Hey everyone,

Good news = I got my LT1/3rd gen fired up this morning.
Bad news = Its not running well at all

-It wont idle. While starting, the engine will catch for a split second, but then dies
-If I hold the gas on a little, it will run, but extremely rough & smoke comes out the exhaust. And the exhaust smells like fuel.


I am guessing its an ignition problem, but I dont know where to start. Here are some details...

96 LT1
PCMforLess tune
New GM opti w/ MSD cap & rotor
45-50psi of fuel
I dont have a history with the Coil & Coil control module


Any suggestions?

 

OK I got it. Ended up being a combonation of two things...

MAF & MAP

One of the things I had tried earlier was disconnecting the MAF to rule it out. Then car wouldnt even start with the MAF unplugged. So I replaced the MAP sensor and then tried disconnecting the MAF again... Whala!! The car is running on Speed Density right now... BUT IT RUNS!!! Im am so pumped. I cant wait to get the accessories hooked up so I can take it out for a spin!!

P.S. Open headers are great!

 

good to hear you got it figured out. I was going to recommend checking the MAF as your issue sounds similar to what happened to mine a few years ago when one of the MAF signal wires broke