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1998 Chevy 350 misfire

Have a 198 Chevy 4x4 with 350 and automatic. Snap On Solus unit shows code

300 - random missfires on cylinders 3,5 & 7. Replaced plugs wires and have had fuel injection cleaning performed by dealer - motor is now periodically hard to start - but not always - and blubbers just above idle as if it is running rich? The missfires went away after the cleaning but the hard starting and blubbering leading to cold stalling are not the answer - please help.
Reply to
jclockard
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Reply to
Shep

shows

Have you checked the fuel pressure and the filter?

Reply to
SnoMan

Both Shep and SnoMan (as well as dealer from the sounds of it) ignored the fact that the misses are all on the same bank of the engine, indicating that it is not a problem with the entire system, just on that bank of the engine.

What did the plugs look like from that bank of the engine?

Doc

Reply to
"Doc"

Doc, p0300 is random misfire this does not indicate any cylinder, that would be 0305 or 0307, based on the 0300 I replied as stated, he never said he got

Reply to
Shep

So basically you don't know what cylinder misfiring. What would cause a cylinder still misfire if you have changed Wires, Plugs, Coil, Fuel Pum, Distrubutor Cap and Air filter?

Thanks

ProTurbo

1998 Chevy Truck V6
Reply to
Dan C

So basically you don't know what cylinder misfiring. What would cause a cylinder still misfire if you have changed Wires, Plugs, Coil, Fuel Pum, Distributor Cap and Air filter?

Thanks

ProTurbo

1998 Chevy Truck V6
Reply to
Dan C

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