rough idle on 95 s10 blazer 4.3 vortec vin w
Will a bad knock sensor cause
rough idle & black smoke come
out the tail pipe if u rib up the
engine it dont have mass air flow
sensor r crankshaft sensor it runs
good when I first crank it after it
warms up it starts rough idle
Check fuel pressure and leak down to rule out the fuel system. Is the check engine light on?
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