Cornhusker

I have recently found one of my injectors is bad and the others may not be far from it. Thus, I figured I should replace the whole set. What Brand is suggested? Should I stay close to or at stock injectors? Anything else to do while tearing it apart? I was thinking of an adjustable fuel pressure regulator.

The vette is an 89 coupe, manual, stock except for cat back and k&n Filter, however I do autocross and track day it.


Recent findings on vette:

Fuel injector ohms reading:
(All the readings are from front to back)
Driver side: 13.7, 16.0, 16.1, 13.2.
Passenger side: 16.4, 13.6, 13.8, 3.8
Bad injector @ 3.8 !

[U][B]Fuel pressure gauge readings:
Key on & not started: 43lbs
Run at idle: 38-39lbs
Run at idle & pull vacuum line off fuel pressure regulator: 46lbs
Running & rpm held steady at 2,000 & then 3,000rpm: 38lbs
Running & rev engine: jumps up 8lbs or so.
Wide open throttle: not tested yet.



Leak down from key on (prior to starting):
1st test:
0 min - 43lbs
3 min - 38.5lbs
5 min - 37lbs
8 min - 36lbs
10 min - 35lbs
15 min - 34lbs
2nd test:
0 min - 43lbs
3 min - 42lbs
5 min - 40.5lbs
8 min - 39lbs
10 min - 38.5lbs
15 min - 37lbs

corvetteronw

The Fuel Injector Connection has a great reputation here on the Forum. Great prices and excellent service.
This would be a good time to replace the old O rings in your fuel rail too.
http://fuelinjectorconnection.com/sh...hp?groupid=101

John A. Marker

and stay with the stock injector. No need to go to anything else with the current configuration of your car.

JimZRyd

X3! Great company and Great product!

Jim

HAD2HAV2

Cornhusker, Everyone is right. fuelinjectorconnection.com are the folks to deal with. You can get the complete kit that includes O-rings and fuel pressure reg. gaskets. The Bosh injectors are easier to install than stock. No c-clips.
What else to replace. EGR and all the vacuum hoses that run under the plenum.

Cliff Harris

I bought my injectors from FIC a couple of years ago and they came with the O-rings. I see on their site that they are now listing the O-rings separately, so it looks like you have to specifically order them, as they don't seem to be included any more.

QCVette

One more for FIC.

I bought a set and found one injector that was stuck open. Even though it was unclear whether I may have gotten some dirt into it during the swap and caused the problem, FIC replaced it no questions asked.

Great company to work with.

samsonb

I went with the 22# FIC Bosch III injectors. And it ran super lean when datalogging. Found some recommending the 24# instead. And put in the 24# FIC Bosch III injectors and the BLM's were right in spec according to the FSM.

Old Ben

Another satisfied FIC customer.