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Message started by joe H on 06/13/22 at 05:53:19

Title: Bike not turning over
Post by joe H on 06/13/22 at 05:53:19

So, this is going to be a bit long, but I'm starting to run out of ideas- My future son in law has had this bike since the winter, and you guys have been great, we finally got the oil leak stopped, and it had been running great for him till last week, he was riding to work and he said it just died, and he heard grinding noises. I thought the normal stuff, starter, regulator, solenoid, etc. Well the starter spins fine out of the bike, the solenoid clicks but since the starter is spinning I would think that's fine, the combustion release mech is working but the starter just clunks when it's in the bike. I tried roll starting and I couldn't get it to turn over in first or second, but I was thinking that might be normal since roll starting doesn't release the compression and thats a lot of pressure given that it's a 650 with one cyl. I've got a new solenoid coming today, but somehow I don't think that's it, could this engine have just siezed up on the highway without locking up his rear wheel?

Joe

Title: Re: Bike not turning over
Post by verslagen1 on 06/13/22 at 07:10:14

Quote:

he was riding to work and he said it just died, and he heard grinding noises.

Can you turn the crank by hand like you're adjusting the valves?

Title: Re: Bike not turning over
Post by Gary_in_NJ on 06/13/22 at 16:09:39

Are you able to do a leak down test? This sounds a lot like a cam chain failure.

Title: Re: Bike not turning over
Post by justin_o_guy2 on 06/13/22 at 21:34:11

707A7E747F76727B252327170 wrote:

Are you able to do a leak down test? This sounds a lot like a cam chain failure.

Sadly,
How many miles?

Title: Re: Bike not turning over
Post by joe H on 06/14/22 at 07:09:33

I haven't ever done a leak down test, the bike has 20k on her.

Joe

Title: Re: Bike not turning over
Post by ohiomoto on 06/14/22 at 14:27:25

The grinding noise and the apparent seizure are the big concerns.

I would pull the spark plug and see what it can tell you. After that, you might need to pull the clutch cover to make sure the cam chain and tensioner are good. Beyond that, you may have to pull the head, but the sparkplug might tell you all you need to know.

Title: Re: Bike not turning over
Post by joe H on 06/15/22 at 16:42:05

Well, I pulled the clutch plate off, it's not the tensioner. We then took the spark plug out, er uh, well, I should say we pulled out what was left of it. The piston goes up and down, but stops at the same point, then I have to turn the shaft the other way, and the same thing happens. I have a basic understanding of the internal combustion engine, and my very novice opinion is this is not good.

Joe

Title: Re: Bike not turning over
Post by Gary_in_NJ on 06/15/22 at 16:54:23

Dropped a valve. Can you see if the piston looks beat up?

This engine might need significant repairs.

Title: Re: Bike not turning over
Post by joe H on 06/15/22 at 17:32:09

Yeah, I'm thinking what it might need is an engine, drop a new one in and call it a day.

Going to think on it over vacation.

Joe