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Model specific boards => Golf mk4 => Topic started by: monty9120 on 28 June 2012, 16:47

Title: boost issues.
Post by: 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.
Title: Re: boost issues.
Post by: rio_gti on 28 June 2012, 16:55
sounds like a split vacuum pipe, might you have missed one when checking??
Title: Re: boost issues.
Post by: monty9120 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
Title: Re: boost issues.
Post by: Dalo Harkin on 28 June 2012, 16:58
when looking for boost leaks, oil is the easiest give away
Title: Re: boost issues.
Post by: monty9120 on 28 June 2012, 19:12
there is a little around the injectors its always been there
Title: Re: boost issues.
Post by: Dalo Harkin 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
Title: Re: boost issues.
Post by: monty9120 on 28 June 2012, 21:22
nope any idea what this entails and how i get them off.
Title: Re: boost issues.
Post by: 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:
Title: Re: boost issues.
Post by: bobbieboy69er on 28 June 2012, 21:33
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?
Title: Re: boost issues.
Post by: Dalo Harkin on 29 June 2012, 08:57
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:
Title: Re: boost issues.
Post by: monty9120 on 29 June 2012, 16:40
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?

er what does this mean lol?

i drove to work today and it didnt seem too bad

if i had a boost leak surely it would do it all the time, it never does it when warm
Title: Re: boost issues.
Post by: bobbieboy69er on 29 June 2012, 18:02
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?

er what does this mean lol?

i drove to work today and it didnt seem too bad

if i had a boost leak surely it would do it all the time, it never does it when warm

the point im getting at, is that you shouldnt be putting your foot down while its cold.  i more or less ride the clutch until it warms up to at least 40-50!!  i did once give it some when it was cold and it just coughed and spluttered!

So in summary, let it warm up before you give it anymore that 2500 rpm :wink:
Title: Re: boost issues.
Post by: Dalo Harkin on 29 June 2012, 18:07
I always wait for the temp gauge to et to 90 before giving it any
Title: Re: boost issues.
Post by: Wazzzer on 29 June 2012, 18:23
I wait until my oil temp gauge starts moving before I put my foot down :smug:
Title: Re: boost issues.
Post by: rio_gti on 29 June 2012, 19:10
I wait until my oil temp gauge starts moving before I put my foot down :smug:

We're not all that posh!!!
Title: Re: boost issues.
Post by: monty9120 on 30 June 2012, 17:05
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?

er what does this mean lol?

i drove to work today and it didnt seem too bad

if i had a boost leak surely it would do it all the time, it never does it when warm

the point im getting at, is that you shouldnt be putting your foot down while its cold.  i more or less ride the clutch until it warms up to at least 40-50!!  i did once give it some when it was cold and it just coughed and spluttered!

So in summary, let it warm up before you give it anymore that 2500 rpm :wink:

i very rarely go over 2500revs anyway. it does it from 1500 upwards. i need to put my foot down to go anywhere lol
Title: Re: boost issues.
Post by: Miss Black GTI on 01 July 2012, 13:19
Hi guys dont know as much about cars as all of u do!

but mine does the same on and off since I bought it, had an engine flush and hasnt been serviced too long ago, it can be fine for ages then all of a sudden it starts losing power and juddering when accelerating or at idle. although it seems like its clogged up then after a while of driving it it can clear and i get a huge boooooost and it goes back to driving like normal! any ideas????

Cheers Tamara

(mk4 golf gti 1.8 20VT 1999 99K)
Title: Re: boost issues.
Post by: richw911 on 01 July 2012, 13:36
Hi guys dont know as much about cars as all of u do!

but mine does the same on and off since I bought it, had an engine flush and hasnt been serviced too long ago, it can be fine for ages then all of a sudden it starts losing power and juddering when accelerating or at idle. although it seems like its clogged up then after a while of driving it it can clear and i get a huge boooooost and it goes back to driving like normal! any ideas????

Cheers Tamara

(mk4 golf gti 1.8 20VT 1999 99K)

Any fault codes? boost leak or faulty ignition amp?  :undecided:
Title: Re: boost issues.
Post by: Miss Black GTI on 01 July 2012, 13:50
The only fault code I have comes up now and then its temperature warning but happens mainly when car is cold, i then top up water chamber and it doesnt come on again for a little while, but i do have to do this more times than any other car ive had! only other problem im aware of is a small whirring noise for a second when i turn the car on (noisy starter motor possibly?)

not sure if any of these problems would be related but car started juddering today for a bit doesnt change if I turn it off and on again at all, but it did smell a bit funny today tho little bit like burning!!!!

