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Author Topic: boost issues.  (Read 3730 times)

Offline monty9120

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boost issues.
« on: 28 June 2012, 16:47 »
i had issues when the car was cold. i would accelerate and it would miss and wouldnt go anywhere

i changed the dump valve to a forge 007. the issue was 99% gone

latelly the same symptoms have come back. maybe not as bad but still there. sometimes hesistations through the revs

it doesnt seem to do it when its warm at all though. never has done.

i have checked over as many pipes as possible. replacing any that were abit dodgy.

there seems to be a pss noise like a dump valve in the engine bay. i gather a gentle whoosh is normal. it seems to come from around the injector side but its hard to pin point.

do the valves get noisy with age. my car has got 160k on the clock. its starting to make a weird noise from the cam belt or head area. once revved its not there.
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Offline rio_gti

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Re: boost issues.
« Reply #1 on: 28 June 2012, 16:55 »
sounds like a split vacuum pipe, might you have missed one when checking??
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Offline monty9120

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Re: boost issues.
« Reply #2 on: 28 June 2012, 16:57 »
well i have checked as many as possible. especially around the injector area.

how come when fitted the dump valve it stopped? i did find a massive split in the pipe from the head but thats sorted. still no difference
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Offline Dalo Harkin

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Re: boost issues.
« Reply #3 on: 28 June 2012, 16:58 »
when looking for boost leaks, oil is the easiest give away
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Offline monty9120

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Re: boost issues.
« Reply #4 on: 28 June 2012, 19:12 »
there is a little around the injectors its always been there
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Offline Dalo Harkin

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Re: boost issues.
« Reply #5 on: 28 June 2012, 19:34 »
have you replaced the top and bottom o rings on the injectors? you can get boost leaking from there
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ARZ K03s, Oettinger Side Skirts, R32 front, Carbon stage 2, Forge 007p (yellow spring), Forge Actuator (yellow spring), Pipercross panel filter with DSG parts, N249 and N112 deleted, SAI deleted, Carbon canister deleted, Rear wiper deleted, Long Life turbo back custom exhaust with 200 cell sports cat, VR6/G60 clutch kit, Creation Motorsport TIP, Catch can, 'Wellycooler', K04 charge pipe, S3 ported inlet manifold - looks pretty standard on the outside though :)

Offline monty9120

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Re: boost issues.
« Reply #6 on: 28 June 2012, 21:22 »
nope any idea what this entails and how i get them off.
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Offline cullygti

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Re: boost issues.
« Reply #7 on: 28 June 2012, 21:32 »
you wouldnt loose that much pressure from leaky injector seals mine have been fooked for a while and i got full boost  :wink:
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Offline bobbieboy69er

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Re: boost issues.
« Reply #8 on: 28 June 2012, 21:33 »
Quote from: monty9120 on 28 June 2012, 16:47
i had issues when the car was cold. i would accelerate and it would miss and wouldnt go anywhere

i changed the dump valve to a forge 007. the issue was 99% gone

latelly the same symptoms have come back. maybe not as bad but still there. sometimes hesistations through the revs

it doesnt seem to do it when its warm at all though. never has done.

i have checked over as many pipes as possible. replacing any that were abit dodgy.

there seems to be a pss noise like a dump valve in the engine bay. i gather a gentle whoosh is normal. it seems to come from around the injector side but its hard to pin point.

do the valves get noisy with age. my car has got 160k on the clock. its starting to make a weird noise from the cam belt or head area. once revved its not there.

When your accelerating is the turbo spooling?
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Offline Dalo Harkin

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Re: boost issues.
« Reply #9 on: 29 June 2012, 08:57 »
Quote from: cullygti on 28 June 2012, 21:32
you wouldnt loose that much pressure from leaky injector seals mine have been fooked for a while and i got full boost  :wink:

Get it sorted then  :smiley:
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ARZ K03s, Oettinger Side Skirts, R32 front, Carbon stage 2, Forge 007p (yellow spring), Forge Actuator (yellow spring), Pipercross panel filter with DSG parts, N249 and N112 deleted, SAI deleted, Carbon canister deleted, Rear wiper deleted, Long Life turbo back custom exhaust with 200 cell sports cat, VR6/G60 clutch kit, Creation Motorsport TIP, Catch can, 'Wellycooler', K04 charge pipe, S3 ported inlet manifold - looks pretty standard on the outside though :)
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