Diagnostic Questions
Thread Starter
Team Owner
Joined: Feb 2006
Posts: 24,460
Likes: 7
From: sw Ohio
Since it ran fine for 2 weeks prior to the cold start valve fix, I'd look very closely at that specific area and the components that you worked with while repairing the cold start valve (CSV). Is it possible that an injector connector near the CSV was not pushed down onto the injector completely and has come loose? Are there any wires or hoses in that area that might have been incorrectly re-attached or are now loose? Could you have shorted one of the wires of the injector harness or nearby harnesses? Have you double checked that none of the spark plug wires are loose at the distributor or at the spark plug?
edcmat-l1, I have been seriously considering shelling out the big bucks and taking it to a speed shop that specializes in TPI, LT1, and LS1 engines/tuning. Or at least a good mechanic, either way wont be cheap around here.
I dont think that the mods that i've done are enough to require a tune. My main goal with the heads was to get something that fixed my messed up valves. My original heads were screwed so I figured I might as well get new ones. I didnt get anything too wild, biggest change was going from 76cc chambers to 70cc chambers, but it still runs great on 87 with no knock.
I do believe i've received just about all the help anyone can possibly give me without actually working on my car for me. Thank you all very much for your input and hopefully it'll be back on the road soon.
Safety Car
Joined: Jan 2006
Posts: 3,566
Likes: 4
From: Mt Laurel NJ
St. Jude Donor '06-'07
The IAC is less than a year old, I checked it and its clean. I also tested it according to the FSM using a multimeter. I have a new fuel pump and filter. The distributor and related components are all good or have been replaced. I have not ohmed my injectors and dont feel the need to as my fuel pressure is just fine, no leaking and they're all working.
The point is, an injector may not leak, but can still be bad.
Good luck