How would I find out if there is a boost leak or faulty ignition amp tho?
Title: Re: boost issues.
Post by: moby on 01 July 2012, 13:51
Downpipe
Title: Re: boost issues.
Post by: DunnDeal12 on 01 July 2012, 14:08
How would I find out if there is a boost leak or faulty ignition amp tho?

downpipe?????

your just full of sh!t today mate.

boost leak = try one of these http://www.ebay.co.uk/itm/TURBO-BOOST-LEAK-TESTER-VW-1-9TDI-DIESEL-JETTA-PASSAT-GOLF-GTI-RABBIT-BUG-/140765906584?pt=Motors_Automotive_Tools&hash=item20c64d4698

faulty ignition amp = just buy a new one there not that dear from euro car parts.
Title: Re: boost issues.
Post by: rio_gti on 01 July 2012, 15:22
You have to keep toppin up water?? Could be head gasket check under oil cap and see if it looks creamy in there
Title: Re: boost issues.
Post by: Wazzzer on 01 July 2012, 15:49
ignition amp for ECP is £88

http://www.eurocarparts.com/ecp/c/Volkswagen_Golf_1.8_1999/p/car-parts/car-electrics-and-car-lighting/ignition/ignition-modules/?415440120&1&33fea75cac847c6e194feceb99e0a0ed4ccb493c&000503
Title: Re: boost issues.
Post by: DunnDeal12 on 01 July 2012, 16:08
ignition amp for ECP is £88

http://www.eurocarparts.com/ecp/c/Volkswagen_Golf_1.8_1999/p/car-parts/car-electrics-and-car-lighting/ignition/ignition-modules/?415440120&1&33fea75cac847c6e194feceb99e0a0ed4ccb493c&000503

£66 with forum discount.
Title: Re: boost issues.
Post by: monty9120 on 01 July 2012, 20:40
does anyone have any idea. what all the boost pipes for the turbo are. so i can check them all

i seem to have a little oil around all the injectors.

i dont have any issues with running idling or when its warm. just sometimes when it pulls past 2k revs it stutters.

on the motorway its perfect as well
Title: Re: boost issues.
Post by: monty9120 on 04 July 2012, 12:01
right the car is playing up now even on the motorway if you put your foot down you get a miss before it kicks down

i have replaced all the vacuum hoses as they were falling to bits with decent clips. it does feel like its revving better but still playing up a little.

does anyone know where i can get this pipe thats split? i have looked around but no luck
(http://img26.imageshack.us/img26/9923/dsc01172ic.jpg) (http://imageshack.us/photo/my-images/26/dsc01172ic.jpg/)


driving to london and back with gaffer tape and battery overflow pipe to use for the vaccum shows how bullet proof these cars are.

the whoosh sound is coming from the front of the engine. i did checkl the pancake pipe but the sounds nowhere near there. i have tried to check as many pipes as possible and except the vacuum and the pipe above all seem ok.

such a shame that many people have issues as these are great cars

i have no fault codes which doesnt help much lol

also does anyone know where to get the seals for the injectors and how hard they are to do?
Title: Re: boost issues.
Post by: Dalo Harkin on 04 July 2012, 13:18
creation motorsports on ebay do them, I'll be selling mine when my catch can arrives, where abouts are you?
Title: Re: boost issues.
Post by: monty9120 on 04 July 2012, 13:19
stourbridge west midlands
Title: Re: boost issues.
Post by: Dalo Harkin on 04 July 2012, 13:21
this is what i got

http://www.ebay.co.uk/itm/VW-GOLF-BORA-MK4-1-8T-20VT-SILICONE-BREATHER-PIPES-AGU-/160764236539?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item256e4b92fb
Title: Re: boost issues.
Post by: monty9120 on 04 July 2012, 13:24
so what is the right name for the pipe lol. what is the curly pipe for :)
Title: Re: boost issues.
Post by: Dalo Harkin on 04 July 2012, 13:35
they are breather pipes part of what a catch can would replace