Boost leak!
Turbo Mini Forums

Hi all,

Ive got a boost leak on my metro turbo engine,

Any comman places for this? its really high pitched squeele so thinking its gota be a really small leak.


So far checked:
manifold to head
manifold to carb
carb to plenum chamber
actuator
vac lines.

Any other comman ones? its driving me crazy.

Cheers

is the std dump valve in the plenum blocked off?

soapy water in a spray bottle and a squirt up the road?

yeh std dump valve has been welded up, suppose i can have a go with the soapy water but would have thought the heat would dry it up

turbo shagged and blades hitting the housing?

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

nope, had a turbo re-build about 600miles ago and would have thought would make a bit more noise than that. it is defintly a air leak. it also boosts up fine but when it hits 5ish psi you can really hear it

Boost hoses?

In the 13's at last!.. Just

change the hoses like lizzard says, might be a pin hole/rip on one? or just take them all off and put back on. (sometimes this works)

Block off the compressor housing with a cap, then connect the airline to the boost circuit and fill it up, listen for the leak. I have a fitting in the plenum!

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

Have you rebuilt the carb? Spindle seals?

Right, star mag, just tried your idea and it seams to have worked, was leaking between the body of the plenum and the hose takeoff, sealed it just waiting for it to dry now, hopefully thats it.

Cheers

Ah, a sneaky leak!

fingers crossed,