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#1 |
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MM Fanatic
1990 LX hatch
Join Date: Aug 2006
Location: Hobart Indiana
Posts: 4,392
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Piston problem
I started putting a set of heads on my car and discovered a series of nasty marks, dents and craters on the surface of #3. I ground them smooth and lightly sanded over them. I think they were the culprit of a random part throttle pre ignition problem I have been having. When I'm done I'll head to the dyno and post resullts.
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#2 |
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Hardcore Enthusiast
2002 Gt
Not Slow
Join Date: Aug 2007
Location: SJ-CA, 50-ft elev.
Posts: 1,658
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when doing my top end rebuild, i removed a gang of shit of my piston, cleaned them up to like new condition, and it solve many probs. i had.
let us know how it turns out,. im curious |
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#3 |
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MM Fanatic
89 GT
Join Date: Apr 2007
Location: NY
Posts: 4,666
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They also could have been the result of the problem you were having.
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#4 | |
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MM Fanatic
Join Date: May 2007
Location: Bloomington, IL
Posts: 4,627
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EGR?? If it isn't functioning, but the computer thinks it is, the computer bumps the timing during EGR function (part throttle) and it will cause pinging if the EGR isn't actually working. you can buy a little plug on ebay that tricks the computer into thinking the EGR is non-functional.
__________________
88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it
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#5 | |
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MM Fanatic
1990 LX hatch
Join Date: Aug 2006
Location: Hobart Indiana
Posts: 4,392
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#6 |
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MM Fanatic
89 GT
Join Date: Apr 2007
Location: NY
Posts: 4,666
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The delete plate and the thing ryans88gt is talking about are 2 different things. The little plug that he's talking about plugs into the connector for the EGR.
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#7 |
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MM Fanatic
1990 LX hatch
Join Date: Aug 2006
Location: Hobart Indiana
Posts: 4,392
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I realize that. I believe the thing ryans is talking about is the EGR simulator, I have no simulator, the trouble code is present so the system runs with the EGR function off due to no signal.
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#8 | |
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Enthusiast
1989 GT
KB 2.1L Flowzilla
Join Date: Mar 2008
Location: Old World
Posts: 540
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#9 |
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MM Fanatic
Join Date: May 2007
Location: Bloomington, IL
Posts: 4,627
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But then your CEL is on all the time, so you could have any number of other sensors going bonkers and you would never know. It was only like $20 for the simulator.
Dremmel fly cut pistons?? I got my finger crossed for you, I hope you get that preignition problem fingered out.
__________________
88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it
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#10 |
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Enthusiast
1989 GT
KB 2.1L Flowzilla
Join Date: Mar 2008
Location: Old World
Posts: 540
![]() iTrader: 0 reviews
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Just $20? Have to get me one ASAP.
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