Dead SHO - Various Codes ***Broken Timing Belt***

[Dr. Tweak]

Like I said, I just got done with this job so if you get stuck on anything just email or whatever. As for the seal, yeah might as well go ahead and change it while you're in there, just make sure you get it all the way in.

burnout

 

[Rockledge]

Well today was the big day. pcorn The Crank Pulley and Crank Bolt I needed to finish the job were delivered by FedEx yesterday (thanks Greg & Adam! ). So I took the afternoon off today so I could button up the SHO and rig up a jumper wire from the battery to the fuel pump feed (I'm having some minor fuel pump circuit problems right now). After praying a little bit to the SHO gods, I then tried firing that Yamaha back up after almost 3 weeks of anticipation...

And YES indeed, it started!! First crank and it was running! thumb

Idled smoothly and sounded great. So I couldn't help myself ...I jumped in and took if for a nice fast ride. I was gentle at first until she was fully warmed up, and then I drove it like a SHO. And it responded great! Even seemed to have a little bit more to give at the higher RPMs... .

So the timing belt crisis is now officially behind me. While it did force me to do the front 60K on my SHO a little bit sooner than I had planned, now that it's done I feel real good about it. thumb

My thanks go out to all who helped. beer

<small>[ January 08, 2004, 11:21 PM: Message edited by: Rockledge ]</small>

 

[masho95]

Rockledge:
As for that brown powdery substance I noticed on the cam sprockets, I'm admittedly still a little concerned about it, but I was looking through somebody elses' pictures of their SHO engine and I saw a picture showing the sprockets which looked very similar to my situation, so I think it's worth posting:

Doesn't look too bad, then, does it?

Now why in the world does that picture look soooo familiar? Can't seem to put my finger on it...

 

[sdpatt]

JDLangevin:
Wow you're crank and everything is in really good shape... ****

Not going near THAT one!

 

[Rockledge]

Wow you're crank and everything is in really good shape...

Oh, I hear that all the time... rofl

 

[gmorrell]

I've said it before and I'll say it again:

When you're turning the crankshaft clockwise to tension the timing belt, you really should have the spark plugs removed from the engine. With the plugs in place, the crankshaft won't turn smoothly, and I've seen the belt jump a tooth or so during the tensioning operation.

When you're tensioning the belt, the locking bolt on the spring loaded tensioner should be loose. Turning the crank several turns clockwise forces all the slack to the tensioner side (left or rear) of the belt, so the spring in the tensioner pulley can soak up the slack. If the spark plugs are in place during this operation, compression bounce will whip the crank around and can cause the belt to lose tension momentarily and ride up over the crank sprocket, jumping time.