Hi Gang,
I will share a fuel related A4 problem and the satisfactory resolution.
I had a condition where the A4 would quit, most often after slowing
down from a run of hours. Very annoying when it happens while
entering a marina or crowded harbour (i.e.: Prideaux Haven,
Desolation Sound). No starting until cools a bit. I went through the
coil troubleshooting, no luck.
It turned out to be my BLACK fuel filter housing installed opposite
the carb, but more importantly the exhaust manifold. It seems the
radiant heat from the exhaust manifold was hot enough to vapour-lock
the fuel supply when I slowed down. I made up an aluminum foil shield
(in the anchorage at Prideaux Haven) and it fixed the fault.
After the cruising season I did a circulating acid clean but still
kept the heat shield in place.
Cheers, Russ
Sweet 35-1
At 09:16 AM 05/08/2014, you wrote:
If I can fix a fuel problem on an A4, anyone can! Totally agree
with the others to clean your fuel tank well (removing it is not as
hard as it appears) and go thru each line to make sure its clean and
tight (no air leakage), change filters, install polishing filter,
electronic ignition, etc. My carb only needed to be adjusted to fix
a shutoff problem that had vexed my husband for years. Vibration
had made the main jet adjusting screw loosen and it let in too much
fuel so the engine would essentially flood itself after some running
time. I adjusted the screw myself and it has run like a little
princess ever since. Knock on wood.
Barbara Hickson Fellers
Flight Risk
C&C 33-1 Charleston, SC
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