Having problems with your 1991 GMC S-15 Jimmy ?

1991 4.3L GMC Jimmy S-15 will not start. Turns over, but does not start. Replace spark plugs and wires, ignition coil, module checked good. The plugs are gettin fire but not sending it to the motor?

Posted / edited by AnonymousUser on : 18-11-2019

Answers :

You need 3 things.
\015\012Compression
\015\012Good hot blue spark to all plugs.
\015\012Good gasoline and proper fuel pressure. 13-13.5 lbs on your TBI
\015\012If you have all 3 then move on to injector pulse to both injectors.

Keep me posted and recheck your spark plug wire to make sure they are not crossed. firing order 1-2-3-4-5-6 cylinder # passenger side 1-3-5 front to back. cylinder # drivers side 2-4-6 front to back
distributor #1 is located at the 7 o"clock and rotates clock wise so next distributor post on the right working clock wise is #2. Good luck and hope this helps.
Repair Help & Product Troubleshooting for 1991 GMC S-15 Jimmy

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