a couple of easy techie questions...

Hi all

Apologies if these have been asked before - I did search first but can't find exactly what I'm looking for!  

* Could someone tell me what the little switch on the dashboard marked '1 2' does?

* The top end of the engine 'ticks' when cold, but stops ticking when warm.  Likely a valve clearance issue (haven't checked them yet) but wondered if I should do something immediately or if it's one of those 'they all do that sir' jobs.

cheers

Rene

1-2 switch changes the mfa function.

ticking when cold is tappets, dont worry about them unless they do it all the time.

Ahhh - no wonder the mysterious '1-2' switch does nothing - I have no MFA stalk / doodad.  Thx for advice on the tappets - is the 'tick' possible to adjust out?  :-)

Depending on your cars age it will more than likley have hydraulic tappets, these 99% of the time make a tick upon start up.

If you have solid tappets then you can shim them.

Like i say nothing to worry about unless its excessive.

Oh and also engine related questions should be posted in the big block section :wink:

ah, right all points noted!  Cheers again

what age is the car? if its hydro tappets then a oil change and some addative should help quieten them down, if they are solid ones use the guide in the how to section and measure the gaps