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Old 06-01-2017, 02:47 PM   #1
ace_cobra
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Default Astra Timing marks

Hello all,
New to the forum, and new to Astra's. I just changed the timing belt on mine, followed Astra La Vistas post, used a homemade cam tool and locked the flywheel at #1 TDC. The car has a clatter at 1800-2100 RPM, and I am trying to diagnose it. I am waiting on a new solenoid to swap out, but my question is about the camshaft timing marks. When I got everything lined up my 2 camshaft dimples were perfectly in line with each other, not off at all. Is this technically wrong? Everything I have seen seems to have them skewed a bit. I have a P0017 which leads me to believe this isnt right. I ran the engine for a half hour, and checked the timing again, and with it at 1 TDC the marks are still bang on across from each other. Advise?
Thanks in advance

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Old 06-01-2017, 03:02 PM   #2
billysvue
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Default Re: Astra Timing marks

Quote:
Originally Posted by ace_cobra View Post
The car has a clatter at 1800-2100 RPM
Why did you change the belt? It was time per the schedule or there was a problem?
Did it clatter before?

Clatter is under load or just high idle?

Have you used a section of heater hose as a stethoscope to "listen" your way around the engine bay to try to locate the noise?

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Old 06-01-2017, 05:04 PM   #3
ace_cobra
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Default Re: Astra Timing marks

I changed the belt because it was due. The previous owner had never changed it at 180,000km. The noise happens under load and no load. As of tonight I swapped solenoids and the original exhaust solenoid in the intake's place and a new solenoid in the exhausts place seems to have made it happier. I am still getting P0017, so I still am wondering about those timing marks.

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Old 06-02-2017, 12:02 AM   #4
FieroAlex
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Default Re: Astra Timing marks

My timing marks were also slightly off as per the how to in these forums

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Old 06-02-2017, 08:58 AM   #5
ace_cobra
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Default Re: Astra Timing marks

Quote:
Originally Posted by billysvue View Post

Have you used a section of heater hose as a stethoscope to "listen" your way around the engine bay to try to locate the noise?
Yes I used a screwdriver. It is definately coming from the cam sprocket area. I just can't decipher which one it is. Is is quieter now with a new solenoid but I am still getting P0017. Has anyone done their timing belt and ended up with the marks straight aligned like mine?

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Old 06-04-2017, 07:54 PM   #6
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Default Re: Astra Timing marks



It looks like their is 16 belt teeth between each tooth that is just above the top rivet.
You can also remove the Cam cover and align the groves in the back end of the camshafts while engine is at TDC.

Remove the plug under the AC compressor to align TDC.

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Old 06-05-2017, 10:13 AM   #7
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Default Re: Astra Timing marks

I will have a look at that when I get home. I reinstalled my timing belt with a better homemade cam lock tool and it went much smoother, plus I have an offset on the dimples now. I will check and see how many teeth are on the belt from top-top

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Old 06-10-2017, 09:31 PM   #8
Astra08
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Default Re: Astra Timing marks

I'd be curious to see if this fixes it for you. The camshaft phaser might also need replacing if it does not.

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Old 06-18-2017, 05:37 PM   #9
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Default Re: Astra Timing marks

I took the belt back off, turns out the tensioner was bad, replaced and the noise went away. So if you have the clacking noise issue, replace the tensioner. Mine was new, and was bad out of the box

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Old 06-20-2017, 11:46 AM   #10
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Default Re: Astra Timing marks

Ace,

Did your P0017 code go away? If so what was the issue?

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