my engine has a rough idle,and now tops out at 42 mph not the usual 68mph.
2007-03-19 14:54:38 · 5 answers · asked by Anonymous in Cars & Transportation ➔ Boats & Boating
It depends on the year of the motor. First i would do a compression check, the cylinders should be within 10 percent of each other. If they are okay I would check the VRO "fuel oil pump" it could be over oiling. You might also try having the engine decarboned. You can do this yourself. Buy a can of Evinrude engine tuner with the hose adaptor, follow the directions on the can and see if that makes a difference.
2007-03-19 15:07:55 · answer #1 · answered by Anonymous · 1⤊ 1⤋
More than likely it's the oil metering pump. This can be caused by an air leak in the fuel lines, a loose hose clamp, a bad anti syphon valve in your fuel tank, bad primer bulb or worst case, a leaky fuel diaphragm on the fuel side of the VRO. Also check for obstructed gas filters , kinks or just plain watered down gas. Something is leaning down the mix. Try using a portable tank and see if it doesn't run better. You are using champion spark plugs aren't you?
2007-03-20 01:57:31 · answer #2 · answered by link 4 · 1⤊ 0⤋
too much oil in the mix
2007-03-19 15:46:55 · answer #3 · answered by sevenout7 4 · 1⤊ 0⤋
2 stroke? Oil mixture is probably too rich. What year is it?
2007-03-19 15:03:07 · answer #4 · answered by know da stuff 4 · 0⤊ 0⤋
Bad gasket / poor seal.
2007-03-19 15:00:23 · answer #5 · answered by Romeo_Alpha X 2 · 0⤊ 3⤋