whoopty

when my 4x4 boosts up it gets a juddery sort of missfire and it keeps poping vaccum pipes off, does anyone know what can cause this

tabetha

How much boost are you running ?
If the pipes keep coming off are they doing this only when you hit boost or all the time even off boost ?
At the end of the day if they are coming off, they are either loose, or there is too much pressure there, unless they are a loose fit /
tabetha

NEEDFORSPEED

get some tie wraps round them or smaller vac hose or somethin! shouldnt blow off even under big boost

steventoon

I had this misfire on an old Cosworth because of wrong spark plugs and boost set too high.

whoopty

it is a standerd car with a t34 and im sure it is runnig standrd boost

iv had a look in the air box and the k&n has been riped i half

steventoon

amal valve ? apparently my last car was over boosting due to this being knackered. not sure what it does but simon at woodford said it did something to control the boost.

whoopty

might be it did it a few times then sorted itself out and now its doing worse
might try another one on it.
more money

tabetha

Ripped the air filter in half, jesus you don't do things by half!!
Defo want to get it fixed before mr engine goes bang, I would try a new amal too.
tabetha