Aussieveedubbers · Tech Talk

Throttle return damper

https://forums.aussieveedubbers.com/threads/44567/throttle-return-damper

76camper ·

Hey guyz,
On my type 4 2l duel carb when using the engine for a bit of braking down a long hill then come to a complete stop and push the clutch in the engine dies. Aparantly there is a throttle return damper to stop this but even after a long hill i would imagine it would still do it. It does it more frequently when its cold. Can anyone suggest what i might be looking to do tuning wise to stop it cutting out after engine braking?

any help or ideas would be great :-)

bus914 ·

if your talking about the Decelarator valve (or dash pot), it may be getting stuck and making the mix too lean. i don't know where to buy one but temporarly you could maybe block the hoses, The emissions will be worse but it may save the engine.

76camper ·

have you got a picture of a dash pot? I think im missing the whole thing. And which hoses are you talking about?

thanx for the reply

bus914 ·

here's a pic of two efi decel valves. if the carby models had them they would look similar. if your engine has ever been rebuilt chanses are it's long gone.

76camper ·

yea, PO did a shit rebuilt, we tidied it up and there not on there. Anyone got one or know where i can get one from?

bus914 ·

if you don't have one it can't be the problem then

76camper ·

yea, we gave the carbies a tune up last night, seems to be fine now... but just idling a bit slow. Thanx for your help... if you do come across one can u pm me

cheers