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Running lean at idle

Posted: Tue Jul 17, 2012 12:36 pm
by paulW
Ok, since fixing manifold gasket and fitting a new working wideband (plx this time :mrgreen: )

I am running lean at idle. :cry:

rest of rev range is ok, but at idle it starts off ok and then gradually gets leaner and leaner, until it starts to sound rough.

any ideas? I am guessing MAF sensor? which i may have a spare if i can locate it.

Re: Running lean at idle

Posted: Tue Jul 17, 2012 12:40 pm
by paulW
suppose it helps if hose is actually attached to inlet plenum :oops:

Re: Running lean at idle

Posted: Tue Jul 17, 2012 12:51 pm
by Dominic
Glad I'm not the only one who does these things! :oops:

Re: Running lean at idle

Posted: Tue Jul 17, 2012 12:51 pm
by campbell
Don't be too hard on yourself, Paul ;-)

Re: Running lean at idle

Posted: Tue Jul 17, 2012 12:53 pm
by paulW
nice rich cold idle that goes to 14.5 when warm...guess that is that fixed then. :mrgreen:

Re: Running lean at idle

Posted: Tue Jul 17, 2012 4:16 pm
by dirkpitt
:damnfunny ......dont mention it... :thumbsup

Re: Running lean at idle

Posted: Thu Aug 23, 2012 1:10 pm
by KingK_series
Dominic wrote:Glad I'm not the only one who does these things! :oops:

You have brilliant company on seloc...... I really wouldn't worry, and the best bit is you will never have that problem again!

Re: Running lean at idle

Posted: Thu Aug 23, 2012 1:42 pm
by robin
paulW wrote: any ideas? I am guessing MAF sensor? which i may have a spare if i can locate it.
For reference, the K doesn't have a MAF it has a MAP; on S1 it's built into the MEMS1.9 ECU; in S2 and VVC engines it's built into a combined pressure/inlet temperature sensor that's located on the right hand (drivers) end of the inlet manifold.

Cheers,
Robin

Re: Running lean at idle

Posted: Thu Aug 23, 2012 1:55 pm
by KingK_series
robin wrote:
paulW wrote: any ideas? I am guessing MAF sensor? which i may have a spare if i can locate it.
For reference, the K doesn't have a MAF it has a MAP; on S1 it's built into the MEMS1.9 ECU; in S2 and VVC engines it's built into a combined pressure/inlet temperature sensor that's located on the right hand (drivers) end of the inlet manifold.

Cheers,
Robin

Yes and they are generally very reliable, I have known 1 go down so far, completely threw the running and made the engine very difficult to start.