My 1988 s10 4.3 T.B.I. blazer is very hard to cold start. Dies for 10 minutes at least. When warmed up runs fine and restarts fine. Any suggestion to a possible solution would be appreciated. My son replaced the electronic pick up unit in the distributer because of hard starting hot and shortly after this new problem appeared. I suspect it could be throttle position sensor or ecu but really don't have a clue. My son uses this vehicle to commute to welding school so I really need it right.
Thanks
Jack