Question about 1995 Chevrolet Impala
I replace the timingchain,distribter,coil and wires with sparkplugs.When i try to start it ,it turn over for awhile then it backfire ******* the passenger side
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Posted on Jan 02, 2017
SOURCE: 1993 blazer 4x4
I assume you have the 4.3 vortec. If so, check to make sure you have the spark plug wires in the right position on the distributor cap. firing order is 1,2,3,4,5,6. right side of engine is 1 front 3 middle and 5 rear. Left side of engine is 2 front, 4 middle, and 6 rear. On the distributor cap # 1 should be toward front of engine and work counter clockwise from there. Hope this is helpful. KS
Posted on Mar 20, 2009
Sounds like the fuel is draining back towards the fuel tank, which is the reason for extended cranking till fuel reaches injectors. My guess would be the fuel pump in the fuel tank. It contains a REVERSE FLOW VALVE, which SHOULD prevent this. A visible way to check would to place a manual fuel pressure gauge on the fuel rail valve. After shutting the engine off note the degree of pressure drop, if any. Hope this helps
Posted on May 09, 2009
SOURCE: 1997 CAMARO TURNS OVER BUTVWONT
the icm, coil, and crank sensor all read off the opti. Chances are you have a bad optispark (distributor). I just went thru the same issue and found it to be the problem.
check your fuel pressure as well, you may have anissue with your fuel pump and or relay
Posted on Oct 19, 2010
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