Question about 1983 Yamaha XJ 650
Posted by Anonymous on
Hi, Anonymous for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. If necessary, transport your bike to the dealer or shop and have a professional technician take it for a test drive, if it is in running condition, and give you a written estimate of repairs and answer any specific questions you may have about your problem. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
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Posted on Jun 20, 2016
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Posted on Jan 02, 2017
xj650(uk) and xj650j
inlet 0.16 - 0.20mm
exhaust 0.16 - 0.20
all other models
inlet 0.11 - 0.15mm
exhaust 0.16 - 0.20mm
set when cold
Posted on Feb 01, 2009
If you are saying the bike still continues to want to run, (rough running I am sure ), after the key is shut off then the engine is "dieseling". Carbon buildup on the piston / valves/ cylinder head is getting red hot from running. The hot spot(s) serve to ignite the fuel much the same as the spark plugs would. Burn only premium gas, be sure the cylinder is clean and not caked with mud or such, and change to a colder spark plug like NGK BP-8es or BP-9es ( BP-7es is the stock plug ). This may keep the engine cooler and stop the problem. The only other way is to pull the head then de-carbon it and the pistons. While the head is off, re-seat the valves using valve grinding compound. Check out Babbitts for parts. Go to www.babbittsonline.com/parts/viewbybrand/parts.aspx Please rate my answer.
Posted on Feb 25, 2010
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