Hey everyone, I have a ke70E with a 4kc engine. Attached to the 4kc is a two barrel webber carbie. So the problem is when increase the throttle slowly the revs go up normally but when you plant the foot the revs drecrease severely then increase like normal. So yeah just wunderin if anyone knows whats goin on. Thanks.

the carburettor is too big for the engine

secondary progression jet may be too big/ small

it's up by the top plate, there's one for each barrel

i'd say to rich. most webers are jetted to big for a k series. i would assume it is a 32/36 DGV as well.

 

usually if it is to rich and you plant your foot it will bog down, if you then instantly lift off the engine will pick up.

i'd say to rich. most webers are jetted to big for a k series. i would assume it is a 32/36 DGV as well.

 

usually if it is to rich and you plant your foot it will bog down, if you then instantly lift off the engine will pick up.

 

I'm a bit late

but

couldnt it be the vac on the advance on the dizzy? either not connected or not working properly?

have u solved the problem yet zeel 101?