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How much can an injector leak and still be "okay"? by ryan.hess
Started on: 11-21-2004 10:26 PM
Replies: 17
Last post by: Kekipi on 01-23-2005 02:52 AM
ryan.hess
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Report this Post11-21-2004 10:26 PM Click Here to See the Profile for ryan.hessSend a Private Message to ryan.hessDirect Link to This Post
I'm guessing the answer is close to "none" I pulled my rail, and discovered all of my injectors are leaking... albeit very slowly. After pressurizing the fuel rail, and waiting 20 minutes, all of them were "moist". 3 of them were more than moist... one of them had just about enough liquid fuel on the tip to make it drip. Again, this is over 20 minutes time. Is this severe enough to necessitate replacement? Nothing to worry about?
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Report this Post11-21-2004 10:36 PM Click Here to See the Profile for theogreClick Here to visit theogre's HomePageSend a Private Message to theogreDirect Link to This Post
none.

Any leak is a problem. Doesn't matter if it is a seal for injector mounting or internal to the injector. External leaks are a fire hazard and internal leaks will screw up engine performance and fuel economy at the very least.

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Report this Post11-21-2004 10:36 PM Click Here to See the Profile for TaurusThugSend a Private Message to TaurusThugDirect Link to This Post
i dont think i would worry about it but i dont know much about injectors....

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ryan.hess
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Report this Post11-21-2004 10:40 PM Click Here to See the Profile for ryan.hessSend a Private Message to ryan.hessDirect Link to This Post
Yeah, this would be "internal" to the engine/injector... the fuel rail connections were fine.
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ryan.hess
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Report this Post11-21-2004 11:38 PM Click Here to See the Profile for ryan.hessSend a Private Message to ryan.hessDirect Link to This Post

ryan.hess

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Checked again after about an hour, and 6/8 are about ready to drip, the other two are still just "moist". I guess this is unacceptable?
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Report this Post11-21-2004 11:43 PM Click Here to See the Profile for $Rich$Send a Private Message to $Rich$Direct Link to This Post
do you like the thought of fuel spraying about in your engine compartment?
just because its just "moist" now dosent mean it will still be just moist a mile down the road and your car is up in flames

injector o-rings are cheep, and so is an intake gasket set that is needed to replace them, get it taken care of

just my opinion

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ryan.hess
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Report this Post11-21-2004 11:51 PM Click Here to See the Profile for ryan.hessSend a Private Message to ryan.hessDirect Link to This Post
 
quote
Originally posted by $Rich$:
do you like the thought of fuel spraying about in your engine compartment?

again, I emphasize that fuel is *not* leaking from any connections.. but from the injectors themselves.

i.e.. here:

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TaurusThug
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Report this Post11-22-2004 12:17 AM Click Here to See the Profile for TaurusThugSend a Private Message to TaurusThugDirect Link to This Post
so from where fuel would NORMALLY come out??? i still dont see how that little would matter.

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ryan.hess
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Report this Post11-22-2004 12:18 AM Click Here to See the Profile for ryan.hessSend a Private Message to ryan.hessDirect Link to This Post
 
quote
Originally posted by TaurusThug:
so from where fuel would NORMALLY come out???

exactly

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ryan.hess
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Report this Post11-22-2004 06:12 PM Click Here to See the Profile for ryan.hessSend a Private Message to ryan.hessDirect Link to This Post

ryan.hess

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... need a second (fourth?) opinion
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rogergarrison
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Report this Post11-22-2004 06:38 PM Click Here to See the Profile for rogergarrisonSend a Private Message to rogergarrisonDirect Link to This Post
I also say none. It prob wont hurt to 'seep' a little, but it still wont run 'right'. Its like the water pump 'just leaking a little', sure you can drive it, but sooner or later it will become a bigger prob. ie/ you can be diluting oil in the pan with dripping raw fuel.
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Report this Post11-22-2004 07:12 PM Click Here to See the Profile for jronSend a Private Message to jronDirect Link to This Post
I don't think the price of injectors is to high,could even get re-built's. The gas you save would end up paying for them. If you keep them, like they are, you will do more damage inside the motor. Extra gas is never a good thing..


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Report this Post11-22-2004 08:28 PM Click Here to See the Profile for FrugalFieroDirect Link to This Post
If the engine starts right up hot or cold and doesn't have a long crank time when starting, I would say they will still run OK. My fiero had two leaking injectors, but it was a drip about every 10 seconds until the residual fuel pressure dropped. It ran good, but had a long crank time when hot due to the excessive fuel.

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ryan.hess
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Report this Post11-22-2004 08:47 PM Click Here to See the Profile for ryan.hessSend a Private Message to ryan.hessDirect Link to This Post
 
quote
Originally posted by rogergarrison:
ie/ you can be diluting oil in the pan with dripping raw fuel.

Thanks for reminding me... I'll go check that out now.

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Report this Post11-22-2004 09:39 PM Click Here to See the Profile for WhuffoClick Here to visit Whuffo's HomePageSend a Private Message to WhuffoDirect Link to This Post
Good injectors won't leak at all. If the leakage is minor (as you describe) then the car will run OK, but it'll be hard to start sometimes. As long as you've got them out, this would be a great time to replace them. They won't get any better with time, so may as well get it over with...
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FriendGregory
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Report this Post01-23-2005 12:42 AM Click Here to See the Profile for FriendGregorySend a Private Message to FriendGregoryDirect Link to This Post
Does any body know of good national place that would test/repair injectors?
Any superior injectors that would be direct replacements for all of them?
My GT take excessive cranking after sitting for 10 minutes.
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Report this Post01-23-2005 01:00 AM Click Here to See the Profile for $Rich$Send a Private Message to $Rich$Direct Link to This Post
search on google, these are 2 i just found
im sure there is alot more

http://www.rceng.com/service.htm

http://www.cruzinperformance.com/fuelinj.html

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Kekipi
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Report this Post01-23-2005 02:52 AM Click Here to See the Profile for KekipiSend a Private Message to KekipiDirect Link to This Post
Does anyone here know about the heat and pressure it takes to make gasoline? You take crude oil install in a very tall pressure cooker, Heat it hot enough you would burn your skin, The most volatile fuel ie; Nytro goes to the top, below that jet fuel, then formula race car fuel, then nascar fuel, then premium high octaine airplane fuel. at the bottom are Diesel and roofing tar, you know like road stuff. So, when you shut off your fiero after riding it hard the cooling off in the injectors is similar to this prosess.
You can send the injectors to a napa store to clean them profesionly at half the cost of new injectors or go to an injector Guru and get a set of flo tested injectors for about the same as No Auto Parts Available.

[This message has been edited by Kekipi (edited 01-23-2005).]

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