Hi everyone! I am having to replace the injectors in my 1989 C4, and am asking if anyone could recommend a good set of replacements for this 'Vette. I just want to go back with a stock replacement so I don't have to do any mods to the ECM. Any tips or suggestions?

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Contact Jon at Fuel Injector Connection, he'll hook you up.

Thanks jimmymack

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I bought a set of Acell infectors for my '85 when I replaced them. So far, no problems.

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Joel Adams  
My Link

    
(click for Texas-sized view!)             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

I installed a set from FIC too this spring. Just stock rate at 22lb Bosch III. Working great!

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I also bought a set of Bosch flow matched injectors from Jon at FIC. Dealer wanted $1600 for 8 while Jon provided rebuilt injectors at a much more reasonable cost. 

Thanks for all the tips, guys. I got hooked up on a set of Bosch III injectors from FIC, and got them installed, and now my car starts, but only runs for about 3 or 4 seconds, then stops. I guess I have another problem. Does anyone else have any experience with this one? All help is appreciated.

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Just an update for anyone who might still be following this post. I replaced the injectors, changed the oil and filter, replaced the spark plugs, cleared the ECM, and got the car to start with a great deal of difficulty. After I drove it fir a short distance, it lost power and stalled. When I tried to start it, it backfired through the intake, and caught the air filter on fire, and wouldn't start any more after that. After I had it hauled back home, I checked the cam and distributor timing and all seems to be well there. Now I really don't know where to go next. I have a mechanic who is going to come out and try to diagnose it as soon as the weather here permits. Thanks guys.


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Oh yeah, also ICM tested good.

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Ya really gotta just start with the basics, at this point. Check for fuel, air, and spark...all at the right time, in the right amounts. Hard starting, dying after start, and stalling, kinda points to either fuel or ignition.

How was the ignition module tested? Was it hot or cold when tested? Those modules can test fine cold, but fail miserably when they start warming up. It may start and get you down the road, then flake out...you never know.

Has anyone checked/tested the pole piece/pick up coil in the distributor? The wiring to that little dude is pretty fragile, and it will deteriorate just because of where it is. Moving the wiring around to remove/replace the ignition module can cause problems for the pick-up wiring....check that very carefully for ANYthing that looks abnormal.

Have you checked the actual fuel pressure, both before and after starting?



(dam spelchek!)


|UPDATED|12/17/2012 11:03:54 AM (AZT)|/UPDATED|


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Joel Adams  
My Link

    
(click for Texas-sized view!)             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

Yep, ^^^

The backfire in the intake, and  hard-start seems like fuel pressure (pump). How DIY'rs can own and work on an EFI equipped engine without owning a fuel pressure gauge is beyond my comprehension. It's the second thing I check on an EFIU no-start. (The first thing is listening for the pump to run at key-on).


I purchased a very clean Syclone this past weekend that will sell in the 10K range for $4,500 because the guy gave up on it after three years of trying to get it to run after a fuel pump change. I knew what was wrong with it before I even went to see it. I had it running 30 minutes after getting it 'home'. The gauge said 9psi, and it has to be 40psi to start.  He was given a TBI low pressure pump instead of the hi-pressure PFI pump. The VIN for a Syclone is the same as a TBI engine. If a FLAPS uses the VIN to select the pump for a Syclone, you get the wrong one. If the guy had checked the fuel pressure (knowing what to look for), he would have been driving his truck the past 3 years, and not 'given it away' out of frustration.

Anyone want to buy a clean Syclone?


|UPDATED|12/21/2012 9:18:09 AM (AZT)|/UPDATED|