mixture screw?

hi again

i know i ask a lot of questions but…..

what's the right tool to adjust mixture screw?


ta
mark

i think its a 3mm allen key.
 you push it down a small way when you will feel some resistance, just push it down a tad more and turn it.
if the flap gets pushed down too far it will cut out.
 i cant remember which way makes it makes it more or less lean, but im sure you will find out when the engine cuts out or starts to race! but i think its Clockwise for richer, anticlockwise for leaner
 
 hope this helps
 Jon

thanks

mark

Clockwise richens mixture, anti clokwise leans it out. Count the amount of turns you make from the original setting, so you know how much adjustment you've made and have a known point you can return to. Also do not rev the engine with the allen key still inserted or push down to hard on the allen key. Doing either can mess up the resting postion of the sensor plate which is governed by a weedy looking clip inside the box.

Cheers

While we're on the subject, how do you actually do this adjustment, or in  other words is it possible to adjust it correctly without a gas analyser?? I know my mixture is well out, well I suspect it is anyway, and having had a small go myself but had little sucess in making the adjustment correctly (engine still lacks power, and everything else seems in order) I'm thinking about getting a proper gas analyser to see what the back end's actually chucking out as I turn that screw. But is it possible to adjust the mixture wihout having one??

Just curious

Mike.

If your golf is standard - then the Haynes may have a starting point setting - you could probably do a lot worse than set it to that. At least you'd be in the right ballpark.

However - if you've got a racing exhaust etc etc - the setting may not be so appropriate. It would probably be too lean, as you would have less back pressure from the exhaust, so you'd want to richen the mixture.

Your best (safest?) bet is probably to gradully richen the mixture and go for a drive after each (very small) adjustment, with a warm engine naturally. Check the engine response - if it's not picking up very well - i.e. if blipping the throttle isn't producing any response - then you're probably running lean.

Your local garage should be able to do you a gas check for not much money….

If you're determined to DIY these guys;

Garage Equipment Sales | Supplying Vehicle Lifts, MOT Testing, Tyre Shop machines

Do an emissions testing rig for ?2220 upwards…….

Oh - that's a bit steep isn't it  8O

Ali  

Think i might get a garage to do it, probably safer!

As for the gas analyser, I know gunsons produce one that will just give you the co level for about ?60, don't know how accurate it would be though!!

Mike.