1991 350 TPI new rebuild. Will start when cold and trying to set the timing to the 6* at warm temperature. (Unplugged the tan wire to set the base timing). When I have set the timing I turn off the car and replug in the tan wire. Then the car will not start. It is getting spark, fuel, and air as far as I can tell. Engine smells flooded. When I turn motor off it doesn't "diesel" or anything, just turns off like a normal operation. Instantly go to restart and cranks but does not fire up. When I let it sit for an hour or so it will start.

Am I off a tooth on the distributor? It is running a bit rough of course due to me trying to dial it in on the timing. Any input would be greatly appreciated.

 

Have you checked your fuelpressure ?
Maybe you got some leaky injectors and they flood it therefore making it not starting shile hot. So get your fuelpressure checked, idle, some higher rpm ~1800 for some secs to see if the pressure holds then check how long after shutdown the pressure stays..

Then let me know how it turns out.

 

Ok just purchased a FP gauge. It is at 42 psi and holding steady when off. So that should rule out leaky injectors. Vacuum is 17 inches. The car will start up when cold without a hickup, but as soon as it warms up the idle jumps up to 1500 rpm and that is when I cant get it to restart. I am thinking Idle control motor possibly? I took it out and it looks clean. Not gummed up or anything.

I tried out of curiousity what it would do if I WOT while starting and a few cylinders fired but not enough to get it going. So tells me maybe I have an air issue?

I have about 4 hours to kill before I will retry. Any ideas if I can test or try something to see if ICM before I go shell out $50 for one that may not be the issue here.

Thanks

 

Well, bit the bullet and purchased a new ICM. Now the car will not surge to 1500 RPM when warm. It just stays at a constant 1000 RPM. Now im trying to figure out why it wont drop down to around 500 RPM when warm. Slowly im getting issues resolved. I do have a code 15. Going to replace that CTS and hope all comes together.

 

Well it ended up being the CTS. Changed that and now im getting close to being able to drive this car. Thanks King for the input

 

Glad to hear it worked out for you