Blown Engine?

[Rineheitzgabot]

Bummed like a mafucka. Sitting at a light today after riding for an hour. Suddenly, there’s an odd noise from the bottom left side of my motor, constant grinding, like a supercharger with an occasional click. Start driving to the house (about 2 miles). thought it was transmission related, or primary. Slight loss of power, I think. At about 1.5 miles, backfiring big time, then dies. wont restart. Seems seized up.

2004 Pitbull, 107 S&S.

Would any of you seasoned mechanics/riders have input you could graciously offer?

just looking where to start.

thanks!


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[HMAN]

Pull the primary cover first. Look for the obvious. Perhaps the stator came apart?

 

[Chong]

Clutch, Stator, Primary chain ?

Drain Primary then oils ..

Look for metal .

 

[Mickmorris]

Pull the primary cover first. Look for the obvious. Perhaps the stator came apart?

 

[Mickmorris]

Bummed like a mafucka. Sitting at a light today after riding for an hour. Suddenly, there’s an odd noise from the bottom left side of my motor, constant grinding, like a supercharger with an occasional click. Start driving to the house (about 2 miles). thought it was transmission related, or primary. Slight loss of power, I think. At about 1.5 miles, backfiring big time, then dies. wont restart. Seems seized up.

2004 Pitbull, 107 S&S.

Would any of you seasoned mechanics/riders have input you could graciously offer?

just looking where to start.

thanks!


Sent from my iPhone using Tapatalk

When you say seized up. What exactly are you talking about? In neutral the motor won’t spin over? If you had a failure in the primary or transmission it wouldn’t affect the engine running if the bike is in neutral….,

 

[Rottweiler]

When you say seized up. What exactly are you talking about? In neutral the motor won’t spin over? If you had a failure in the primary or transmission it wouldn’t affect the engine running if the bike is in neutral….,

If the primary chain is locked up it will effect the motor. Asked me how I know.

 

[DynoDave]

Also could be a collapsed lifter. I had that happen @ 21,000 miles. Found out later S&S recommends changing them @ 20,000 miles.

 

[liferider]

I’ve seen a clutch nut come loose and lock up a motor. Pull your primary cover off. This would account for the grinding before it locked up.

 

[Mickmorris]

If the primary chain is locked up it will effect the motor. Asked me how I know.

It was his other comments about backfiring big time that had me scratching my head. That sounds like a engine issue more than drive train.

 

[Sven]

What do the plugs look like? Fastest, easiest thing to look at.

 

[liferider]

Seems like he had time to pull primary cover and plugs by now

 

[Rineheitzgabot]

Thanks all for the feedback. Been working all week, so haven't had time to investigate. Weekend project for sure.

 

[Rineheitzgabot]

Sorry for the delayed response. Interesting turn of events.

-PO Looped a different switch into the circuit for the starter, Locating it near the rider’s crotch because of the awesome reliability of big dogs electrics.

-I didn’t mention in the original post that I had just got done washing the motorcycle.

-What appears to have happened is the water shorted the circuit and caused the started to engage. Hence the whining noise I heard. The whole time I was riding it to my house, the starter was engaged, and apparently heat buildup in the cable caused the connector at the battery to melt. When it melted so much that it completely disconnected the battery, that is when the motorcycle died. Basically, like riding it down the highway, and reaching down and turning off the key.

-it seems as though I just need a starter, battery and some better wiring to the ignition switch.

-thanks again to all of you who continually support helping people troubleshoot problems.


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[TreeGuru]

After I detail my bike and after a ride I use the Walmart Ostrich Feather Duster to take any dust off my bike then cover it till the next ride. I learned the hard way that water around the handlebars will keep you from getting back home. Very little if any water is ever used only when truly necessary on the lower part of the bike. Good Luck..