Revs not quite right

4.2 V8 32v Naturally Aspirated - 414 bhp
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vroomrs4
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Revs not quite right

Post by vroomrs4 » Sun Mar 19, 2017 1:21 pm

Hi all
When I put my foot down on the excelerater The revs go up as normal but then when I take my foot off the revs hangs there for couple seconds which doesn’t feel right, has anybody else had this problem,
Someone said it could be the clutch switch.
Advice much appreciated.

dizziebug
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Re: Revs not quite right

Post by dizziebug » Sun Mar 19, 2017 1:22 pm

We have the same problem - changed the switched no change changed the MAF sensor its fixed other things but not that

dizziebug
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Re: Revs not quite right

Post by dizziebug » Sun Mar 19, 2017 1:23 pm

Switches sorry

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nij
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Re: Revs not quite right

Post by nij » Sun Mar 19, 2017 2:25 pm

It might be the PCV valve as it will have perished over the years, it's mounted under the carbon fibre RS engine cover.
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dizziebug
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Re: Revs not quite right

Post by dizziebug » Sun Mar 19, 2017 4:10 pm

Good suggestion

vroomrs4
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Re: Revs not quite right

Post by vroomrs4 » Sun Mar 19, 2017 4:22 pm

Great, i'll have a look at that.. Thank you

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Dantheman84
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Re: Revs not quite right

Post by Dantheman84 » Tue Mar 21, 2017 9:56 pm

Yes best way to test pvc is remove you oil filler cap with engine
Running if it bogs done and almost cuts out your valve if definitely faulty hope this helps
RS4 kw v3 full miltek no cats :nogarors4:
Intake spacer deflap stage 2 flat shift launch
Kawasaki ZX10R 197bhp :audibash:

vroomrs4
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Re: Revs not quite right

Post by vroomrs4 » Wed Mar 22, 2017 9:19 pm

Thanks for that tip..

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Dantheman84
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Re: Revs not quite right

Post by Dantheman84 » Wed Mar 22, 2017 9:28 pm

vroomrs4 wrote:
Wed Mar 22, 2017 9:19 pm
Thanks for that tip..
No worries I know this cuz mines has failed last week so in the process of stripping down and carrying out carbon clean too
Also I have ordered spaces for inlet manifold that's ment to
Make a difference too so we will see
RS4 kw v3 full miltek no cats :nogarors4:
Intake spacer deflap stage 2 flat shift launch
Kawasaki ZX10R 197bhp :audibash:

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Stigaream
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Re: Revs not quite right

Post by Stigaream » Sat Jan 06, 2018 8:38 pm

Did you find out what was wrong ?

rs user
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Re: Revs not quite right

Post by rs user » Sun Jan 07, 2018 1:05 am

Dantheman84 wrote:
Tue Mar 21, 2017 9:56 pm
Yes best way to test pvc is remove you oil filler cap with engine
Running if it bogs done and almost cuts out your valve if definitely faulty hope this helps
are you sure? read elsewhere on here that the rs4 b7 still does that with a new valve fitted? .... :beerchug:

Seattle-squash
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Revs not quite right

Post by Seattle-squash » Sun Jan 07, 2018 7:17 am

Based on my experience, yes it still bogs down some but far quicker recovery and although mine did not shut down engine when it failed/was replaced, it almost stalled. So before and after was still noticeable different, upon change.


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