Engine coughing help please
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New User
Joined: Dec 2008
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Engine coughing help please
hi i have a 77 highboy 400 engine, at random times when i step on the gas the engine will cough, stutter miss however u describe it, then i have to ease of the gas and than it will be ok. sometimes its not there but on to many occasions it will stutter, any ideas? otherwise the engine runs fine
Postmaster
Joined: Aug 2005
Posts: 2,760
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From: Gadsden Purchase
Did you get any drops of water in the fuel bowl by any chance?
It can form a clear jelly like stuff that's hard to see in the fuel bowl.
BTDT :)
Seems to me it's a lean condition that causes back firing through the
carburetor when you mash the pedal down?
Alvin in AZ
It can form a clear jelly like stuff that's hard to see in the fuel bowl.
BTDT :)
Seems to me it's a lean condition that causes back firing through the
carburetor when you mash the pedal down?
Alvin in AZ
New User
Joined: Mar 2009
Posts: 16
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Clean the feul system, a lot of my bikes with older carbs, do get like sludged up. Same with the tank. Installing a better filter, cleaning the carbs, and inspecting it for crap is one less thing you gotta worry about anyways and should be done! also its pretty cheap...
Postmaster
Joined: Aug 2005
Posts: 2,760
Likes: 8
From: Gadsden Purchase
What the heck are we talking about anyway? :/
2100?
2150?
Holley?
EB/Carter?
If it's a 2100 2150 they tend to be lean in the low speed circuit and are famous
for a stumble because of it. I had real good luck richening the low speed circuit
on friend's pickups from work etc back-when. FiNgured it out messing with
my 2100 and so applied it to any body's 2100/2150 that was game.
Much later fiNgured out the differences in the emulsion tubes too. The good
ones have holes up two sides, the crummy ones have holes only near the top
on four sides...
http://www.panix.com/~alvinj/file12/booster.jpg
Alvin in AZ
2100?
2150?
Holley?
EB/Carter?
If it's a 2100 2150 they tend to be lean in the low speed circuit and are famous
for a stumble because of it. I had real good luck richening the low speed circuit
on friend's pickups from work etc back-when. FiNgured it out messing with
my 2100 and so applied it to any body's 2100/2150 that was game.
Much later fiNgured out the differences in the emulsion tubes too. The good
ones have holes up two sides, the crummy ones have holes only near the top
on four sides...
http://www.panix.com/~alvinj/file12/booster.jpg
Alvin in AZ
