Mishawaka

Ordered a set of rebuilt injectors from FIC and installed them Friday, now the 92 takes numerous turns of the engine to get started. Never had this problem and I think its because they sold me 22lb instead of 24lb. The first time I called them I told them I heard I needed to go with the 24s and the guy agreed but the second time they said I needed the 22s after I mentioned the 24s. I figured maybe they make them how they are supposed to be but call them 22s. Whats everyone think? Ive never had a starting problem before now, is there anything else that I may have overlooked? I reset the battery and let it idle per instructions.

antfarmer2

I think you need to call them and talk to Jon

Mishawaka

Only Jon? You think I talked to wrong person and they sent me the wrong ones?

antfarmer2

No he has a good reputation in the forum. I believe you have the right ones. I think they went to 24# in 94. did you drive it 30 plus miles to let it relearn?

Mishawaka

Will call Monday then, hopefully it's just something minor. Thanks!

Dr.Dumas

I put rebuilt #22 lb, ones from Zip in my 92 and everythings fine.

PatternDayTrader

If it runs properly after its started then it probably not an injector problem.

1993C4LT1

I agree. But Jon says 24lb for 93's

Mishawaka

It runs as it did before the injectors, it just takes numerous turns of the motor for it to start running now. Never had that issue before I replaced the injectors.

PatternDayTrader

Its certainly not impossible that the injectors are somehow related to the long crank problem. I just wouldn't skip any of the regular diagnostic steps and assume that the injectors are at fault even though it has all happened just after they were replaced. I mean they are newly remanufactured right ? I would make the assumption they are ok, and you have another problem brewing.

1993C4LT1

Check your fuel pressure. Key on, should be at 42 PSI.

Mishawaka

Nothing else done but the injectors. I replaced the pellets in the passenger headlight motor last night also but certainly not related.

PatternDayTrader

Well its sounds like your mind is made up, so it must be impossible that something else is the problem.

Mishawaka

Certainly not, but I have read here and there about injector size and with what I have read it casts doubt. I just walked down to the garage and did a fuel pressure test as 1993C4LT1 suggested and it IS reading 41psi but what is weird is that when I first turned the key to the ON position it read about 35psi and after I turned it off then back on it read 41psi. Now I checked the fuel pressure just recently and it read 42-43 as always when checked before but all of a sudden it reads 41psi and flaky so coincidence I guess but strange. There anyway air could be in the rails and causing a problem? I will call FIC and talk to Jon Monday and will probably replace the fuel pump regardless.

antfarmer2

Have you taken it for a drive yet?

Mishawaka

Yes, a few times. Drives the same as before I replaced the injectors.

antfarmer2

Pull the vacuum line of the fpr and smell for fuel. How long does it hold pressure after you key it without starting?

Mishawaka

35psi after 5 minutes, 20psi after 15 minutes and 0psi after 25 minutes.
My sniffer isn't as good as it used to be, I smelled a little maybe but that could be the errant gas spilled while connecting the the tester. I figured Id see if it would hold a vacuum but it wouldn't, am I correct to think it should hold vacuum?

Cliff Harris

No. Corvettes have a recirculating fuel system and there is no way for air to get into the rails (unless you run on an empty tank...;-)

PatternDayTrader

The weirdness with the pressure readings after you key on doesn't really sound all that unusual to me.