Tuning

[Brett]

Maybe, a vac guage will give you a clearer indication I would have thought.

[Matts-gen2]

Okay, thanks.

[Matts-gen2]

Had a look last night under the bonnet and found that the oil control arm was etching away at a metal bracket :Nono!, creating a deeper groove, so i adjusted that and its now more free.  :yes

AND ....

There was a breather pipe that had come off, on the left of the engine below the inlet manifold and above a heat shield (opposite side to the spark plugs).  The pipe was knackered, so cut a new piece and re-attached it.

NOW  

It sounds smoother on idle, doesn\'t drop at all, seems morte responsive, and idles less irregularly.  :Thumbsup!

Thanks for all your help.

Im glad it was something silly!!!

[Brett]

No problem - sounds like it was the breather for the air control system - any unmetered air getting in will upset your idle - as you have found out!

 Good job on getting the oil control arm sorted too - that little problem has killed a fair number of EGi\'s over the years!

:wave

[Matts-gen2]

Il just keep a good eye on it, check regularly.

Would that breather pipe not being attached cause the spark plugs to go white and crusty ( as the old ones i took out were) ?

All I need now is a strut brace and engine mounts and might take it up Santa pod for a 1/4  mile!

[Brett]

Here you go, this site will give you a bit of info on how various problems can manifest themselves on the spark plugs - http://www.centuryperformance.com/spark2.asp

Are the plugs white and flaky or just white?

But yes, if the engine was getting unmetered air it may have been leaning out, causing excess heat which can bake the plugs, and will lead to more problems than you want to know about!

[Matts-gen2]

Well im glad the idle issue has been sorted 1 day after fitting new plugs!

Matt