Intermitting Spark

[Addicted2Boost]

This is what i have done to my car. Port and polished head, Hks Vpc, Boost controller set to about 15 psi full exhuast, Je Pistons, no balancing shafts, magna core wires, ngk bpr7es spark plugs , Stock full and Unorthadox pully set. I was driving down the street one day (luckily close to my house), driving normally not beating on my car and it just cuts out. So i try to crank it and it cranks and all i smell is fuel, about a half hour later it cranks right over and wants to run. i messed with some of the plugs to see if any were loose like the power transistor, there's a plug above that , that i had wiggles around. the cam angle sensor plug on the fire wall to see if that was in. They all seemed fine. I haven't driven the car since until i changed the Cam angel sensor , or crank angle sensor , which ever its called coming out of the head. i drive it around for about 5 miles and it cuts out again. The crank/cam angel sensor was out of another car. To tell the truth im not even sure if it was from a turbo dsm. I was wondering do you think i should try buying a new sensor refurbished at like auto zone. Oh yeah that car is a 1990. Maybe find a new power transistor, or buy a new coil pack. Maybe a Sensor on the block which i would think would be a crank sensor but im usually wrong.
Thank you Any help would be great. and Thanks again

 

[viprez586]

disconnect the CAS from the head. Leave the electrical plug on and turn the ignition on.
Spin the CAS, if you hear your spark plugs firing you know its working.

To identify which cylinder is bad, pull the spark plug wire 1 by one to figure out which cylinder isnt getting spark.

 

[Addicted2Boost]

I will have to try that. The only thing is i get spark to all of the cylinders until i drive it for about 5 miles or about an hour then i don't get spark to any cylinders. If i wait it will eventually crank over but then its random on how long i have to drive it before i lose spark again. Thank you VipRez like i said any help is good

 

[viprez586]

Well let me know what happens, also make sure you place the CAS in the right way and with piston #1 at TDC.
I guess you still have a problem check all you wiring and fuses, grounds, make sure everything is tight and good.