I have just fitted a new l.h. fuel return valve, but the
darn thing appears to leak. From what I can work out, 12 v
is applied to the l.h. solonoid when the r.h. tank is
selected, causing the valve to close and preventing fuel
returning to the l.h. tank. With the car running and the
r.h. tank selected, there is a good flow of fuel back to the
r.h. tank as desired. But there is also a dribble of fuel
to the l.h. tank. I discovered this after a day’s drive
using the r.h. tank all the way and found the l.h.
overflowing when I got home.
Today I removed the new l.h. valve again and checked it out.
With 12 v applied to the terminals, the valve closes so you
can’t blow through it. With 0 v it opens and you can blow
through. So far so good, but when the fuel return line is
connected, r.h. tank selected and the car run, fuel dribbles
out.
And so to my question - It does seem like there might be a
bit of crud in the seat. I’m tempted to blow some
compressed air through the valve. Is this o.k, or is it
likely to damage the valve?
Cheers & thanks–
Bill '80 XJ Ser III 4.2
Brisbane/Qld, Australia
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