Mmb80 not running good

#69
So I was curious as to how it " fixed" itself so I did some thinking and the gas cap had been tooken off right before I rode it. Which relived the pressure because somebody our the vent cap upside down. So I think because the gas tank couldn't get any pressure relived through the gas cap it was having a hard time delivering fuel to the carb. Which us why it was running weird. I did a couple tests on this and my theory seems to be right.
 

I74

Well-Known Member
#70
In my around 50 years tinkering with mechanical stuff, & 40 of those being a Professional mechanic,, I have come to the conclusion,,, that more times than not, when you have something go wrong with the runnability of something,, it is usually a simple / ''sometimes silly'',, overlooked thing. ;)
 
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