revs not coming down smoothly or quickly

[marin]

Ive got a problem with my carby, after i used carby cleaner through it a little while ago, the revs wont come down very smoothly or quickly after it has been under load i.e. free reving doesn't do it.
After driving along, i can either back off the throttle, or put the clutch in, and the revs will drop to about 1900, then slowly come down (sometimes notchy) to about 1100 - 1000, then drop to idle. This happens on both LPG and petrol, on petrol i tested with the gas hat not on, and no filter, so just the carby on its own, and it still did it. I have sprayed deoderant around the carby bottom to see if it is sucking from elsewhere, but it doens't seem to be. I have sprayed heaps of RP7 around inside the carby to try and lube up the butterflys. Any thoughts?

marin

[Josh n Kat]

i think there might be something to do with something on the carby that makes the idle dropped down slowly like that, its a stupid emissions thing but i cant remember where it is or how to disarm it.

its like something that holds your throttly open partially when you back right off

[fnqcairns]

The dashpot but it would do it everytime not just under the circumstances outlined above, I always adjust them out of the way, heaps better.

[fnqcairns]

I just reread your post go with Josh's idea and remove/adjust the dash pot (round funny looking thing with a button that contacts the accelerator linkage almost as it closes). From memory they are designed to hold the revs up a few hundred to burn any excess fuel before lowering back to idle, this all happens in 1 second or so. Bloody stupid things and makes driving the car harder also.

cheers

[jessie928]

you have dried out the linkages and bushes on the carbie.
hit teh outside with a good helping of INOX and work it into the bushes and around all the linkages ( solenoid aswell)


Jes

[marin]

i should have siad that i also sprayed excesive amounts of rp7 on the outside linkages and everything that looks like it should move, and nothing.

A mate at work said that there is a small amount of grease on the shafts of the butterfly's (inside), and that i may have cleaned some of that out of 1 of them.... i'm not really up for a carby rebuild atm......

marin