Buggies Gone Wild Golf Cart Forum - View Single Post - 1985 G1 Runs fine low speed , high speed run for a mile then fall on its face

GMB74 · 07-30-2010, 04:37 AM

If the exhaust valve is free to close off the exhaust whenever it wants, that could be your problem. It is meant to restrict the exhaust flow at low speeds for smoother running, but if it shuts at high speeds it will choke out the engine. Wire it wide open or remove it and weld up the holes.
A plugged muffler is another possibility. Maybe a mouse nest or nuts floating around in there? I have seen that before.

07-30-2010, 04:37 AM	#2
GMB74 Gone Wild Join Date: Jun 2009 Location: Heluvabump,VT Posts: 623	Re: 1985 G1 Runs fine low speed , high speed run for a mile then fall on its face If the exhaust valve is free to close off the exhaust whenever it wants, that could be your problem. It is meant to restrict the exhaust flow at low speeds for smoother running, but if it shuts at high speeds it will choke out the engine. Wire it wide open or remove it and weld up the holes. A plugged muffler is another possibility. Maybe a mouse nest or nuts floating around in there? I have seen that before.