Missfire Cylinder 4 Hhhheeellppp Bad Idle - SRT Forums

BOOSTEDSRT2004 · 11-08-2004, 12:43 PM

hI , GUYS WELL I have a problem with my car , i have an safc 2, new msd wires, plugs, stage 2 injectors and walboro fuel pump upgrade, 2.5 turboback , AGP wastegate and my car at idle feels like it missfire and it does i am getting a code 304 which is missfire in cylinder #4 but i dont understand where this is coming from please help me.

NIVO88T · 11-08-2004, 12:46 PM

check your plugs first.

how much boost are you running? stage 2 injectors, pump and safc2 for an agp wga and exhaust as mods?

anyways, check your plug gaps, how much boost are you running?

bodizapha13 · 11-08-2004, 12:54 PM

If it is the plug and you want to give the dealership a try there is a TSB out about the number 4 plug and wire. They will replace all 4 plugs and put on new wires under the TSB. Let me know if you want a link to it.

BOOSTEDSRT2004 · 11-08-2004, 01:09 PM

im spiking about 20 dropping to 15-16 to redline, my gap right now is .50 and they are brand new plugs.

BOOSTEDSRT2004 · 11-08-2004, 01:10 PM

and also i went to the dealer for the tps sensor and was fixed about 2 months ago.

NIVO88T · 11-08-2004, 01:10 PM

Quote: Originally Posted by BOOSTEDSRT2004

im spiking about 20 dropping to 15-16 to redline, my gap right now is .50 and they are brand new plugs.

drop your gaps down to .038" and start from there...

Dale Seeley · 11-08-2004, 01:11 PM

The gap is high, as is probably the attempted boost.

After regapping the plugs to what Nivo will recommend (.035 probably), you'll still be saddled with the PCM trying to save your engine from your attempts to blow it up....

NeonDan · 11-08-2004, 01:12 PM

check the coil....

BOOSTEDSRT2004 · 11-08-2004, 01:15 PM

ok i had the gap at .35 and it still did it, also i tried my friends srt coil and it was the same thing. ?

NIVO88T · 11-08-2004, 01:16 PM

now it's obvious to check the wires....

gliv · 11-08-2004, 01:18 PM

Quote: Originally Posted by NeonDan

check the coil....

What he said after regap of plug if problem still exists.

gliv · 11-08-2004, 01:20 PM

Are your plug wires in the correct order? Hey it could happen.

BOOSTEDSRT2004 · 11-08-2004, 01:20 PM

teh problem after regapping he plugs still exists and i have new wires with the new plugs i bought them the same day. it did it with the old wires and it does it with the new ones too.

NIVO88T · 11-08-2004, 01:23 PM

check your safc settings. what are they?

BOOSTEDSRT2004 · 11-08-2004, 01:29 PM

im running a pressure sensor set up with the in 05 and the out 05 does anyone know the setting for the SAFC2 for the srt ??