member
Posts: 69
From: Gansevoort, NY United States
Registered: Jul 2015


Feedback score: N/A
Leave feedback

Rate this member

Report this Post08-31-2015 04:38 PM Click Here to See the Profile for danscrazymodshopSend a Private Message to danscrazymodshopEdit/Delete MessageReply w/QuoteDirect Link to This Post
I've used water, sea foam, Berrymans, and wire wheeling. My 86 SE had a gallon of water run through the throttle body. Consequently when had the car smog tested at Planet Hyundai (where I worked at this time) the lead tech told the smog tech about my car "Hey get a load of this, his Fiero which sat in a field abandoned for 18 years which I thought for sure would be automatic fail ran a cleaner smog test than any other car on our lot and that includes the new cars." So don't underestimate the power of steam cleaning the innards of your engine. I did mine just buy using a plastic spray bottle pointed at the throttle body. Spray slowly and don't worry as your engine will sputter and letting you know if you spraying too fast. Don't be in a hurry. This is the best way as water flashes into steam in the cylinders and leaves no chemical residue behind like commercial cleaners. This is of course after I precleaned it with Berrymans and before that even running the intake manifold sections in my dishwasher while the wife wasn't home. The heads were wire wheeled and piston tops wire wheeled. The coca trick is for cars with rings that are stuck. You pour coke down the spark plug holes and let the phosphoric acid eat away the rust or carbon build up on the rings.
IP: Logged
danscrazymodshop
Member
Posts: 69
From: Gansevoort, NY United States
Registered: Jul 2015


Feedback score: N/A
Leave feedback

Rate this member

Report this Post08-31-2015 04:51 PM Click Here to See the Profile for danscrazymodshopSend a Private Message to danscrazymodshopEdit/Delete MessageReply w/QuoteDirect Link to This Post

danscrazymodshop

69 posts
Member since Jul 2015
Some Corvair guys had a bottle that sat next to engine which injected Marvel Mystery Oil as a "Upper cylinder lubricator" Early VW guys I seem to recall had this also. I personally recommend pouring 1 bottle of ATF into your gas tank with a fill up every once in a while as it keeps your fuel tank and lines from rusting plus it prevents your injectors from getting varnished up for cars that sit. Don't do it just before smog time as it could cause it to smoke slightly until you run the tank clean but you can see how it would help everything else. It's the same as running Marvel Mystery oil in the gas but much better because ATF cleans better because of all the detergents in it.
IP: Logged
85fieroguy
Member
Posts: 309
From: Chicago
Registered: Aug 2015


Feedback score: N/A
Leave feedback

Rate this member

Report this Post08-31-2015 05:42 PM Click Here to See the Profile for 85fieroguySend a Private Message to 85fieroguyEdit/Delete MessageReply w/QuoteDirect Link to This Post
I'm a little new, whats ATF ????
IP: Logged
Patrick
Member
Posts: 38210
From: Vancouver, British Columbia, Canada
Registered: Apr 99


Feedback score: (1)
Leave feedback





Total ratings: 464
Rate this member

Report this Post08-31-2015 06:11 PM Click Here to See the Profile for PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by 85fieroguy:

I'm a little new, whats ATF ????


Alternator Toning Fluid.
IP: Logged
PFF
System Bot
Patrick
Member
Posts: 38210
From: Vancouver, British Columbia, Canada
Registered: Apr 99


Feedback score: (1)
Leave feedback





Total ratings: 464
Rate this member

Report this Post08-31-2015 06:23 PM Click Here to See the Profile for PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post

Patrick

38210 posts
Member since Apr 99
 
quote
Originally posted by danscrazymodshop:

The coca trick is for cars with rings that are stuck. You pour coke down the spark plug holes and let the phosphoric acid eat away the rust or carbon build up on the rings.


Okay, that helps explain it a little... but I'd think a purer form of phosphoric acid (without sugar!) might be little better for the engine internals.

 
quote
Originally posted by danscrazymodshop:

I personally recommend pouring 1 bottle of ATF into your gas tank with a fill up every once in a while as it keeps your fuel tank and lines from rusting...


Don't know how good that would be for the O2 sensor when done on a regular basis?
IP: Logged
2.5
Member
Posts: 43235
From: Southern MN
Registered: May 2007


Feedback score: (1)
Leave feedback





Total ratings: 184
Rate this member

Report this Post09-01-2015 11:10 AM Click Here to See the Profile for 2.5Send a Private Message to 2.5Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by 85fieroguy:

I'm a little new, whats ATF ????


Automatic Transmission Fluid.

