Let's play: Good Coil Pack, Bad Coil Pack
#5
Administrator
iTrader: (7)
the white spot on the bottom does not necessarily mean it's gone bad. Did you test them with a meter?
#11
I was wondering if the "white spot" on the rear was a sign of overheating or something and that they were on the way out. The 4 of them from my motor have the white spot. The one to the the right of the photo is one from my engine.
One other possibility is that it is misfiring due to being too rich. That wouldn't be the tuneup, as it is essentially the same tune-up I have been running for ages, and all my boosted pro-tuner customers are using the same base. If the tuneup was wrong, then surely it would misbehave every time I hit the "wrong" load points. I can drive for 300km and not have a problem, then it can came back again. It can be really bad, but then come good again. It always seems to be in the 3000-4000 RPM range when a bit of load is added, but you can drive through it (i.e past 4000 RPM or so) and it comes good again.
So if the tuneup isn't the problem per-se, and it is misfiring because it is too rich, then the only thing I can think of making it too rich is an injector/s sticking open. Has anyone had that?
The problem is the same whether I'm boosted or NA.
I might look at the LS1/2 coils, since they are plentiful here. I just got to find out more about the connectors/wiring harness.
Anyway - more fun... just to keep me from being bored LOL.
Cheers,
Hymee.
One other possibility is that it is misfiring due to being too rich. That wouldn't be the tuneup, as it is essentially the same tune-up I have been running for ages, and all my boosted pro-tuner customers are using the same base. If the tuneup was wrong, then surely it would misbehave every time I hit the "wrong" load points. I can drive for 300km and not have a problem, then it can came back again. It can be really bad, but then come good again. It always seems to be in the 3000-4000 RPM range when a bit of load is added, but you can drive through it (i.e past 4000 RPM or so) and it comes good again.
So if the tuneup isn't the problem per-se, and it is misfiring because it is too rich, then the only thing I can think of making it too rich is an injector/s sticking open. Has anyone had that?
The problem is the same whether I'm boosted or NA.
I might look at the LS1/2 coils, since they are plentiful here. I just got to find out more about the connectors/wiring harness.
Anyway - more fun... just to keep me from being bored LOL.
Cheers,
Hymee.
#12
Administrator
iTrader: (7)
Hymee: play process of elimination and just test each coil. If it were your tuning, I think you'd hear complaints from others using your software but since you haven't, I think you need to look elsewhere to identify what's causing the misfire.
If you've got a multimeter sitting around: http://www.finishlineperformance.com...16-07-1793.pdf
If you've got a multimeter sitting around: http://www.finishlineperformance.com...16-07-1793.pdf
#14
Hymee: play process of elimination and just test each coil. If it were your tuning, I think you'd hear complaints from others using your software but since you haven't, I think you need to look elsewhere to identify what's causing the misfire.
If you've got a multimeter sitting around: http://www.finishlineperformance.com...16-07-1793.pdf
If you've got a multimeter sitting around: http://www.finishlineperformance.com...16-07-1793.pdf
Thanks for that. I thought I had seem a bulletin like that some place. I thought I would have enough brownie points to get away with asking!
I'll check it out some more.
Cheers,
Hymee.
#15
Administrator
iTrader: (7)
no problem Mark, hope you find the culprit.
#17
Banned
iTrader: (3)
Oh. I thought this was a theoretical test (chumming the waters for trolls, as it were).
I didn't realize you needed a real test.
The ONLY test that is conclusive is the timing light.
The coilpack resistance test will only show a coil on its death bed, not one with an intermittent misfire.
I didn't realize you needed a real test.
The ONLY test that is conclusive is the timing light.
The coilpack resistance test will only show a coil on its death bed, not one with an intermittent misfire.
#19
The other thing about mine is that when this situation is "active", it often stalls at idle. When inactive, it is sweet.
I enquired about plugs yesterday. Parts manager dude advices $430 bucks a set. FFS! He reckoned Warren should be able to look after it. Warren T.
I've just moved my coil packs back to their "normal" location. I moved them close to the ABS to help fit the blower in. I was wondering if the leads were arcing or something, but I would need to be looking under the hood while it was happening to be sure. Just got it back together, and about to go for a looong test drive once I put the wheel back on.
Timing light sounds like a good idea, but it only going to tell me that it mis-fired. I already know that.
All I know it is either fuel or spark. There isn't much else that it can be in gasoline engines At least the air is free!!
Cheers,
Hymee.
#21
Well, I just took her for a drive up to Steve Irwin's and back. (Fair Dinkum!) No crocs reared their ugly heads. I really need to drive it for a week and see what comes of it. If it lasts a week or so, I'll try to shorten my coil pack extension bracket and see if I can insulate between the leads/coils and the ABS bracket.
Lots of fun.
Last time I used the term "cheap" (or what it dear?) on a US forum, I confused people! But I hear you. I'll try Supercheap then
Cheers,
Hymee.
Lots of fun.
Last time I used the term "cheap" (or what it dear?) on a US forum, I confused people! But I hear you. I'll try Supercheap then
Cheers,
Hymee.
Last edited by Hymee; 11-28-2008 at 11:06 PM.
#24
I think you meant http://www.supercheapauto.com.au/
Cheers,
Hymee.