I was thinking that possibly the carb was just to big. 600cfm.
I'LL check for vacuum leaks but i dont think there is one.. but maybe..
Also ill pull the carb see if the gasket is torn.. or do you mean inside the carb as well??
I dont understand the temperature related part ( please explain)
And by pulling one plug and hitting the key and it sparks does that mean its not the module??
Or do i have to go one plug at a time ??
I really appreciate the help guys thx.
1. 600cfm is not too big.
2. Torn or leaky carb base gasket... maybe.
Inside the carb... unlikely, but possible.
3. Temp related vacuum leaks...
Hoses can be cracked and not leak until warmed up. (expansion)
Hot/Cold Expansion/Contraction of almost anything... including rubber hoses.
Example; PCV system leaks that don't show up until warm/hot. Bad PCV valve.
Also gaskets can leak if things are not properly torqued, and the leak will change depending on temp.
Intake gaskets, intake bolt torque are critical.
4. Ignition module...
Just because it makes spark cranking, does not mean it is good at all times. (hot/cold)
Ignition modules can go bad and work intermittently.
Usually heat related, they warm up when in use.
That's why the are built into an aluminum housing, to dissipate the heat.
The aluminum housing acts as a heat sink.
Run the car for 1/2 an hour and put your hand on the module, it will be warm,
even if mounted in an area that does not get warm from engine heat.
One way to test...
Start engine and put a 100 watt light bulb (LIT-UP) on the module to really get it hot.
Observe spark and/or if engine starts to run poorly or dies.
That should keep you busy for a while...