Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
any access to a fuel pressure gauge ?
we need to see what the fuel pressure is reading key ON engine OFF when it will not fire up first
it should be 41 - 47 psi key ON engine OFF
also are there any codes being set at all ?
if the fuel pressure is reading within spec then you need to go after spark plugs or an ignition module issue
as with the puff of smoke would be a sign of un burned fuel
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