Can bad fuel injectors or fuel pressure reg. make truck idle a little off, but be...

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shawnv

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...fine after take off? My 03 yukon has had alot of work done lately. I started fixing everythng when gf brought it hme with check engine light on. When I drive truck it runs good but at a complete stop it has a slight miss. I have changed plugs, wires, o2 sensor, catalytic con, changed oil, motor flush, gas treatments, cleaned mass air flo sensor, good compression, good fuel pressure, intake cleaned, all coil packs are good. The truck keeps showing multiple misfire on computer. I am burning extra gas
Ok please read before u answer yes the truck has been diagnosed multiple misfire
all the other problems I read on my obd scanner I fixed
I also ran a can of seafoam through a vacuum line in the intake which 2 gm and a dodge mech suggested. These guys are my friends and good at what they do and they are baffled
 
Try a fuel injection service / cleaning before you start tearing the engine apart to do injectors. I've found a good service cleaning fixes most rough idles and minor misfires
 
Did you get the codes read, since you stated the check engine light was on? So, basically your wasting money till you get the problem diagnosed first.

Multiple misfires could mean the crank sensor may be screwed up somehow too.
 
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