Here is a riddle for you - Sled won't start

[double a ron]

I had to weld up a spot on my muffler that had cracked. After welding I installed the muffler, started the sled, put my hand over the muffler breifly to see if there were any leaks. The engine coughed a couple times due to exhaust backing up, took my hand off, sled was still running, turned it off.

But now it wont' start. Won't even fire. Did I damage something, could this have fouled up the plugs bad enough to not even fire?

Any thoughts?

Just cranks and cranks. no codes.

 

[yukon yamaha]

If it backfired maybe it is a fouled plug?

 

[pro116]

Usually the motor will stumble and backfire if you foul a plug.If it won't fire you may have fouled more then one plug.I would try that first.

 

[sofunkingcool]

Prob. a plug. But did you disconnect the battery when you were welding? You can fry everything if your not careful.

 

[double a ron]

The muffler was removed.^

It was the plugs. I haven't fouled any plugs in a 4 stroke yet. Used to my old 2-stroke, you could at least get it to fire and choke a bit, but I had nothing, not a single fire so I thought it was something else.

3 new plugs and away we go.

Thanks....a

 

[billymx815]

AWESOME that its fixed and not anything major. Happy trails to you

 

[Daranello]

Better Q. How, why and where was the crack?

 

[2008FxNytro]

Another question. was the sled warmed up when you put your hand over the muffler? (red light on the dash off).