Rotary
people,
I found the
problem that had been causing intermittent low fuel pressure on one side
and thought others might be interested. There was a small amount of
"crud" in the inlet side of the pump. I'd estimate about 1/2 cc of what
looked like urethane foam dust that had got through the strainer and,
presumably, was shifting around and occasionally causing a minor
blockage.
Since I'd
already obtained a replacement pump I put it in anyway. Interestingly the
original pump, which I got from Tracy, was a Walbro Inline fuel pump-GSL393. This is identical in outward appearance to the
Walbro GSL394 I just replaced it with. The 394 is a slightly higher price
model with slightly better specs. Both models have all metal construction
and 1/8 NPT metal fittings either end. I got mine from Lightning Motorsports.
By the way,
Lightning Motorsports is aptly named - They're unpredictable, unresponsive to
suggestions and on time delivery of their products seems to be about a
million-to-one chance. :)
My 2 c for
the day.
John
(hoping Tracy never gets caller ID)