Search | Car Forums | Gallery | Articles | Helper | AF 350Z | IgorSushko.com | Corporate |
| Latest | 0 Rplys |
06-08-2010, 08:46 PM | #1 | |
AF Regular
Join Date: Nov 2006
Location: Naperville, Illinois
Posts: 116
Thanks: 0
Thanked 0 Times in 0 Posts
|
Confused?!?
i have been having 2 different problems that i havnt seen before. the first is when i rev the car up (i have a 92 vr4 with minor bolt ons) nd the rpms drop back down to idle a little bit of white smoke come out the exhaust, but only when the car gets back down to idle. i know that usually white smoke is an indicator of burning coolant so i checked my oil for a blown head gasket but nothing.
the second problem is while driving in boost or not sometimes the car just bogs out almost like a hard misfire but it doesnt happen all the time. When in WOT it seems to misfire/backfire quite a bit. I have a MBC set at around 13 and gapped plugs to .035 right now which shouldnt hit fuel cut or spark knock correct??? Any advice would be greatly apprectiated!! |
|
06-08-2010, 10:49 PM | #2 | |
Your worst nightmare
Join Date: Oct 2004
Location: Smithfield, Pennsylvania
Posts: 6,060
Thanks: 40
Thanked 252 Times in 246 Posts
|
Re: Confused?!?
I guarantee its NOT white smoke. So many people have confused oil smoke as being white its ridiculous.
If plugs are fouled, or there is any issue with ignition components you could easily get spark blowout. Do you have a datalogger? If not, get one.
__________________
|
|
06-10-2010, 04:08 PM | #3 | |
AF Regular
Thread starter
Join Date: Nov 2006
Location: Naperville, Illinois
Posts: 116
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: Confused?!?
ok thanks man but i dont really understand what u meant by it not being white smoke?? i checked the oil in the case a blown head gasket and havin coolant in the oil. but ya i have fairly new plugs wires and coilpacks.
|
|
06-10-2010, 05:25 PM | #4 | |
The Red Baron
|
Re: Confused?!?
What he means is that it isn't smoke, it's steam. Also, just because you didn't find coolant in the oil doesn't mean that your HG is fine or a head isn't cracked. Check for hydrocarbons in the coolant.
AS for the plugs, he's suggesting they're fouled. They can foul in a VERY short period of time. If they're fouled then the spark is weak. At WOT you can get spark blowout. This is where the cylinder pressure actually blows out the spark before it can ignite the air/fuel mixture. I would suggest checking those two things first. |
|
06-10-2010, 05:25 PM | #5 | ||
Your worst nightmare
Join Date: Oct 2004
Location: Smithfield, Pennsylvania
Posts: 6,060
Thanks: 40
Thanked 252 Times in 246 Posts
|
Re: Confused?!?
Quote:
If its a fuel issue it will be greyish.
__________________
|
||
06-11-2010, 10:14 PM | #6 | |
AF Regular
Join Date: Dec 2007
Location: Easton, Pennsylvania
Posts: 327
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: Confused?!?
it's most likely valve stem seals.
__________________
www.groundzeroperformance.com www.3swarehouse.com 1991 Stealth R/T Twin Turbo... sitting... 1996 Orchid Pearl Stealth R/T.... daily driver duty, 275k+ miles and counting! 1995 3000GT Spyder SL... being modified... |
|
06-17-2010, 01:06 AM | #7 | |
AF Regular
Thread starter
Join Date: Nov 2006
Location: Naperville, Illinois
Posts: 116
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: Confused?!?
so i just checked my ECU and all three of the capacitors are leaking!!I wanna fix this problem then buy the tune up kit from 3sx just to eliminate some options.
If any one has some advice on whether to repair or replace would be most appreciated. |
|
06-20-2010, 10:49 AM | #8 |
AF Regular
Join Date: Dec 2007
Location: Easton, Pennsylvania
Posts: 327
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: Confused?!?
__________________
www.groundzeroperformance.com www.3swarehouse.com 1991 Stealth R/T Twin Turbo... sitting... 1996 Orchid Pearl Stealth R/T.... daily driver duty, 275k+ miles and counting! 1995 3000GT Spyder SL... being modified... |
06-28-2010, 09:37 PM | #9 | |
AF Newbie
Join Date: Mar 2008
Location: Easton, Pennsylvania
Posts: 74
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: Confused?!?
Your plug gap is also too large. You will start to get spark blow out. Gap them plugs to 0.032 at the most... 0.028 will work great.
__________________
94 Dodge Stealth TT 94 Dodge Stealth TT, pearl yellow, for sale 93 3000GT VR4, stock, for sale, red 96 3000GT Spyder SL, black, stock, might sell 97 3000GT VR4: stock, for sale, red 92 Galant VR4: TBE, bunch of crap 95 Montero SR: run stuff over vehicle |
|
07-02-2010, 12:42 AM | #10 | |
AF Regular
Thread starter
Join Date: Nov 2006
Location: Naperville, Illinois
Posts: 116
Thanks: 0
Thanked 0 Times in 0 Posts
|
Re: Confused?!?
thanks Hans ill try that for sure! Ill let u know how it works.
|
|
|
POST REPLY TO THIS THREAD |
|
|