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?
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.
------------------ The only thing George Orwell got wrong was the year...
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
------------------ Rich AIM: ONE FAST 2M8:98 Black GTP 2 Dr 3.25 pulley,magnuson snout, 72mm TB, RAT PCM, TOG Headers, Borla cat back, 3” to mufflers, No cat, 160 stat, Big brakes, Eibach's, KYB’s PRJ 10mm Wires, autolite 104’s, and more white-- 86se V6 daily driver--Slammed FOR SALE $1,500! Gold--- 86se 355 SBC almost finished 92 325I slammed with basic mods
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11:43 PM
ryan.hess Member
Posts: 20784 From: Orlando, FL Registered: Dec 2002
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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06:38 PM
PFF
System Bot
jron Member
Posts: 298 From: South Lyon, Michigan USA Registered: Dec 2001
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..
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.
------------------ Tim Red 88 Formula Auto 2.8 100K+ Miles
Logic is a systematic method of coming to the wrong conclusion with confidence!
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08:28 PM
ryan.hess Member
Posts: 20784 From: Orlando, FL Registered: Dec 2002
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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09:39 PM
Jan 23rd, 2005
FriendGregory Member
Posts: 4833 From: Palo Alto, CA, USA Registered: Jan 2004
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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12:42 AM
$Rich$ Member
Posts: 14575 From: Sioux Falls SD Registered: Dec 2002
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).]