I have a couple of problems. One is since I installed the Mach 4s I have to spin the engine some before it will start. Doesn't matter if the engine is cold or hot. Always used to start instantly. The other change lately is when going from Park to drive or from reverse to drive the engine stalls. I figure this may be an electrical problem on the transmission. Has not done this since I installed the DTT two years ago. What ya'll think?

Regards,
Gene007

 

I don't know why installing the Mach 4s would have anything to do with your engine. Did you check to make sure that all of the fitting are tight? Might be loosing the prime.

 

I'm betting your losing prime. If it happened right after the install then you are probably leaking a little bit of fuel some where and losing your prime.

 

check the high-pressure tubes from the vp to the injectors @ the head. I bet they're loose or leaking. You'll smell diesel, you can take some paper-towel or shop rag and rip a bit off and wrap it around the nut / line and run for awhile, it it's yellow it's leaking. That's how I knew I was leaking from 5 lines @ the head.

it makes for very hard starts.