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Help!! No Compression after timing belt change

 
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Old 13 Aug 2016, 01:18 pm
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Default Help!! No Compression after timing belt change

So i completed my timing belt change and upon completion i tried to start it and it seemed like there was no resistance. Its a 2008 2.4 base model. The cam sprokets were set to "2.4 front - up" and the crank was spot on the timing mark. It may have jumped a tooth but thats about it. Will one tooth cause valve damage? I used a compression tester and zero. Any advice as to what i should check?
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Old 13 Aug 2016, 01:21 pm
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Default Re: Help!! No Compression after timing belt change

Zero compression in every cylinder? Did you put your finger on it and see no compression coming out? How was the engine running before you changed the timing belt?

Can you see the camshaft turning when you take off the camshaft sensor?

Are you sure the exhaust cam is not 180 degrees off? The pin holding the camshaft sprocket might have sheared but we need to verify everything first. Was the camshaft sprockets taken off for any reason?

One tooth off will not damage anything.

Why was the timing belt replaced?

CamGearTiming1 with mark.jpg

Was the two red inner marks lined up?

Bottom timing mark.jpg

Did the bottom marks line up?
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Last edited by ptcruisersteve; 13 Aug 2016 at 01:36 pm.
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Old 13 Aug 2016, 01:33 pm
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Default Re: Help!! No Compression after timing belt change

I think its right.. I have zero resistance with the cams in this position. edit: even if it is off a tooth i should at least see some compression..No?
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Last edited by cinikal; 13 Aug 2016 at 01:35 pm. Reason: question
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Old 13 Aug 2016, 01:54 pm
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Default Re: Help!! No Compression after timing belt change

Yes sir! I had all marks lined up.
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Old 13 Aug 2016, 01:58 pm
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Default Re: Help!! No Compression after timing belt change

Quote:
Originally Posted by cinikal View Post
Yes sir! I had all marks lined up.
I need a response on my questions on post #2.

Zero compression in every cylinder? Did you put your finger on it and see no compression coming out? How was the engine running before you changed the timing belt?

Can you see the camshaft turning when you take off the camshaft sensor?

Are you sure the exhaust cam is not 180 degrees off? The pin holding the camshaft sprocket might have sheared but we need to verify everything first. Was the camshaft sprockets taken off for any reason?

Why was the timing belt replaced?
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Old 13 Aug 2016, 02:03 pm
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Default Re: Help!! No Compression after timing belt change

Zero compression in every cylinder? Did you put your finger on it and see no compression coming out? How was the engine running before you changed the timing belt? Zero compression with a compression tester. Car shut off as i was accelerating out of a turn and just died. Broken timing Belt was the outcome. It was split in two when i took it out.

Can you see the camshaft turning when you take off the camshaft sensor?

Are you sure the exhaust cam is not 180 degrees off? The pin holding the camshaft sprocket might have sheared but we need to verify everything first. Was the camshaft sprockets taken off for any reason? sprockets were off whn i did the timing belt /waterpump job!

One tooth off will not damage anything.

Why was the timing belt replaced? It blew coming out of a turn on acceleration on my way to work. left me stranded and towed till i got it apart and saw a split belt.

Last edited by cinikal; 13 Aug 2016 at 02:21 pm.
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Old 13 Aug 2016, 02:44 pm
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Default Re: Help!! No Compression after timing belt change

Can you see the camshaft turning when you take off the camshaft sensor?

sprockets were off when i did the timing belt /waterpump job!
When you put the camshaft sprockets back on did you make sure the pins were put back in? If not you might have the camshaft 180 degrees out.

Did you take the timing belt cover off to see if the belt is still properly attached to the camshafts?

Did you replace the timing belt tensioner?
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Old 13 Aug 2016, 03:01 pm
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Default Re: Help!! No Compression after timing belt change

Can you see the camshaft turning when you take off the camshaft sensor? Yes i already completed the job once and when i was finished i tried to start the car. soounded promising for a literally split second and the it sounded "whiney" and spinning "loosely"

sprockets were off when i did the timing belt /waterpump job!
When you put the camshaft sprockets back on did you make sure the pins were put back in? If not you might have the camshaft 180 degrees out. I will pull the sprockets again to check but i an pretty sure i didnt overlook that

Did you take the timing belt cover off to see if the belt is still properly attached to the camshafts? already broke down the engine again today thinking my timing was off. It was by one tooth. the picture in my last post is after i took the belt off this afternoon.

Did you replace the timing belt tensioner? i replaced everything down to the cam and crank seals.
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Old 14 Aug 2016, 09:54 am
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Default Re: Help!! No Compression after timing belt change

I checked and the cam shaft is spinning. In the picture i posted, with the cams in the position that they are in, i should at least see some sort of compression on cylinder 1 with my compression gauge...yes/no? The timing is being set to the compression stroke so i assume that the valves should be closed at this point.
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Old 14 Aug 2016, 11:17 am
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Default Re: Help!! No Compression after timing belt change

If one of the cam bolts was not tighten down properly it can be loose enough to shear off the pin when you started the engine.

Did you take the camshaft sprockets off to see if the pin was sheared?
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