SOURCE: how to replace spark plugs on 2005 chevy silverado
spark plug wrench and alot of patients with the very back ones hard to get to
SOURCE: 1997 Chevy Silverado 1500 4x4 will not start
Have you checked the fuel pressure? Fuel pumps are a common failure item on those trucks. Pick up a cheap fuel pressure gauge and hook it up to the shrader valve on the fuel rail. With the ignition on and you should have 55-65psi. Even if it's a few psi below spec it could stop the engine from firing.Once you determine the fuel pressure isn't adequate make sure you have a
good power and ground at the fuel pump. If that checks out, time for a new fuel pump module. I recommend only replacing it with an AC delco unit, I've heard bad stories about aftermarket replacements.
You could also spray some carb cleaner or starting fluid in the throttle body and crank the engine over. If it runs for a few seconds after spraying starting fluid in you know you have a fuel delivery problem.
SOURCE: spark plug gap
oen he hood of the truck there should be a tag on the front of the truck! the tag says catalyst ! engine info ! but the gap should be 060
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