Question about 1996 Chevrolet Blazer
Very common problem the fuel pressure regulator under the plenum is leaking and causes a rich running condition on start ups and if bad enough can cause it at idle all the time
Posted on May 02, 2015
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Posted on Jan 02, 2017
SOURCE: 93' 4.3 chev runs rough at times
Have someone turn the key on while you watch the injectors. If any gas leaks out of the injectors, without cranking on it) replace the o'rings around the injectors.
Posted on Mar 12, 2009
change plug and wire if its been a while most cars have 90000 miles platinum plugs in them.but the wires wear before plugs.so change plugs and wires.+clean fuel injectors .change fuel filter and air filter.if car still run rough your idling to low.have idling check .
Posted on Jun 06, 2009
SOURCE: Rough idle
I took mine in to change the plugs and they said there are four O2 sensors in the fuel mixture system and two were bad. I didn't replace them since they were a little pricey ($500 to replace both) and I have 103,000 on the car. Has very similar roughness and occasional oscillations, but no stalling. Hope this helps.
Posted on Aug 25, 2008
It could be the filter. Has the fuel been changed after storage? I would also thing the Carburetor or the fuel injectors might need to be cleaned.
Posted on Dec 19, 2008
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