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Posted by: shepherdblake
I'm guessing that it's oil in the gas, rich jetting or very worn rings.
Posted by: HR
sounds like it's running WAY rich. try some diferant jets. or hotter plug maybe.
HR.
Posted by: HR
are the plugs oil fouling? your not runnin premix are you? when it does run what color of smoke out the exaust is there if any.? blue grey or black? white? i need to know. and how well does it run when it runs? good lots of power? or realy sluggish.? what diferant plugs have you tryed? if any?
HR.
Posted by: HR
yes a puzzeler this is.....
what i would do is make sure it's getting good spark. might have to cut the plug wire and screw the cap back on. the cap where it goes onto the plug will unscrew. then cut then rescrew it on...
as for the pip getting WAY hot. your right in thinking it's lean. but also timming will to this too. i doun't know how to adjust the timing on y0our atv but you might look into that. if it's advanced to much then it'll run hot. (old trick i do in my chevy for better gas milage, it's at 16 deg but i live at 7000 ft too)
i'dd say try and find a way to compression test it. and test the stator. if it runs good for a while then runs worst later the stator might be going bad and weekining the spark makeing it foul... other than that.... i dunno.
fouled plug and red hot pipe... got me...
HR.
Posted by: stinkfist
Hello my friend has a 1998 artic cat 454 that has had a plug fowling problem since he has had it.It has only 400 miles on it and he has replaced the carberator with a brand new one.It only run's for a few minutes before it will fowl a plug you can ride it sometime for a long time but then when you stop and try starting it again it won't start because the plug is fowled.What else can he try.It is all stock except for a K/N air filter.Thanks
Posted by: stinkfist
It has a brand new carb setup by the factory tech for the ATV.It should have the right jets I told them I had a K/N Air filter.The old carb I tried at least ten different jet setting with it nothing helped.
Posted by: stinkfist
It does not smoke at least none that is noticable.I have never ran pre mix just strait gas.I have looked at the plug it smells of gas and is black.I have only used one kind of plug I think NGK.Could it be not getting enough spark?What kind of plug should I try.What about compression I have not done a test because I don't have a compresion tester that will reach down inside it go's deep where the plug is.It seams to run fine but I noticed that the header pipe gets red hot at night when I am pushing snow or using it hard but that would mean lean I thought and it is not lean.It is very confusing the things it does.
Posted by: stinkfist
Well thanks I will try those things and let you know.
