96 c4 rough idle
Thread Starter
Cruising
Joined: Nov 2014
Posts: 12
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96 c4 rough idle
I have a 96 lt1 that has a rough idle in park and drive. I have taken it to multiple shops and everyone is scratching their heads. It has had new oem plugs and wires, fuel filter, pressurized fuel cleaning service, compression and vac lines checked, valve springs checked. Fuel injectors swapped from one position to the other, and the code did not changeto another cylinder. Only thing it shows in diagnostics is a misfire in cylinder 3. This was the case even before all the work was done. Timing and spark are reading correctly according to the mechanic.
Any ideas? Optispark?
Any ideas? Optispark?
Race Director
Joined: Mar 2015
Posts: 15,926
Likes: 579
The spark wires must click twice good chance you have two swaped. Get a noid light and make sure #3 is getting power might just be a nibbled injector wire.
Last edited by antfarmer2; Aug 15, 2015 at 02:11 PM.
