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Help -misfire in XR6T 

 

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 Post subject: Help -misfire in XR6T
Posted: Thu Jun 28, 2007 9:46 pm 
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engine flutters on boost between 3500-6000. wants 2 go hard but struggles.Got 97000 ks,on board,not sure whats bin done to it but not stock.Other times when after running 4 five minutes will clean rev with major wheelspin. Whats the go.
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Posted: Thu Jun 28, 2007 10:35 pm 
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could be heaps of things

dirty plug or airfilter

not much to go on
year of car?

where did you get the car from and how do you know it is not stock?

 

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Posted: Fri Jun 29, 2007 2:22 am 
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Apparently modded T's sometimes like to have coilpacks die and there's six of them. I think mine's doing the same thing but it only ever happens under load.

Edit: BA plugs are due at 105,000k's have yours been done yet? If its not a standard XR6T the plugs will need to be gapped down a bit too, think mine are 0.7mm.

 

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Posted: Fri Jun 29, 2007 7:02 pm 
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fnp wrote:
Apparently modded T's sometimes like to have coilpacks die and there's six of them. I think mine's doing the same thing but it only ever happens under load.

Edit: BA plugs are due at 105,000k's have yours been done yet? If its not a standard XR6T the plugs will need to be gapped down a bit too, think mine are 0.7mm.


yeah mine are gapped at 0.8mm, what sort of power are u making??
after u give it WOT and u slow down does it idle funny?

 

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Posted: Fri Jun 29, 2007 7:45 pm 
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03 ba 5 speed manual phantom purple black leather trim,supreme sound,2 12 inch clarion subs custom mounted at 45d in boot.Knpanel filter,ss induction wide mouth,alloy timing gear with small cam.hits rev limiter at 6100.close ratio box with leaky diff seal.
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Posted: Fri Jun 29, 2007 7:51 pm 
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Mr Man wrote:
fnp wrote:
Apparently modded T's sometimes like to have coilpacks die and there's six of them. I think mine's doing the same thing but it only ever happens under load.

Edit: BA plugs are due at 105,000k's have yours been done yet? If its not a standard XR6T the plugs will need to be gapped down a bit too, think mine are 0.7mm.


yeah mine are gapped at 0.8mm, what sort of power are u making??
after u give it WOT and u slow down does it idle funny?


Around 270rwkw.. idles fine after a squirt but it likes to be warmed up a bit before being driven on a cold morning.

 

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Posted: Fri Jun 29, 2007 7:52 pm 
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It idles erratic normally but more after u ring its neck. Cant find plugs.2 much s**t in way.will miss at 100 clicks in top if you accelerate lightly.PULLING HAIR OUT AT NO END.
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Posted: Fri Jun 29, 2007 8:00 pm 
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Just take it in to a dealer and ask them to check your plugs and coils.

 

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Posted: Fri Jun 29, 2007 8:51 pm 
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Bin back 2 dealers 3 times already cant find jack s**t! Thinkin bout gettin dyno tuned 2 find problem but still under new car warranty.Worried will void this! :evil:
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Posted: Fri Jun 29, 2007 9:35 pm 
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If it's got a cam in it they may not want to know about warranty and anyway it's only got 3000k's left hasn't it?

 

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Posted: Fri Jun 29, 2007 10:36 pm 
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Nah paid extra 4 coverage so 100,000 ks f**k all. Got 1 month 1 week left 2 go. tryin 2 get my moneys worth! paid 30k 4 it,would want 2 go 4 that money.My old xc almost pulls as hard (almost). First turbo car ever had.All the rest bin 8 bangers and lookin 2 head back that way. NOT IMPRESSED!
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Posted: Fri Jun 29, 2007 10:41 pm 
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Guarantee it's plugs matey. Mine does exactly the same thing and it was on the dyno. KPM reckon new plugs will fix it. "I" will fix it when I get the defect sticker lifted......

 

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Posted: Fri Jun 29, 2007 10:47 pm 
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R they on turbo side or other? havn"t bin under or over car yet! how hard to get 2? Should i use platinum or iridium plugs?
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Posted: Sat Jun 30, 2007 12:11 am 
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They're on the intake side (ie opposide side to the turbo) under a pile of intake manifold and yes they're iridium.

 

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Posted: Sat Jun 30, 2007 12:55 am 
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plugs are directly in the middle of the head, 1 cam on either side of them, and yes they can be a pain to get to, u might not have the tools in u'r every day kit. but if u want pointers start by removing u'r turbo plennum that covers the engine, 3 10m nuts and the intercooler piping, also disconect the wastegate vacume line and note where it comes off. then useing i think a 5m alan key undo all the bolts holding the plastic cover onto the tappet cover, under here you will find u'r coils on each plug. replace with iridium plugs. i'm not sure but i think they are due @150.000 not 105.000 but dont hold me to that. maybe give the throttle body a clean while u have all the piping off, probly fairly dirty @90.000. do u have a ss throttle body? or just standard?
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