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No start warm

Tiny
DUST
  • MEMBER
  • GMC C1500
Have a 92 k1500 - 4.3l 5 speed - 210000 miles - replaced a failed fuel pump - ran great for a week then no start - fuel pump does work - had week spark replaced coil - will not show any spark after its ran up to temp - fuses and connections look good - cap, rotor, plugs and wires are new. Will start after it sits over nite but no restart after its warm. Up to the fuel pump relacement ran fine but did have a jumpy tach. Any ideas where to begin? Thanks dust
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Thursday, April 20th, 2006 AT 8:04 PM

1 Reply

Tiny
LOSONE
  • MECHANIC
  • 1,616 POSTS
It sounds like you have a very tired 4.3 that looses compression when hot and won't start. The 4.3 is a 350 with two missing cyls and that is a classic 350 problem.
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Friday, April 21st, 2006 AT 12:40 PM

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