Befuddled now.

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Oct 02, 2007 13:18:22
GILMGA
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Idle goes to pot after a long drive. Plugs are a little sutty but not bad. Maybe to rich but unless I keep foot on accel rpm drops bad.
Scratching head acts like it is flooding. Timing is great. pertronix points carbs are set at 900 to 1000 rpm when engine is hot.
This happens after a long run temp gets a little above N on gage.??????

Oct 02, 2007 14:22:27
graflexmaster
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This on the "B"?? with HIF's?? Sounds like you might have some gas percolating past the chokes.......

Tell ya what?? hold it up to the screen and let me take a look....heheheh
Michael





Oct 02, 2007 14:24:41
GILMGA
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graflexmaster Wrote:

Quote: "
This on the "B"?? with HIF's?? Sounds like you might have some gas percolating past the chokes.......
Tell ya what?? hold it up to the screen and let me take a look....heheheh
Michael
"


Here what does it look like. How do you diagnose this phenom?

Oct 02, 2007 16:52:12
B-racer
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Sounds like a typical case of fatigued heat anticipators in the carbs! Mixture gets messed up when the engine's hot.

Oct 02, 2007 19:32:47
GILMGA
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B-racer Wrote:

Quote: "
Sounds like a typical case of fatigued heat anticipators in the carbs! Mixture gets messed up when the engine's hot.
"


I never thought of that when I overhauled the carbs. Ill take carbs off and replace.

Oct 03, 2007 14:08:35
GILMGA
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Found the problem but not the cause yet. Front carb overflowing filling up tube to filter causing back pressure. Bad float or need and seat.

Oct 03, 2007 14:16:19
fleshy1
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B-racer Wrote:

Quote: "
Sounds like a typical case of fatigued heat anticipators in the carbs! Mixture gets messed up when the engine's hot.
"


How often does this happen? Can they be tested in some way, say like putting them in hot water?

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