Topic: Who wants to guess what broke in my second engine?

[dave500]

have the valves just got that oily/ sawdusty gunk on the seats and a simple clean and relap will fix it?

[camelman]

The valves were fine with only a slight carbon coating which was probably from the prior 4k miles I put on the head on the prior engine (I ported this head  for the engine that failed a month ago, so I swapped it onto this engine when I installed it).

I started it up, and it runs well.  I checked the oil and found that it was super low on oil, which is strange because I only rode it 200 miles.  I filled it up, and will keep a close eye on it.  I wonder if this whole issue started from low oil... the oil light never came on though.  Super lucky I guess.  By the way, Hush, I'm fresh out of chocolate fish.  Otherwise, I'd mail you some ASAP.  ;-)

Thanks everyone, and I'll make sure to post if this turns into a recurring problem.  I did notice some white vapor out of the exhaust again when I started it.  I'm hoping it is just water vapor.  However, if it is fuel...  Well, I'll cross that bridge when I get to it.

Camelman

[camelman]

Just to make it official, the actual cause was junk stuck between the valves and the seats.  That option had the highest total of 8 votes, although it also said the valves were burnt... which they weren't.  One interesting tidbit, the exhaust valves had no grit caught in them, only the intakes.

The second highest vote count was for the cavalry... I like the way you guys think.

The third highest vote... well, who really cares about the third highest vote.

;-)

Camelman