Question about Motorcycles
Get one heat range higher plug for your motorcycle. If it is fouling, Im guessing this is a high mile motorcycle. You dont say anything about make, model, year or miles.
Posted on Dec 06, 2012
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Posted on Jan 02, 2017
You definitely need to change the oil mixture to at least 40:1, use a good grade of 2 stroke oil. You do NOT need to return the bike. I'd highly recommend using an NGK B7EV spark plug. A hotter plug will stop the premature fouling. I would not recommend you decrease the oil to 50:1 because you are essentially robbing the engine from adequate oiling for the piston, KIPPS valves and the bearings. The hotter plug will make a huge difference but remember if he gets to the point where he is able to ride the bike to it's potential he will need to run the cooler plug, B8EV or B9EV. You can also use a cheaper plug in the same heat range, B7ES or B8ES. Those plugs should cost about $1.25 ea. and are an affordable cost of running the bike. It's not uncommon to replace a spark plug frequently, it's the nature of the 2 stroke engine.
Posted on Dec 08, 2008
SOURCE: xn 85 fouling spark plugs
i have a xn 85 model 86 and it was in a garash for a many years so the rubber of the valve seal are wet and no stop the oil, in my case was the 3rd cilinder i change the injector and continued leak the 3rd. when i change the seals tha problem sold good.......................have a good repaire.
Posted on Jan 06, 2009
It sounds like the previous owner liked to tinker with the carb. I would pull the carb, CLEAN IT and check what size jets are in it. #115 is the stock main jet. #38 was the stock slow speed jet used that year. In the center of the slide, check where the clip is set on the needle. Position the clip mid- range of adjustment. If the bike bogs when you open the throttle, move the clip down one notch. Two notches may be needed but start with one. Be sure the owner has not lost the needle jet holder, part #16 on the parts diagram I am sending you to. Both the air and idle screws start at one & one half turns. Look at the tips of the adjusters. If they have a "ring" mark or depression mark where they were screwed in too tightly, then the screw(s) and jets should be replaced. These are adjusters and not really a screw. Seat them LIGHTLY then come out 1.5 turns.
Go to the site below where you can see a parts diagram for your specific bike. You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part, the part is not in stock. www.babbittsonline.com/pages/parts/viewbybrandand/parts.aspx Go to the "CARBURETORS" tab to see the assembly. There is a slight chance the OHC may be one tooth out of proper position. We will check that after the carb has been put in order and tested.
I hope you will be able to rate this answer as "Very Helpful". Thanks
Posted on Jun 15, 2009
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