Question about 1997 GMC Sierra K2500
Lately it has been hard to start when it sits for a while. now it won't start at all.it has fire to the plugs and 40 psi fuel pressure.
40 psi on a 5.7 vortec isn't enough. It's way too low. You need between 55 and 65 psi to run right. To be certain, you could spray starter fluid into the intake and if it starts, fuel is your problem and replace the pump or filter. A lot of times its the filter so keep that in mind too.
Posted on Apr 05, 2012
I would check the cap and rotor if it has spark and 40 lbs of fuel pressure if cap and rotor are ok check for injector pulse thats the only other thing it can be
Posted on Nov 01, 2008
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Posted on Jan 02, 2017
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