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Loads of revs

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Old Mar 2, 2013 | 10:47 AM
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Default Loads of revs

Sorting out the project trackshed this morning,got it started last week but tidying a few jobs this morning.fitted exhaust and went to run up to temp for the first timeno throttle cable fitted yet
Revs are mad high and have done the following to try and sort

Changed blue temp sender back of head
Disconnected iscv
Disconnected tps
Checked for inlet manifold leaks
No change , if I blip the throttle it drops to idle for a sec then revs up again to prob 2/3k

Unknown chip but for greens/3bar etc

Base idle screw in throttle body,is there a set position as in screw out fully then in five turns or all in and five out....

Cheers for any help...
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Old Mar 2, 2013 | 11:04 AM
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It's either got an air leak or the idle valve is jammed open!

Martin
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Old Mar 2, 2013 | 11:43 AM
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Air leak or jamed throttle,, how high is revs ?

Spray carb cleaner so find it
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Old Mar 2, 2013 | 01:42 PM
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Throttle is free , revs a out 2/3k I'd say , no rev counter yet

Wd40 to find air leak ???
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Old Mar 2, 2013 | 02:37 PM
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could it be your tps rob?
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Old Mar 2, 2013 | 03:13 PM
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Plugged that out to check james
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Old Mar 2, 2013 | 07:15 PM
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As said,tps dirty throttle body/butterfly or air leak imo.
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Old Mar 3, 2013 | 12:38 PM
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Just remembered when I had throttle body on bench and fitting the tps I read here about adjusting/setting a preload , might have stop set in the positive area of sweep , will try and release tps in situ but hard if I remember ...
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Old Mar 3, 2013 | 03:50 PM
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Originally Posted by Rob Virgo
Just remembered when I had throttle body on bench and fitting the tps I read here about adjusting/setting a preload , might have stop set in the positive area of sweep , will try and release tps in situ but hard if I remember ...
The TPS could affect idle BUT only with the information it is giving which then in controls the ISCV. The fact this is disconnected means there is an air leak or as I say the idle valve is open.

Yes WD40 can be used to determine the source of this, by liberally spraying around manifold etc with engine running if you then hear a change in idle, this is where the leak is.

Martin
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Old Mar 3, 2013 | 04:51 PM
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Cheers mart
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Old Mar 3, 2013 | 04:53 PM
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Is the closed fully position for idle adjustment all the way in as i presume
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Old Mar 5, 2013 | 05:51 PM
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The more you tighten the screw the lower the idle...

Martin
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Old Mar 6, 2013 | 12:37 AM
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Two jobs first then , screw in adjust or fully and then release tps and set base zero position

Onto manifold gasket after that tho
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