Hey Spidey, 97 S-10 4.3 Random Misfire

[tardis454]

A co-worker has a 97 S-10 4.3L w/P300 random misfire code on cyl #3.
He changed the cap, rotor, plugs, wires, ran injector cleaner through it.
He swapped out cyl 3 plug & wire again, still the same deal...

[Mater]

he swap the plug and wire have him also swap the injector just to see

if it actualy has the individual injectors not sure what 97 used might have that stupid fuel distrabution spider contraption that sat int he intake manifold

[anotheridiot]

I thought P300 didnt specify an individual cylinder, but a bank. Do a compression check on the odd side of the motor. could be a bent exhaust valve. It doesnt effect that particular cylinder, but is 1 or 5 allowing compression through and messing with the charge when #3 fires.

[Bamfster]

Sounds like the poppets are leaking in the injection spider.