Engine running rough.... Here we go again !

ApS · 06-27-2010, 02:59 AM

Although I don't have specific experience with these engines, I like MAXUM's answer.

1) To paraphrase MAXUM's response: "coils generally work—or they don't".

2) When fuel is the problem...

A properly-running engine (using gas containing ethanol) has an exhaust odor that is "sickly-sweet".

The exhaust of "over-rich" engines (indicating fouled plugs, sticking float, bad wires) will smell strongly of raw gasoline.

One that is starved for fuel smells like nothing else I can describe. (Burnt fresh-cut grass clippings with a wet cigar thrown in?

)

Also, fuel-starved engines will sputter, cough, and backfire.

06-27-2010, 02:59 AM	#11
ApS Senior Member Join Date: Jan 2005 Location: Florida (Sebring & Keys), Wolfeboro Posts: 6,028 Thanks: 2,285 Thanked 789 Times in 564 Posts	Generally speaking... Although I don't have specific experience with these engines, I like MAXUM's answer. 1) To paraphrase MAXUM's response: "coils generally work—or they don't". 2) When fuel is the problem... A properly-running engine (using gas containing ethanol) has an exhaust odor that is "sickly-sweet". The exhaust of "over-rich" engines (indicating fouled plugs, sticking float, bad wires) will smell strongly of raw gasoline. One that is starved for fuel smells like nothing else I can describe. (Burnt fresh-cut grass clippings with a wet cigar thrown in? ) Also, fuel-starved engines will sputter, cough, and backfire.

The Following User Says Thank You to ApS For This Useful Post:
bigdog (06-27-2010)