Baily dump valve

[Andy]

Hi to all, need advise on dump valve fitted one to day i think it is a single piston, idles better but then wants to conkout then when driving on slowing down it goes to stalls please help!!



Andy

[adzs12]

Do you have a picture of the dump valve as this sounds like the behavour of a diaphram type Either that or its knackered Or you have a vaccum leak somehwere.

[Andy]

Hi
not got pic at mo but its a baily motor sport has a piston with slots round the side with vac hose on top.

if thats any help

Andy

[adzs12]

Sounds like a vaccum leak, where and how have you installed it? what have you teed the vacum line off for the dumpvalve?

[Andy]

Hi
tee off using samco just befor inlet throttle body/housing then vac hose to the side of inlet manifold that blanking nut which threaded in the side

Andy

[adzs12]

Its hard to understand over a forum sometimes mate but my only advice is to check for vacum leaks as this is what it sounds like.

Make sure all your pipes are on tight and split free

[Andy]

Yes
I no its hard to get across but thanks for ur help any way

Andy

[PukkaSilvia]

When the engine is at idle pop the bonnet and cover the dump valve outlets with your hand.If the idle speed picks up or you can feel air leaking then the dump valve is either unsuitable,faulty or needs adjusting?

Generally a dump valve with a plastic inner plate and spring is no good for an s12.

[northerner]

Funny that as my Bailey has just started acting funny. At 70 I could not cruise and had to bury the throttle so I disconencted it and problem solved. Just wondering what type to go for next?

[PukkaSilvia]

Adz had a great dump valve when he bought his car. It cost him 120 quid in 3 days doing local driving

Is the dump valve brand new?