Question about 1973 Yamaha RD 250
Hi people ' if White smoke is continuously coming out of pipes there are many facts and causes first if you are losing power also it may be piston rings worn (2) if White smoke is jetting out when reving engine, depending on the fact that we are talking about 2 stroke engines then check 2 stroke oil mix is measured out before put in fuel (3) check and test 2stroke oil pump for adjustments and reset (4) most important crank case seals give off symptoms of above .. Poor idleling loss of power & compression . Check these areas out . Hope this helps simon R. :)
Posted on Nov 17, 2013
Check the air/fuel mixture
Posted on Sep 06, 2010
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Posted on Jan 02, 2017
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