In article , Julian
wrote:

"Dave Plowman (News)" wrote in message
...
I've asked on uk.rec.cars.maintenance without much success so fall
back to the experts.;-)

I've got a problem on the old Rover with the one way valve in the
petrol pump failing. It's a fuel injected car so has a high pressure
pump mounted underneath and close to the tank. There is a filter after
the pump and a gauze one inside the tank which I'm told often fails by
falling off. ;-) So what I need is a 1/2" fitting in line filter to go
in the rubber hose between the tank and pump - there's plenty of room
for near any size and shape within the transmission tunnel behind the
pump.

I'd question the wisdom of fitting a filter in the location you suggest.
At the most you don't want any more than a strainer because positive
displacement roller cell (is this correct?) pumps don't like to suck,
and given the low vapour pressure of modern fuel it will cavitate and
make noise.

Indeed - hence my mention of a low pressure one.

But, many manufacturers don't even bother with even a strainer between
tank and pump, so why fit one? I suspect you suspect that there's crap
in the tank? IMHO you should remove the tank and clean it out and
forget about fitting strainers.

I think you'll find all tanks have a gauze filter internally. And I've
read reports that most pump failures are due to dirt entering them. My
tank did have a gauze filter but it's broken off - hence the desire to
replace it with something similar externally. Specialist ones specifically
for this are available but expensive.

Julian

--
*The hardness of the butter is proportional to the softness of the bread *

Dave Plowman London SW
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