New timing set
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Mountain Pass
Joined: Aug 2003
Posts: 147
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From: Georgia
New timing set
Hope someone has done this before, couldn't find anything doing a search. Followed the procedure for installing the timing chains and gears to-the-letter twice and come up with the same results both times. After installing and rotating the crank about 10-15 revolutions, once the timing mark on the crank gets close to the bright colored single link on the chain, I am 1 link off on the crank and both cam sprockets. (see pics) Anyone have any idea as to what I am doing wrong? Unless I am missing something the timing marks should come back to alignment. I know the pdf is for 2004, but it reads the same as my Haynes manual.
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Joined: Jul 2002
Posts: 42,561
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From: Long Island USA
Very odd - truth be told, the timing is correct. It's just that the timing chain is two teeth "retarded" on both the crank and the cam sprockets. (At least, for the passenger-side cam, I can't tell if the driver's side is correct at the crank).
If you remove the tensioners, can't you move the chain a few teeth? Like I said, it's appears to be timed right, it's just that the marks are two teeth off.
If you remove the tensioners, can't you move the chain a few teeth? Like I said, it's appears to be timed right, it's just that the marks are two teeth off.
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Mountain Pass
Joined: Aug 2003
Posts: 147
Likes: 0
From: Georgia
Very odd - truth be told, the timing is correct. It's just that the timing chain is two teeth "retarded" on both the crank and the cam sprockets. (At least, for the passenger-side cam, I can't tell if the driver's side is correct at the crank).
If you remove the tensioners, can't you move the chain a few teeth? Like I said, it's appears to be timed right, it's just that the marks are two teeth off.
If you remove the tensioners, can't you move the chain a few teeth? Like I said, it's appears to be timed right, it's just that the marks are two teeth off.
Ken
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Joined: Apr 2006
Posts: 1,477
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From: NAMPA, ID.
This is interesting as I've experienced this before on other engines. Even though your marks were correct initially, they appear to "off" every revolution. This is not the case. The way I double checked this after noticing the same thing you did was to count the links in between the marks. Even though your blue or copper marks no longer line up with the dots, there are still 29 full links in between marks. The way I understand this in my feeble mind is that if an engine had say 3 feet in between the crankshaft and the overhead camshaft, it would of course not line up every revolution. It's weird that most old school v-8's do in fact line up every other revolution. Good luck.
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urif250
1973 - 1979 F-100 & Larger F-Series Trucks
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Nov 30, 2002 02:23 PM
