martinspragg Posted April 8, 2009 Share Posted April 8, 2009 I've noticed that my oil filler cap on the rocker box keeps popping off. It's not explosive but I will push it back in place and a few days later it's sitting up out of the hole in the rocker box. I took a casual look around the engine bay and I can see no crankcase breathers and I also checked that the filler cap could breath easily. I ran the engine with the cap off and there seems to be no excess smoky vapour coming out. So am I missing a breather tube or could it be blocked? Quote Link to comment Share on other sites More sharing options...
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