c4 won't start
Thread Starter
Cruising
Joined: Jan 2011
Posts: 14
Likes: 0
From: Fayetteville nc
c4 won't start
need help, I have a 1993 c4 that after driving for about 15 min it won't start. It will turn over strong but won't start until about 15-20 min later.
Do anyone have a clue what could be wrong?
Do anyone have a clue what could be wrong?
Race Director
Joined: Jun 1999
Posts: 14,924
Likes: 9
From: Merritt Ils Fl
[QUOTE=rinosaur;1576431841]It would seem to be a heatsoaked starter, ignition coil, ignition control module, or the optispark. I'm sure more knowledgeable people will comment in a few hours.[/QUOTE
Heatsoak is very common but it is not your problem is the starter turns the engine. I would look elsewhere.
Heatsoak is very common but it is not your problem is the starter turns the engine. I would look elsewhere.
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
Engines require spark, fuel, air, and compression in order to start and continue to run. When it won't start, THAT is when you do some diagnostic tests to find out what is missing to prevent your engine from starting. Use a timing light to see if you have spark. Use a noid light to see if your injectors are being pulsed. Use a fuel pressure gauge to see if you have fuel pressure (35-42 psi) and if the pressure holds up for at least 1/2 hr after the ign is off. Spray starting fluid into the intake and see if the engine starts and if it does you have a fuel delivery problem. Last, measure compression.
