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Model specific boards => Golf mk4 => Topic started by: MoMartin on 30 March 2014, 18:09
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I've just bought an agu golf 1.8t, and have noticed that there are a few minor problems with it, and as the dump valve is one of the few modifications on it, I thought it may be contributing to the problem. The problem is that the turbo sometimes lags / the engine holds back when using the throttle.
(http://i.imgur.com/durNek1.jpg)
(http://i.imgur.com/Zw0St9J.jpg)
(http://i.imgur.com/rLZHg0O.jpg)
Cheers, Mo
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Images aint showing.
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I would get a forge one fitted on your car.
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Also check it over for any fault codes etc then you can start sorting out where your issue lies.
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Looks luke the dv is installed reversed. A few people do this for louder tssssh the blue piping looks like n249 bypass
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Images aint showing.
Fixed
Also check it over for any fault codes etc then you can start sorting out where your issue lies.
I'm getting it checked this tuesday, i will report back then, if i Can't find and fix the problem.
Thanks, Mo
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It looks fine, with regards to the orientation I've contacted Forge about this and they claim their diverter valves are designed to operate fine regardless which way it is fitted. I have installed mine with the bottom of the diverter valve connected to the charge pipe too, but I might switch it around for aesthetics.
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I'm pretty sure mine is fitted the other way around
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Wonder what's hiding under the bit if black tape?!!!
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I'm pretty sure mine is fitted the other way around
mine is also fitted the other way round i was led to believe this to be the correct orentation.
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Wonder what's hiding under the bit if black tape?!!!
:undecided: i would be wondering that too,I'm guessing its joining two pieces of vac pipe or its been split and bodged up :whistle:
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The orientation of the DV is the 'wrong' way it gives a loud cherp noise rather than a psch. I would fit it the other 'right' way because regardless what Forge say there is plenty on the net about people having issues with them fitted the 'wrong' way
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Wonder what's hiding under the bit if black tape?!!!
:undecided: i would be wondering that too,I'm guessing its joining two pieces of vac pipe or its been split and bodged up :whistle:
You would be correct in thinking that it's a bodge job! It was a potential vacuum leak, so I decided to black tape it, until the new silicon hosing comes.
Also, could someone direct me to the 'correct' way of fitting a DV?
Thanks, Mo
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It seems it's fitted both ways with people giving different reasons for fitting it in different orientation. I've tried fitting it both ways with no difference in sound, boost or overall feel of the car. I think I'll be rotating mine around so the charge pipe feeds to the side of the diverter valve, purely for aesthetics.
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An update - cut the silicone hosing back from where it's taped up, it wasnt that, that was causing the problem.
Once again, could someone direct me to a guide on how to 'correctly' fit a dump valve / recirculation valve?
Thanks, Mo
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It seems you're assuming the diverter valve is the cause of your engine problems and that a standard car might not have had the same problems you're experiencing. It's probably more effective to do a diagnostic and maybe a boost leak test.
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An update - cut the silicone hosing back from where it's taped up, it wasnt that, that was causing the problem.
Once again, could someone direct me to a guide on how to 'correctly' fit a dump valve / recirculation valve?
Thanks, Mo
Just swap the two big hoses over
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Which hoses haha, I'm still a complete rookie at Mk4 golfs, so i have no idea which hoses do what / where everything is :huh:
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Nino it's an AGU so no N249 lol
Take your DV off and swap the two hoses around that are connected to it
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Which hoses haha, I'm still a complete rookie at Mk4 golfs, so i have no idea which hoses do what / where everything is :huh:
At the moment your DV is sat horizontally, you need to take it out of both pipes and turn it vertically with the blue silicone pipe connecting at the top
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Which hoses haha, I'm still a complete rookie at Mk4 golfs, so i have no idea which hoses do what / where everything is :huh:
At the moment your DV is sat horizontally, you need to take it out of both pipes and turn it vertically with the blue silicone pipe connecting at the top
The blue silicone pipe is connected at the top of the DV? it just isnt mounted properly, so it would appear that it is attached to its side. i'm still unsure what you mean about the big hose :huh:
Cheers, Mo
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If you cannot figure this out then I'd suggest not ever working on a car.
There are three hoses going to the dv, one small vac hose which goes to the top, one larger one that goes into the bottom of the valve and one larger one that goes into the side.
You need to swap over the two larger hoses so the one that is currently going to the side goes into the bottom of the valve and vice versa
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I think this is where i am getting mixed up... The guy that had the car before me only had 2 pipes going into it, no third pipe.
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The third is the blue silicone one
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No 3rd pipe? i'm assuming this to be the vaccum pipe that goes from the dv valve top to the inlet manifold if so this won't help being missing as you will be loosing boost with it not connected i fail to understand why and how the previous owner managed to bodge up fitting a dv valve :rolleyes: also have you sorted out your n75 wiring/plug?
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If you cannot figure this out then I'd suggest not ever working on a car.
:grin: :grin:
There are three hoses going to the dv, one small vac hose which goes to the top, one larger one that goes into the bottom of the valve and one larger one that goes into the side.
You need to swap over the two larger hoses so the one that is currently going to the side goes into the bottom of the valve and vice versa
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I think this is where i am getting mixed up... The guy that had the car before me only had 2 pipes going into it, no third pipe.
Here you can see mine:
(http://i790.photobucket.com/albums/yy183/codling1234/IMAG1307_zps85961e25.jpg) (http://s790.photobucket.com/user/codling1234/media/IMAG1307_zps85961e25.jpg.html)
The bottom of the valve goes into the TIP and you can see the other two hoses
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The DV is now properly installed, the guy decided to plug the other hole that the DV sits in, just for the louder 'pssh', i've noticed that it has improved the throttle response with it, so hopefully that was the only problem. Thanks for the help haha, It was a lot easier than i anticipated.
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Ha I can see the blank now, so he was using a recirc valve as an atmospheric valve. 10/10 for effort
Glad you have seen the errors of his ways
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Ha I can see the blank now, so he was using a recirc valve as an atmospheric valve. 10/10 for effort
Glad you have seen the errors of his ways
I didn't even spot that until I read your post! Well spotted, I thought it was all plumbed in, guess you can't really take anything for granted when it comes to buying used cars it's on the border of comical what some people do!
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Haha, its not the worse he has done either..
It just makes me wonder what else he might of done!