fast tickover

[wilkie]

i'm new to this and would be gratefull for your help. The tickover on my van is to fast, I have dropper the adjusting grub screw back on the lever that the accelorator cable goes to with no effect the spring doesn't seem to be returning the lever to the fully closed position. Is this likely to just be an old spring that needs replacing or is that to simple. Any suggestions would be helpfull.

Many thanks

 

[K@rlos]

Providing the carb, timing and everthing is ok the throttle cable may be dragging in the sleeve underneath. when you rev it does it run on or settle back down, and does it only do it when it's hot. Just had that with my webers had an air leak due to a split gasket and it only did it when it was hot

 

[lard]

my bro just fixed this on his westie - iirc he used a carb rebuild kit and now it's running sweet - PM "mattd" and I'm sure he'll fill you in on what was causing it, sounds the same as his (as in it just idled at high revs from cold and stayed that way with the adjuster making no difference)

 

[mattd]

Not a carb expert but I had the same issue, idle was at 2000rpm and the adjust screw was in all he way, I did not even have a grub screw on the accelerator arm, it just rested on the fast idle cam. The reason the arm is not going back may be because the butterfly valve is already fully closed against the carb body, leaving it like this may ultimately damage the carb body when it opens and closes and is not advised.

It could be loads of things but there is a great article here: http://www.vw-resource.com/tune-up.html#problem on fixing up timing / idle issues - this is what I went through to sort my idle out but I had previously bought a rebuild kit, took the whole carb to bits and then used carb cleaner and a can of air spray and put it all together again, did the timing and replaced my fuel pump and all the fuel hoses (had fuel starvation problems at the same time) and now it purrs like a cat at 850.

This post http://forum.earlybay.com/viewtopic.php?f=4&t=14800&hilit=fast+idle has lots of things to look at, has pictures and generally good advice on what to check and some points on the aftermarket 34PICT3 and 009 dizzy.

I know it can be frustrating but my fix was a back to basics, take it all to bits and then follow advice of people that know better to try to put it all together again. For people to really help they will need to know the type of distributor you have, the carb. type and probably a load of other questions, photos always help so post some up.

Good luck.