XJ XJ8 / XJR ( X308 ) 1997 - 2003

Adjusting the timing

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Old Sep 19, 2012 | 12:24 PM
  #1  
1SmoothJaguar's Avatar
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Default Adjusting the timing

The problem I'm having is that I replace the secondary tensioners using the tie wrap method. I don't think I did a good job because the timing is off. I did not use lock down tool nor did I lock the crankshaft. It started when I remove the cam sprocket to install the tensioner and chain. I thought by using the tie wrap method I wouldn't need to lock the cams. I think that the cams move a little which resulted in bad timming. The car does start but the timing is clearly off. Is it possible to remove the chains, rotate the cams unitl they are flat. Re-install chains and bottom her back up. Or will I have to lock the crankshaft and cams after removing the chain? I know that a few degrees can make a big difference in the way the cat runs. But I'm hopeful that this doesn't require too much head ache. I'm sure the answer is out there

 
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Old Sep 19, 2012 | 12:35 PM
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The tie wrap method does work as long as it was ok before.

If the timing is off you need to do it right of course, and there is only 1 way.

So better to check 1st how you done the job, and why do you think the chain could have jumped a tooth. As when it was tied down, its not easy for that to happen. There may be another issue.

Edit: See the issue now, you said "It started when I remove the cam sprocket"

You should never loosen it, that is the trick why the tie wrap method works, so now you have to do it right I am afraid.
 

Last edited by avos; Sep 19, 2012 at 12:39 PM. Reason: See the issue now...
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Old Sep 19, 2012 | 07:14 PM
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It worked for me, but I didn't remove the sprocket. You going to have to set it at TDC and you a flat ruler.

Get the service manual, that was just posted and follow the directions.

Or

Take it to a indy or dealer to set it correctly.

INDY (Independant Shop) less $$$, Dealer more $$$.

Sorry, I couldn't be more help.
 
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Old Sep 20, 2012 | 01:40 PM
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Thanks Guys for your quick reply. How do I set the cyclinder at TDC? And after doing so do I adjust the cams so that they are flat? She ran well befor I atempted to chain the secondary tensioners. She runs now but acts as if she's skipping. Any and all advice is greatly appreciated.
 
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