Possible Split Boost Diaphragm

Dave Winter · May 18, 2012

My Land Rover 90 has the following symptoms:

Loss of Power
After stopping there is a fast drip of diesel from the outer side of the fuel tank, which stops after about a pint.
There is a thin film of diesel on the rear of the vehicle after a long journey
There is a hiss as I open the fuel cap.

Having looked at other threads, I guess that the Boost Diaphragm may be split which is pressurising the leak off pipe, which is emptying its contents when I stop (and I guess constantly leaking when mobile)

Am I on the right track?

JohnnyDudeUK · May 19, 2012

Sounds plausible. Easy to check too.

barreti · Jun 30, 2012

I've just had a similar problem with my 2.5TD which just turned out to be the petrol cap.
The cap should rattle when you shake it. If it doesn't try replacing it.
This is exactly what cured mine.

Possible Split Boost Diaphragm

Dave Winter

New Member

JohnnyDudeUK

New Member

barreti

Member

Similar threads