1995 GMC Jimmy 95 GMC Jimmy won't start has spark and good

Tiny
LUKESHELTON
  • MEMBER
  • 1995 GMC JIMMY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 138,000 MILES
I've checked fuses, spark, and it's got gas up to the fuel rail turns over just fine won't start
Thursday, January 21st, 2010 AT 1:58 PM

2 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Welcome to the forum, use a gage and check fuel pressure. Some of the national brand autostoes used to loan a fuel pressure gage. You can call and ask. Also, Use a noid lite and check for injector pulse, engine cranking, if no pulse, I'd look for an rpm signal. Where applicable, the spider fuel system is known for problems, there is a shop cleaning procedure for that issue.
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Thursday, January 21st, 2010 AT 2:21 PM
Tiny
OBXAUTOMEDIC
  • MECHANIC
  • 3,711 POSTS
Hi Luke,

Ok, what color is the spark? It should be a Bright Bluish/White, if orange spark is weak.

Check inside the cap look at electrodes if corroded clean up, also clean to rotor, put back together and try starting. If starts replace cap and rotor.

Also would recommend checking and possibly replacing Spark Plugs and Wires. Plugs may have been fuel fouled from trying to start.

.
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Thursday, January 21st, 2010 AT 2:22 PM

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