97 GMC Jimmy/won't start

Tiny
HUSTEAD
  • MEMBER
  • 1997 GMC JIMMY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 140,000 MILES
Been blowing antifreeze up on the motor changed heater core hoses dried the top motor off checked all vacume hoses and will not start don't make alot of money and I try to do all my own repairs please help me a easy solution! Someone at autozone told me it could be a seal I hope its not the seal he's talking about? The Jimmy ran real good before this all happened no problems with anything. Thank You Please Help! Also did clean wires
Tuesday, March 29th, 2011 AT 5:57 PM

4 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Is it still leaking antifreeze? Have to fix that first. Cooling system is full? If it cranks good but won't start, have a helper it while you check for spark at the spark plugs. If you have spark everywhere, use a gage and check fuel pressure.
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Tuesday, March 29th, 2011 AT 6:02 PM
Tiny
HUSTEAD
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  • 3 POSTS
Sparkplugs are new and not sure if antifreeze is still leaking because it won't start all is new from last summer plugs, wires, cap rotor
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Tuesday, March 29th, 2011 AT 6:20 PM
Tiny
HUSTEAD
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  • 3 POSTS
Could it be the fuel filter?
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Tuesday, March 29th, 2011 AT 6:36 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
You have to visually check for spark at the plugs. Take spark plug wire loose, use known good spark plug or spark tester in the boot, ground metal part of tester to metal part of engine. Watch for spark, engine cranking.

You can check coolant level, right? Some of the national brand autostores used to loan out a fuel pressure gage.
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Tuesday, March 29th, 2011 AT 7:23 PM

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