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Gtir Motorsport club » Tech room » Help and Advice » No boost

No boost

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1 No boost on 19th January 2016, 7:32 pm

Digitalfaze

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Hehe another issue im trying to pinpoint is the car has no boost anymore, when the turbo kicks in all i get is a lack of power and a loud sucking sound, i thought it might have been the dump valve but removed that and blocked it off but still the same issue, anyone got any ideas on where to check?

http://www.avaloncreative.co.uk

2 Re: No boost on 19th January 2016, 9:38 pm

luke s


Are you sure your wastgate isn't open? Check you actuator, are you running a standard set up ext?

3 Re: No boost on 19th January 2016, 9:44 pm

nomad

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Is it smoking or anything .... intercooler pipes all good ????


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4 Re: No boost on 19th January 2016, 11:16 pm

Digitalfaze

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Ill check my intercooler pipes, no smoke just a slight misfire when boost does come in, i let off when that happens

http://www.avaloncreative.co.uk

5 Re: No boost on 19th January 2016, 11:20 pm

luke s


I'd check all your boost pipes and clamps bud

6 Re: No boost on 19th January 2016, 11:23 pm

Stu

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Did it happen suddenly? Did something happen before it happened. Were you on boost and then all of a sudden no boost..?
Have you worked on anything lately?



Last edited by Stu on 19th January 2016, 11:32 pm; edited 1 time in total


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7 Re: No boost on 19th January 2016, 11:28 pm

Digitalfaze

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@luke s wrote:Are you sure your wastgate isn't open? Check you actuator, are you running a standard set up ext?

Im running an avcr set at 1bar so not standard

http://www.avaloncreative.co.uk

8 Re: No boost on 19th January 2016, 11:30 pm

Digitalfaze

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Ive not worked on anything in that area, only trackrod end, yeah it just sort of suddenly happened...after it was re-motd

http://www.avaloncreative.co.uk

9 Re: No boost on 19th January 2016, 11:33 pm

Stu

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You wasn't on boost when it happened?


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10 Re: No boost on 20th January 2016, 7:59 am

johnny gtir

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Would AVCR solinoid cause this ?

11 Re: No boost on 20th January 2016, 8:06 am

Digitalfaze

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Well it only happens on boost, drive fine when not on boost, so only way i can test to see if it still happens is to come onto boost slightly

http://www.avaloncreative.co.uk

12 Re: No boost on 20th January 2016, 8:35 am

Mr B

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You also got this elec power issue so if wiring bad somewhere it could be causing low voltage to fuel pump & avc perhaps !

13 Re: No boost on 20th January 2016, 8:59 am

Digitalfaze

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I done a sensor check on the avcr and the sensors read bost = 1.2v (i dont know what that means).

Im going to put it into an electrician next weekend, only wiring i changed was the fuse on the headlight loom, cut it back and replaced one of the fuse holders which was melted.

http://www.avaloncreative.co.uk

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