Carburetor bog past 3/4 throttle
Let's read the original post before we make a bunch of off suggestions, ok?
"Larry" wrote in message
...
JamesE wrote in news:1189164531.137067.326800@
19g2000hsx.googlegroups.com:
I must have checked the float level 10 times before I put it back
together. Of course I could be measuring it wrong however. On my
rebuild kit it had a note that said that with four cylinder engines
experiencing rough idle and flooding that it may be necessary to
change to a spring loaded needle. So I changed it from the original
solid needle to the spring needle and then readjusted the float
level. Could this be causing the problem? Also you mentioned that I
could have put in the power valve wrong. What could have gone wrong
with it? I just put the gasket on and screwed it in. Was there
something else I should have done? Thanks, James.
Silly me, but have we checked our fuel pumping capacity? It may simply
be running out of fuel! Fuel pump, fuel filters, clogged lines,
restrictions, clogged tank vent?
Open the tank's inlet at WOT and see if it doesn't speed up...clogged
vent.
Temporarily install an outboard motor primer bulb at the inlet of the
fuel pump for testing. Does it collapse when the throttle is opened?
(vacuum on fuel line). If you pump it by hand when the engine bogs, does
the engine perk up and have more power? (bad fuel pump). With the engine
off, if you pump the bulb, does it pump a few times, then get impossible
to pump (float valve closing off)...or does it continue to pump? (fuel
pump diaphram has a hole in it). Great little piece of test equipment,
primer bulbs. Too bad it's not "legal" to leave them in the line all the
time on inboards.
Let's test the fuel supply before we tear the carb all apart for the 22nd
time, ok?
Larry
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