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Old 09-24-2012, 03:09 PM   #1
hardhitter_alert
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Default timing belt cam marks don't line up

I took my timing belt covers off just to check that everything was okay and I noticed that the marks on the cam gears do not line up perfectly. Is this just from belt stretch and is in acceptable?

I lined up one side:



and the other side looked like this:

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Old 09-24-2012, 03:14 PM   #2
UK-Wagon
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turn the crank counter clockwise a half turn, then go back. Should line back up just fine, its due to some slack the tensioner is making up. If the belt is new and the marks are light up perfectly it should be fine. If you question it, try and start it up with it the way it is. you dont need the balancer or any of the covers on to check it. Just let it idle, if it runs smooth its probably fine. If it has a rough idle, well its off. You will need to take the belt back off and try again. Off by 1 tooth wont damage anything, itll throw a code for timing over advance bank 2 or bank 2, which ever is off.
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Old 09-24-2012, 03:21 PM   #3
hardhitter_alert
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Here's a pic with the driver's side lined up:



and here is what the passenger's side looks like:

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Old 09-24-2012, 03:22 PM   #4
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Quote:
Originally Posted by UK-Wagon View Post
turn the crank counter clockwise a half turn, then go back. Should line back up just fine, its due to some slack the tensioner is making up. If the belt is new and the marks are light up perfectly it should be fine. If you question it, try and start it up with it the way it is. you dont need the balancer or any of the covers on to check it. Just let it idle, if it runs smooth its probably fine. If it has a rough idle, well its off. You will need to take the belt back off and try again. Off by 1 tooth wont damage anything, itll throw a code for timing over advance bank 2 or bank 2, which ever is off.
This is a 80k mile belt, not new.
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Old 09-24-2012, 03:24 PM   #5
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Looks normal.

The marks will line up when the belt is slack. Once you pull the pin in the tensioner it will make it look like either one side or the other is a half a tooth off.
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Old 09-24-2012, 03:40 PM   #6
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I didn't touch the tensioner though. I just removed the covers on both sides. Or are you saying with the tension off it will line up?
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Old 09-24-2012, 04:03 PM   #7
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It's fine.
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Old 09-24-2012, 04:06 PM   #8
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thanks
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Old 09-24-2012, 04:23 PM   #9
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start it with all the covers off!! dont put it together just to find out it is actually off. Start it up, if its off there will be an obvious misfire at idle speed
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Old 09-24-2012, 04:39 PM   #10
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Quote:
Originally Posted by hardhitter_alert View Post
I didn't touch the tensioner though.
Yeah, but the person who built your motor many thousands of miles ago did.
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Old 09-24-2012, 05:13 PM   #11
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Quote:
Originally Posted by UK-Wagon View Post
start it with all the covers off!! dont put it together just to find out it is actually off. Start it up, if its off there will be an obvious misfire at idle speed
I took the radiator out so I can't really start it. It was running okay before I checked it.
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Old 09-24-2012, 07:05 PM   #12
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If you're afraid it's of, then buy a timing belt kit and go to it.
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Old 09-24-2012, 07:39 PM   #13
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It's close so I was just checking. I already put it back together so I'll change it later.
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Old 09-25-2012, 02:02 PM   #14
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^^^^^^Good Grief!!!!
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Old 09-25-2012, 05:43 PM   #15
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Its fine. It's a half tooth off. If you can figure out a way to adjust a half tooth then...You are fine. Stop worrying.
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Old 09-29-2012, 01:28 PM   #16
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When in doubt, count the teeth, thats what i did and it came out great.
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Old 09-29-2012, 01:32 PM   #17
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80k on the belt and you put it back together when you were 90% of the way through replacing it? WTF!

Kids these days, replace the damned thing!
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Old 09-29-2012, 02:11 PM   #18
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Quote:
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80k on the belt and you put it back together when you were 90% of the way through replacing it? WTF!

Kids these days, replace the damned thing!
Haha it looked fine though. I didn't want to replace the belt, idlers, ect when I don't need to. Trying not to waste money?
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Old 09-29-2012, 04:42 PM   #19
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$300 timing kit vs. what you would pay when your valves contact a piston. I'm not saying it's going to happen, but if it did, I'm willing to bet you'd feel pretty dumb.
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Old 09-29-2012, 05:13 PM   #20
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Quote:
Originally Posted by hardhitter_alert View Post
Haha it looked fine though. I didn't want to replace the belt, idlers, ect when I don't need to. Trying not to waste money?
How is it wasting money? You will have to do it in 25k anyway which means you have to tear it all down again. Hell, I just replaced mine which only had 10k on it while I had the right head off because it's cheap insurance.
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Old 09-29-2012, 05:51 PM   #21
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It's like changing anything out more than it needs to be.. it costs more.
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Old 09-29-2012, 09:13 PM   #22
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Quote:
Originally Posted by Hondaslayer View Post
80k on the belt and you put it back together when you were 90% of the way through replacing it? WTF!

Kids these days, replace the damned thing!
90% of the way through replacing it??? He had the timing belt covers off...that's it. That's 5% of the way, maybe.

I don't know why everybody is harping on replacing the timing belt 25k before schedule when all he had done was pull the covers. That's a 5 minute job...that's nowhere NEAR the effort required to do a full timing belt replacement.
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Old 09-30-2012, 10:25 PM   #23
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^^^^^^^^^^^^Agreed...............a full timing belt job with seals and wtr pump is a good hour and a half


:/
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Old 10-13-2012, 05:34 PM   #24
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Quote:
Originally Posted by hardhitter_alert View Post
I took the radiator out so I can't really start it. It was running okay before I checked it.
and you can run the car without the radiator for 15-20 seconds maybe longer just to hear how it runs without hurting it
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Old 10-15-2012, 09:28 PM   #25
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It was running fine I was just checking.. let's just drop this
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