spark plug problem? or worse?...evo 8 GA
#1
spark plug problem? or worse?...evo 8 GA
Ok. figured i'd start my own thread about this......
back story from april 30th:
two nights ago i had the inkling to take off my intake to see if it is clean. i look in and there is a small pool of oil where the "sleeve" holds the intake pipe onto the turbo. i don't think that's normal so i take a rag and try to sop it up. i don't hit the turbo or anything.
today on the way back from work after 20miles, i get to the exit and it starts sounding rough and conks out at idle. i get it to the gas station and check it out and call my mech - we go over a couple things. check the aem with my laptop and it appears to be getting all sensors, etc. just rough idle and can't rev at all (real rough and shakey). smoke comes out the exhaut that is whiteish when reving. I have another friend call a mech friend of his. he says he had the same turbo on his 4 cyl mustang (pt 61mm) and they have been having seal and/or bearing problems causing oil to get sucked in and cause problems. i take the intake off again and it looks like there is more oil in there and it is moving around alot when i rev and at idle and might sound like it is hitting the bades of the turbo. this doesn't have a ton of miles! what is my next step??? thanks
mike
here is my build for list of equip, etc..: https://www.evolutionm.net/forums/ev...ged-build.html
so first i thought it might be the turbo (which it might be..)
the other week after finally having time to checking the plugs, this is what i found:
the plug on the far left of the engine was "smooshed". not misfired or anything, i don't think (no melting/cracking), but "pushed down".
my aem a/f stopped working allmost right after i got it installed, so i don't know about the a/f.
I put all new plugs in and it worked a lot better, but not "normal". Drove 50 miles during several days and just pulled the problem cyl. plug. it looks fine as of now, but car is still running rough. Engine is a little noisey, but i don't remember what it used to sound like or anything... any thoughts????????
mike
back story from april 30th:
two nights ago i had the inkling to take off my intake to see if it is clean. i look in and there is a small pool of oil where the "sleeve" holds the intake pipe onto the turbo. i don't think that's normal so i take a rag and try to sop it up. i don't hit the turbo or anything.
today on the way back from work after 20miles, i get to the exit and it starts sounding rough and conks out at idle. i get it to the gas station and check it out and call my mech - we go over a couple things. check the aem with my laptop and it appears to be getting all sensors, etc. just rough idle and can't rev at all (real rough and shakey). smoke comes out the exhaut that is whiteish when reving. I have another friend call a mech friend of his. he says he had the same turbo on his 4 cyl mustang (pt 61mm) and they have been having seal and/or bearing problems causing oil to get sucked in and cause problems. i take the intake off again and it looks like there is more oil in there and it is moving around alot when i rev and at idle and might sound like it is hitting the bades of the turbo. this doesn't have a ton of miles! what is my next step??? thanks
mike
here is my build for list of equip, etc..: https://www.evolutionm.net/forums/ev...ged-build.html
so first i thought it might be the turbo (which it might be..)
the other week after finally having time to checking the plugs, this is what i found:
the plug on the far left of the engine was "smooshed". not misfired or anything, i don't think (no melting/cracking), but "pushed down".
my aem a/f stopped working allmost right after i got it installed, so i don't know about the a/f.
I put all new plugs in and it worked a lot better, but not "normal". Drove 50 miles during several days and just pulled the problem cyl. plug. it looks fine as of now, but car is still running rough. Engine is a little noisey, but i don't remember what it used to sound like or anything... any thoughts????????
mike
Last edited by 1mbrews8; Jul 28, 2009 at 08:49 PM. Reason: wrong link
#5
ok, so update...the motor is apart and my guy called and said that the one piston is fubar..what would cause this?? it was at lowish boost and not too much timing he says and is blaming it on a bad piston (he might have said all the pistons are shot on his msg, but couldn't really tell, but i think it would have drove worse if all were f-dup.). he says he is going to send it to the machine shop (i guess to clean it up), and we'll go from there. i am going to try to attach the aem map to see if anyone spots any issues...thanks
mike
mike
#6
yes it was dyno tuned (as well as driven). i do have all standard gauges. yes there were wot runs. i had someone else look at the cal (because i don't know how to post it up on here) and they said knock control was off. I forgot to add:
the boost is controled by an AVCR, not the ems if that makes a difference
the boost is controled by an AVCR, not the ems if that makes a difference
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