Thread: 3 and 4 not firing

So I am hoping it is not injectors...

1 and 2 fire 3 and 4 do not


Alternator went out and car died on the side of the road.
Replaced and fired it up and have a bad miss fire

Cleaned maf
replaced cap and rotor
cleaned tb
reset ecu
Cleaned grounds
tried another set of spark plug wires
Dumped some seafoam in the tank and let it rough idle 30 mins

Still missing on 3 and 4
3 and 4 are sparking ut no fire.

I am thiinking injectors but what's the chance alty dies and 2 injectors lock at the same time?

did you check the spark plugs?


to check the injectors, unbolt the fuel rail and take a rag or some paper towels or something an slip it between the injectors an engine, then goto start the engine an let it turn over 2-3 times.. you should see 4 little dots on the paper towel or whatever you used.. they should be evenly sized an look close to the same..

Sorry forgot to add that replaced all 4

are you getting injector pulse?

How do I tell?

How do I tell?

diode kit... or easier way. take out a 194 bulb from your park light... peal the wires straight and plug them into your injector clip... crank the car and if they bulb blinks that means you're getting power/pulse to the injectors...

was sending signal bulb flashed. Pulled injectors and placed them on the shop towel on VC and cranked it.......and the shop towel burst into flames. put the rail back in and the car fires up no miss. set it on fire to fix it :P

haha what the F? that tells me theres something up.. maybe with the sparkplug wires? im thinkin spark jumped some how.. i've used that trick many times now an have never had the towel burst into flames lol...

and what the hell? now it runs better? haha

didn't expect that fix... but it works lol