From:Steve Sartore e-mail:sartore6_2-A-yahoo.com
Subject:RE: RE: 1959 Hummer power delivery problems Date:Fri Jan 13 13:15:12 2017
Response to:21732
It sure seems like a fuel/air mixture problem or maybe
throttle cable to me, but I'm a novice. When I open the
choke while riding it responds like it should. When choke is
closed the throttle response is terrible and full throttle
bogs terribly.

----- ORIGINAL MESSAGE FOLLOWS -----
STEVE;

HAS YOUR ENGINE BEEN REBUILT?? IF SO, HOW LONG AGO.
YOUR DESCRIPTION OF TROUBLE SOUNDS MORE LIKE THE LOWER END
NEEDS ATTENTION.

DUANE TAYLOR


----- ORIGINAL MESSAGE FOLLOWS -----
My Hummer is very sluggish and won't get much over 30mph
downhill (180 lb. rider).
Replaced: fuel hoses, petcock, gas cap, float bowl gasket,
spark plug
Cleaned: gas tank, carb, jets, float, et al

Problem: idles fine but does not deliver crisp power response
when throttle is twisted. Especially bad when in gear.
Very, very sluggish. Runs much better when partially choked.

Questions: which screw on the Tillotson M43B does what? I'm
assuming I have a mixture problem (air/fuel) but I'm really
not experienced enough to know if it isn't something else.
What are standard start-out settings for the screws? I can
see 3 that can be adjusted besides the throttle butterfly
stop screw.

If I can't figure it out my next option is to take it to a
small engine mechanic that specializes in two stroke
motors/carbs. Don't really want to do that just because I'm
stubborn ;)

Thanks in advance.

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