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where's the boost gone??

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Old 01 April 2002, 06:20 PM
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tweenierob
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Unhappy

came off the dual carridgeway earlier after about an hours driving and noticed a lack of power but put it down to heat build up, so, i spent a couple of hours fiddling with my front bumper (mesh etc etc) and then took the car out after admiring my handywork, only to find that there was still a lack of power, i had a look at my boost gauge and saw that the boost reading is only peaking at 6-7 psi instead of a normal level of 11 psi, can anyone give me any ideas as to what may have happened??? before i have to go and spend my life savings at the garage!!!!
thanks people,
Rob
Old 01 April 2002, 06:27 PM
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help me
Old 01 April 2002, 06:39 PM
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CallumW
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Cool

Check for leaks between the turbo and the throttle body (maybe a loose pipe or something).

You could be venting charged air to atmosphere which would keep your psi pressure down

Callum
Old 01 April 2002, 06:47 PM
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tried all the hoses, i recall reading something about the boost solenoid reducing boost if it gets blocked???????
cheers for the reply
Rob
Old 01 April 2002, 07:01 PM
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bttt
Old 01 April 2002, 07:05 PM
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Neil Smalley
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Exclamation

Tweenie.

I'm moving this to the drivetrain forum, as this post will get lost in the hubub of general and you'll be able to get a better answer in there.
Old 01 April 2002, 07:08 PM
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tweenierob
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would this restrict boost if its blocked???? thought it would cause overboost???
Thanks Rob
Old 01 April 2002, 07:30 PM
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tweenierob
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can i disconnect the solenoid altogether by running the actuator straight to the manifold?? this would make any solenoid problem show as it would confirm the boost level????
Old 01 April 2002, 07:41 PM
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whats the best way to clean it????
Cheers Rob
Old 01 April 2002, 08:04 PM
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tweenierob
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i have just read the faq and i may be getting a bit overexited for nothing BUT i have just changed the oil and filter and one of the causes of the solenoid block is "after a service" time to get the torch out!!!!!
thanks a lot
Rob
Old 01 April 2002, 08:12 PM
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tweenierob
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Chan, do you know whereabouts the brake cleaner is to be sprayed?? there are a couple of pipes so.......???
Cheers, Rob
Old 01 April 2002, 08:22 PM
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Moles Dad
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Wink

Take each one of the hoses off at both ends, do one at a time so you dont get them muxed ip

Spray the brake cleaner into the hose 'til it runs clear.

I reckon that will do ya, but check your engine oil level.

Good luck,MD.
Old 01 April 2002, 08:24 PM
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thanks md, do you think that this could be the cause of my nightmare then???
Regards, Rob
Old 01 April 2002, 09:45 PM
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will do chan, got my torch gonna have a go now.
i'm gonna check the oil first and then clear out the solenoid, fingers crossed lol
better put my long john's on bit nippy in the garage
Rob
Old 01 April 2002, 10:03 PM
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Lightbulb

I lost ALL boost on the track at Bedford on Saturday, this was accompanied by a rattling noise which has occurred once before (after the track session at Prodrive Live). What we established on Sat was that the link between the wastegate and the acctuator was jamming open when the engine gets hot, letting gasses straight through? Once it had cooled down it was OK. Maybe worth checking that is moving freely.
Old 01 April 2002, 10:58 PM
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just got back from a boot around, cleaned the solenoid out, didnt really notice any dirt but the boost is now back. i'm not sure if it is running as well as before but i think i am just being paranoid now.....
cheers people, almost happy again!!!
Thanks, Rob
i would have gone for a definate yes on the actuator answer bar if it hadnt been the same this morning when i went out first thing.... thanks for all your replies, i have a feeling that this aint the end of my problems though lol
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