14 replies to this topic

[rowlys_evo3]

hey,
i have a gsr with a evo 3 4g63t and when its cold it pops/miss's
but seems to get better when its warm
also hesatant when revving and sounds like a wrx

if anyone could help
thanks

[clone]

might have a bad lead / spark plug or crap in your injector.

Start with spark inconsistancy since it wont cost you anything , dc a lead and see if it makes a difference or get a multimeter and measure the OHMs or just check for coninuity.

[Rockabilly]

You might have a suss fuel filter that clears after a while. I'd say the popping is low fuel presure until the filter clears. A wideband a/f gauge is your best friend.
I think I've seen you between Catalina & Batehaven. I have rellos done there.
Cheers !

[rowlys_evo3]

You might have a suss fuel filter that clears after a while. I'd say the popping is low fuel presure until the filter clears. A wideband a/f gauge is your best friend.
I think I've seen you between Catalina & Batehaven. I have rellos done there.
Cheers !

cool another couple of things i can check... thanks for that muchly appreciated
and yeh i live in batehaven
i have a turbo smart fpr with a guage on the front of it might hook it up to see what its says what would be a good preesure to be running??

[EvoMyk]

Sounds like my car after I got it back from getting resprayed. Turned out I had an oil leak from the oil cap and oil got in the holes where the spark plugs are so pulled them all out gave them a good clean and used an air blower to blow out the excess oil/water and that fixed it.

[Evo-00x]

When was the last time you checked/changed the spark plugs and leads and had a tune?
Also might be worth buying a new O2 sensor and changing the one you currently have. A lot of guy's engines are still running around with the OEM oxygen sensors still in place after all this time.

[rowlys_evo3]

When was the last time you checked/changed the spark plugs and leads and had a tune?
Also might be worth buying a new O2 sensor and changing the one you currently have. A lot of guy's engines are still running around with the OEM oxygen sensors still in place after all this time.

never had a tune, trying to get a chip made from meek... oxygen sensors??? is that the afm or the one that is in the exhaust?? the one in the exhaust is factory...
ill give the spark plugs a go aswell gotta try everything it is really annoying me its soooo much fun to drive when its running properly
i did change the leads but they were second hand and the plugs are brand new maybe 1000k's on them but they are the bpr6's not 7's dont know weather that makes a difference??
i wanted to buy a set of coil on plug
maybe i should

thankyou for all your help

[evo-gsr]

O2 sensor is in the dump pipe...

I would be checking leads and ignitor/coil pack.

BPR7ES are the correct plugs this may have something to do with your problem also?

Edited by jamo-gsr, 11 January 2012 - 06:02 AM.

[rowlys_evo3]

so,
put new leads on
changed the coil pack
still no good

[evo-gsr]

What about the plugs??

[rowlys_evo3]

3 of the plugs are black the other is white.. im going to pull the injectors out and clean them up and put them back in and see if thats it.. looks like a dud injector??
maybe

[EV0300]

3 of the plugs are black the other is white.. im going to pull the injectors out and clean them up and put them back in and see if thats it.. looks like a dud injector??
maybe

check your injectors with a multimeter? might be one of the injectors kicked it.

[evo-gsr]

They are the wrong plugs...Ive already posted that. ...Check the injectors and change the plugs and then come back to us.

[jack be nimble]

what plug gap have you got too? i think they come as 1.1mm gap, you need to gap them down to 0.9mm.

disconnect plugs or injectors one at a time to find the dead cylinder.

compression test, wet and dry results please

[rowlys_evo3]

dud injector... no mores pops