So why won't it turn?

[locrwln1]

I know I have another thread going on my headgasket, but I've got a problem that kind of needs a quick answer.

I was cleaning the tops of the pistons and needed to rotate the motor to do that. I started out at Top Dead Center. I rotated the motor counter clockwise to get to the other pistons. I went to rotate it back clockwise to bring it back to TDC and it will not turn. I can't continue to turn it counter-clockwise because I have the cam gear wired to the timing chain.

So why won't it turn clockwise?

Thanks for the help.

Jack

 

[Romer]

Is the engine still in the truck? Tcase and tranny in nuetral?

 

[cruiserdan]

You are rotating the crank with the head off and the timing chain in place?..

 

[IdahoDoug]

Slack in the timing chain allow several links to hang down and on rotating they jammed against the block rather than smoothing out in single file to go around the crank pulley? Timing chain tensioner out??

DougM

 

[locrwln1]

Slack in the timing chain allow several links to hang down and on rotating they jammed against the block rather than smoothing out in single file to go around the crank pulley? Timing chain tensioner out??

DougM

I pulled the slack out, because I thought the same thing. The chain tensioner is out.

I will try putting the tranny in neutral. It feels like a mechanical lock up. I didn't even think about the tranny. It turns so easily counter-clockwise.

Dan,

Yes, but we are talking about minor amounts. I haven't even rotated a complete turn or anything. I had to turn it to get the carbon cleaned off of the top of the pistons. I am happy to say that there was very little for 103k miles, I just wanted everything clean when it goes back together.

Thanks,

Jack

 

[landtank]

I doubt it's the tranny as in the current state you could start the engine if it was together. The chain has to have jambed up on you I think.

 

[locrwln1]

I doubt it's the tranny as in the current state you could start the engine if it was together. The chain has to have jambed up on you I think.

Ok, I will give it a shot tomorrow and try and see where that gets me.

Thanks,
Jack

 

[locrwln1]

Well I still don't know what the heck is going on. I pulled the timing chain all the way up and looked to make sure it wasn't bound up and it still won't turn clockwise. I don't know what to do next.

I will mess with it more tomorrow.

Jack

 

[locrwln1]

Well I undid my wire tie, pulled everything tight and continued to turn it counter-clockwise. I rotated it back around to TDC, everything lined back up. Also once I got it back to TDC, it will rotate both directions again, so I don't know what happened, but it's all good now.

Jack

 

[alia176]

Umm, about that 12mm deep socket that you couldn't find....

 

[cruiser88]

Umm, about that 12mm deep socket that you couldn't find....

yea my same thoughts

 

[locrwln1]

Umm, about that 12mm deep socket that you couldn't find....

It is definitely not that, all tools and bolts are acounted for. It rotates fine now in both directions. I'm not sure what happened, but everything is good now.

Also, you shouldn't be giving me a hard time, you could hurt my feeling and I wouldn't be able make the long drive down to your house in October

I am just waiting on the head and injectors to get done and hopefully next weekend everything goes back together. It's a race against time. Wow I feel like one of those car shows on TV where they have a deadline and still have half a car to build.


Later,
Jack