QuestionMy 1982 Virago has 22,000k and has never had any oil leaks untill the last month or so. Leaks have begun around the outside of both front and rear cylinder head gaskets next to the crankcase. I have snugged up the 3, (three) allan screws on each side with no success. It has been suggested that there is increased pressure in the crankcase that has to be addressed. Is there a crankcase vent or other vent that may be plugged? Any help will be appreciated.
AnswerDana, I went here to see if I could see anything specific to your question..
http://www.cmsnl.com/yamaha-xv750j-1982_model8890/partslist/ but the Yamaha drawings seem to be lacking in details about how they relieve crankcase pressure, at least from what I could see.
Yes, all engines need crankcase pressure relief and that is usually done from the tops of the cylinder heads on Hondas, but I don't speak Yamaha very well....
I imagine that there must be some large hoses/fittings on the central crankcase, itself, which connect to the air filter box for re-breathing of the fumes. Look for finger sized hoses and see if any are plugged or crimped over from heat or other causes.
Try here: http://www.viragotech.com/
http://www.viragoclassic.com/forum/
http://yamahaclub.com/forums/
Sorry I couldn't be more help on this question.
Bill Silver
aka MrHonda
