NEED HELP BAD!

[solman]

Something funny happened.  They got all the new parts installed and started it up.  It did the same exact same thing again.  Here they are trying to blame us and they have it do the  same thing after they (supposed qualified mechanics) worked on it.  Something odd is definitely going on with that motor.

[txbanditrydr]

In a weird way.... that's good news.  Keep us posted please...

[Blade]

Sounds like it needs to have the clutch pulled to isolate whether it is the egine part or something in the transmission area.

[solman]

it is apparently the engine part.  The timing was off again.  It seems that it is jumping a tooth and causing damage.  It sucks because of the time lot, but good in the sense that it is backing him up that something is definitely wrong with the motor.

[Blade]

it is apparently the engine part.  The timing was off again.  It seems that it is jumping a tooth and causing damage.  It sucks because of the time lot, but good in the sense that it is backing him up that something is definitely wrong with the motor.

Wow, I am wondering if the crank gear is bad? The crank sprocket is an integraded part of the crankshaft. But with out seeing the engine, I could not tell you for certain.

Reasons for it chain jumping:

bad cam chain tensioner
bad or missing cam chain guides (must be real bad)
bad or broken gears
worn out cam chain

[solman]

They said that they looked at the bottom end after it happened the second time and couldn't find a problem.  My educated guess seems to head in the direction of a bad cam chain tensioner.  This especially comes to mind considering the low mileage of 1900 miles.

[Blade]

They said that they looked at the bottom end after it happened the second time and couldn't find a problem.  My educated guess seems to head in the direction of a bad cam chain tensioner.  This especially comes to mind considering the low mileage of 1900 miles.

With out seeing though, your guess is as good as anyones.

[solman]

Apparently the problem was the metal piece inside the  spark plug boot fell out and then inside the motor.  I believe that it was million to one chance of something like happening.  It apparently got wedged in one of the cam chain teeth and got stuck there causing it to jump a tooth.

[Blade]

Apparently the problem was the metal piece inside the  spark plug boot fell out and then inside the motor.  I believe that it was million to one chance of something like happening.  It apparently got wedged in one of the cam chain teeth and got stuck there causing it to jump a tooth.

Not saying that can happen, but sure sounds hard to swallow to me. Especially the way the spark plug boots are made. Were the coils removed when the valves were adjusted? I always remove them just so I have more room to work and to get he valve cover out. They never go back in until after the valve cover is back on and the plugs are installed.

[solman]

I personally don't ever remove the coils to do a valve job.  I didn't do the work, so all I got to go on is what he tells me.

[CWO4GUNNER]

I always remove the spark plug boots then blow out or inspect the wells to insure no debris before removing the spark plugs (dirt bike habit) to remove the cover. I have heard of the electrode breaking off, even the porcelain insulators, but I have never heard of a boot falling inside the engine through the spark plug hole. But I suppose there is a first time for everything.

[solman]

I always remove the spark plug boots then blow out or inspect the wells to insure no debris before removing the spark plugs (dirt bike habit) to remove the cover. I have heard of the electrode breaking off, even the porcelain insulators, but I have never heard of a boot falling inside the engine through the spark plug hole. But I suppose there is a first time for everything.

It didn't fall in the sparkplug hole, the valve cover was off for a valve adjustment.