IP: Logged
2.5
Member
Posts: 43235
From: Southern MN
Registered: May 2007


Feedback score: (1)
Leave feedback





Total ratings: 184
Rate this member

Report this Post09-01-2015 11:14 AM Click Here to See the Profile for 2.5Send a Private Message to 2.5Edit/Delete MessageReply w/QuoteDirect Link to This Post

2.5

43235 posts
Member since May 2007
Decarbonizing to some folks means getting on the gas hard, up in the RPMS, "Blow the carbon out".
IP: Logged
Jason88Notchie
Member
Posts: 1821
From: Elyria, Ohio, USA
Registered: Oct 2009


Feedback score: N/A
Leave feedback

Rate this member

Report this Post09-01-2015 11:41 AM Click Here to See the Profile for Jason88NotchieSend a Private Message to Jason88NotchieEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by johnyrottin:

...and remember what happened to Han Solo with all that carbonitizing.


Vader took his pizza away!
IP: Logged
MadProfessor8138
Member
Posts: 351
From: Ekron,Kentucky
Registered: May 2015


Feedback score: N/A
Leave feedback

Rate this member

Report this Post09-03-2015 11:42 PM Click Here to See the Profile for MadProfessor8138Send a Private Message to MadProfessor8138Edit/Delete MessageReply w/QuoteDirect Link to This Post
Back in the good old days of leaded fuel......rice was also a good choice for knocking the carbon off the valves...just bring the rpm's up a bit and drop a little at a time down the carb.
It's hard enough to bust the carbon loose but soft enough not to interfere with the valves seating.
And no,that's not why they came up with the term (rice burner)....lol

Water down the carb doesn't work because of the steam cleaning principal so much as it works because of the cold water hitting the hot valve and fracturing the carbon deposits due to the sudden temperature change....the carbon is busted off of the valve.
Many of the old cars actually had a water injection bottle factory installed specifically for this purpose.

With today's cleaner fuel....nothing more than a bottle of Marvel Mystery oil (it truly is a mystery as to why it works so well) in the fuel tank every once in a while and a bottle in the crankcase oil about 500 miles before the next oil change should be all that's ever needed.
ATF is also an acceptable substitute.....

[This message has been edited by MadProfessor8138 (edited 09-03-2015).]

IP: Logged
MadProfessor8138
Member
Posts: 351
From: Ekron,Kentucky
Registered: May 2015


Feedback score: N/A
Leave feedback

Rate this member

Report this Post09-03-2015 11:53 PM Click Here to See the Profile for MadProfessor8138Send a Private Message to MadProfessor8138Edit/Delete MessageReply w/QuoteDirect Link to This Post

MadProfessor8138

351 posts
Member since May 2015
Since we are talking about carbon and what not.....might as well have some fun and see if you guys can answer this question.
What are the 3 reasons that engines have exhaust's on them?
The old timers should know this fairly well......youngsters,probably not so much...lol
IP: Logged
Blacktree
Member
Posts: 20770
From: Central Florida
Registered: Dec 2001


Feedback score:    (12)
Leave feedback





Total ratings: 350
Rate this member

Report this Post09-06-2015 02:45 PM Click Here to See the Profile for BlacktreeClick Here to visit Blacktree's HomePageSend a Private Message to BlacktreeEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by bmwguru: We pull the intakes and "walnut blast" most direct injected engines. The other stuff like seafoam makes little difference on those. The first walnut blast tool we had was an aftermarket made one from ECS Tuning. It was so frustrating to deal with because it was always temperamental. I bought the factory tool from BMW and it was worth every cent.

I bet you love cleaning the intakes on older TDI engines.
IP: Logged
bmwguru
Member
Posts: 4692
From: Howell, NJ USA
Registered: Sep 2006


Feedback score:    (38)
Leave feedback





Total ratings: 131
Rate this member

Report this Post09-07-2015 04:54 AM Click Here to See the Profile for bmwguruClick Here to visit bmwguru's HomePageSend a Private Message to bmwguruEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Blacktree:

I bet you love cleaning the intakes on older TDI engines.


Those intakes got to be very inexpensive, so we just replace them now.

These are the valves of a 2008 Volkswagen 2.0t with 50,000 miles on it. I took both of these pictures myself.



This is after walnut blasting the valves.



We walnut blast about 1-2 cars a day. Using the original ECS Tuning tool, it would take about 30-40 minutes per cylinder after the intake was off. It kept clogging and would take two people to do it. Using the factory BMW tool takes about 3 minutes per cylinder and there is absolutely no mess and takes one person to operate it. The price difference was more than $1000 though.

As for Fieros....they will never see this much carbon buildup, so there shouldn't be a worry. The first generation direct injected engines would get so bad that they would misfire and have a noticeable power loss.

Dave
IP: Logged

next newest topic | next oldest topic

All times are ET (US)

Post New Topic  Post A Reply
Hop to:

Contact Us | Back To Main Page

Advertizing on PFF | Fiero Parts Vendors
PFF Merchandise | Fiero Gallery
Real-Time Chat | Fiero Related Auctions on eBay



Copyright (c) 1999, C. Pennock