I have a 94 jimmy and I'm not getting any pressure on my number 1 spark plug

Asked by Jul 04, 2016 at 04:37 AM about the 1994 Chevrolet S-10 Blazer

Question type: Maintenance & Repair

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97,105

If you have no compression on number 1 you could have a burnt or stuck valve or a hole in the piston, if you have a cylinder pressurizer you could find out if it is blowing pressure out the valves or Pistons. Once you find that out then you will know if you have to pull the engine or just a head. I have encountered quite a number of V6's that have had piston trouble. So hope for the best but be prepaired for the worst.

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