diesel

[dunerider3]

What would make a 2 stroke to diesel during break in ? or just to diesel ?

[rustyATV]

Just a couple of ideas off the top of my head:

A weak ground

A too hot of a spark plug

Maybe fuel with a much lower octane rating than needed (i.e. running 87 in a motor built for 110)




How long is it running before it diesels? Does it have a chance to warm up, or does it diesel when the engine's still cold/cool?

[dunerider3]

i have had this bike for 20 years allways have done the top end work myself lower end by ct. last time i did the top end is the one and only time it has ever diesel on me, but ever since it does not run the same. falls way off ontop end . stumped??

[86 Quad R]

help me to understand better as to what you mean by "diesel". :cool:

[dunerider3]

I was told "diesel' in a 2 stock is when it revs eradic. this is what happend to me on the break in . not even riding it , just running the engine on the second heat cycle. the motor would not stop even after pulling the plug wire. had to put in gear to kill motor

[86 Quad R]

that is a symtom of an air leak. did ya perform a leak down test on the engine prior to install?

[dunerider3]

no did not do a leak down test. how do you perform that test ?

[GOTFEAR]

check your base gasket and intake gasket may be sucking air try spraying carb cleaner around this area and see if the motor reeves up

[86 Quad R]

Originally posted by dunerider3
no did not do a leak down test. how do you perform that test ?

follow THIS (http://www.exriders.com/vbb/showthread.php?s=&postid=2562163#post2562163) link :cool:

[Creech52]

sort off topic, but Im pretty sure diesel is the same as after run, or when u shut something off it sputters awhile before totally stopping. Which I thought rustyATV was talking about with the issues because dieseling is due to hot spots in the cylinder.