What Do You Think It Could Be ?

[WARLORD]

to day i ran my 33 gtst down the 1/4 after a couple of passes at 12.2@123mph with a crap 60 foot of 2.2, i ran my best 60 foot at a 1.8 but right after i hit second gear a all mighty bang went off (back fire) and the car lost power for a split second so i came off the gas until 3/4 track and jump on it again and it felt fine ,i got back to the pit area and i noticed on when you lightly press the gas it runs like its missing ,i also noticed this in the last three runs leading up to my last run ,now i think its ???????? but what i would like is some input from some sau members on what they think it could be......thanks.

[WARLORD]

anyone !!!!!

[PM-R33]

No idea man but thats a great time!! What power you pushing out nowadays?

[R31Nismoid]

could be anything

sounds like plugs need changing most likely.

[WARLORD]

could be anything

sounds like plugs need changing most likely.

yes ill give that a go today!!

pm-r33 im making 304kw atw but i think there is a little more to come as im running 17.5 psi

Edited August 20, 2008 by WARLORD

[BHDave]

It may also be worth checking for splits or holes on your intercooler hoses. I've seen a few cars lately (including mine) which have hole joiners one way or another but still drive reasonably ok

[WARLORD]

new plugs but same problem.

ill try the intercooler next

[4core]

i had this problem with my car, it turned out to be the intercooler pipe

one of the vacuum lines came off the fuel pressure reg and for some reason (im not gonna pretend i know what im talking about here) it backfired and pretty much just died in the arse, it would idle but wouldnt accelerate, check your cooler piping, find the loose hose and reconnect it

ps. this was a right pain in the arse to diagnose and fix at 2am on scarb beach rd in the rain *shakes fist in a menacing fashion*

[The_Duke]

this was actually my car, didnt realise brian had logged in on my computer *shakes fist at brian*

yeah...

[WARLORD]

intercooler all good .

what i have noticed is that when the car is cold its fine andwhen its hot it plays up.

could be coil packs.i dont think its normal to happen so low in the rev range but i guess anything can happen ,there only 3 years old ,ill have to check them

has anyone got any more ideas

[Zilch*]

Check the oil lines that go to the turbo mate, I had the same thing happen to me and it turned out that the line was leaking oil and hence not able to make as much power. It also was heat dependent like you have described.

[400kw]

intercooler all good .

what i have noticed is that when the car is cold its fine andwhen its hot it plays up.

could be coil packs.i dont think its normal to happen so low in the rev range but i guess anything can happen ,there only 3 years old ,ill have to check them

has anyone got any more ideas

did you check the inside of the 90 deg bends the run through in in left inner gaurd

,

[WARLORD]

earth wire .....i noticed the earth wire on the turbo side is not there. does anyone have pics to what it is connected to cos ive got the earth wire i know one side is on the exhaust manifold but have no idea what it plugs into.

o and could this be part of my problem.

[PM-R33]

Well i hope not because mine broke off a few months back.....

[dangerman4]

hey warlord

try pumping compressed air into your intake system with a compressor.

i do this about every 6 months as it shows up any leaks in the system.

the easiest way i have found is undoing the clamp where your afm is, getting a plastic freezer

bag putting over the afm and then reinstalling the afm and doing the clamp up.

you can then use a trigger nozzle from your air comp stick into the fuel reg hose and pump 2 bar

into your intake system.

a lot of leeks wont show up unless there under pressure so this is the quickest and easiest way that i have found

and works every time.

and also a poor earth wont do the engine any good put it that way.

[WARLORD]

Well i hope not because mine broke off a few months back.....

do you remeber where the connector plugs into

[WARLORD]

hey warlord

try pumping compressed air into your intake system with a compressor.

i do this about every 6 months as it shows up any leaks in the system.

the easiest way i have found is undoing the clamp where your afm is, getting a plastic freezer

bag putting over the afm and then reinstalling the afm and doing the clamp up.

you can then use a trigger nozzle from your air comp stick into the fuel reg hose and pump 2 bar

into your intake system.

a lot of leeks wont show up unless there under pressure so this is the quickest and easiest way that i have found

and works every time.

and also a poor earth wont do the engine any good put it that way.

thanks !!!!!

what do you recommend i use for a earth cable, and the best place to put it.

[PM-R33]

Yeah i do. Hope i can explain this well.

Behind the power steering resevoir, on the strut tower down near the turbo intake, there should be a little gold piece of metal, the black connector just slides over that.

[WARLORD]

Yeah i do. Hope i can explain this well.

Behind the power steering resevoir, on the strut tower down near the turbo intake, there should be a little gold piece of metal, the black connector just slides over that.

that has got to be one of the best descriptions i have ever read,,,i new where to go and found it it 2 sec thanks.....

[PM-R33]

No worries man