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Old 08-15-2016, 08:03 PM   #1
 
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Default This timing chain takes the cake

My friends 2008 Suzuki XL7 timing chain has stretched. I guess its a common problem. This thing has 3 timing chains! What a pain this will be.

He said when he stopped to get gas he turned the car off. When he was done fueling up he went to start the car but got nothing it was just cranking over.
He found out the timing chain went on him. He pulled off the valve cover to inspect and found a roller rocker fell off and the one next to it was loose. One chain was completely slack but the others were not, I do think that they skipped a tooth though.

What are the odds that the pistons hit the valves? If they did how do we find out? This motor is completely foreign to me and I don't even want to touch it. Ill probably screw something up. I don't consider myself a great mechanic I just know basic stuff. Also he checked with a few shops and they don't want to touch it.

Anyone familiar with this motor? What are the best options here? Thanks
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Old 08-15-2016, 08:05 PM   #2
 
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If it just jumped a tooth or two, it's unlikely that the valves met the pistons.
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Old 08-15-2016, 08:07 PM   #3
 
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Even if the chain on the left pictured in that diagram is completely slack and the rocker fell off?
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Old 08-15-2016, 08:14 PM   #4
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3 chains isn't as uncommon as one would think.

All manufacturers need to get rid of chains and go to gears.
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Old 08-15-2016, 08:42 PM   #5
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Originally Posted by HulkSmash View Post
Even if the chain on the left pictured in that diagram is completely slack and the rocker fell off?
rocker under the cam? if it is then likely one valve is hanging down. the lash asjusters wouldn't let it get loose enough even with the plunger fully collapsed
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Old 08-15-2016, 08:52 PM   #6
 
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Yes the rockers are under the cam. I guess we will just get new timing chains and replace the tensioners. Hopefully that's all that it needs.
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Old 08-15-2016, 08:58 PM   #7
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You likely have a bent valve see if you can slide The Rocker under there and compare how high the nose sits on the valve you might see it hanging down in which case you have to pull the heads
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Old 08-15-2016, 10:03 PM   #8
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Looks fun. When I looked at Suzuki's I did see that valve lash adjustments were common every 30k
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Old 08-16-2016, 07:12 AM   #9
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looks like more than one tooth jump is bending valves time...

if your lucky and it is just the one chain, you might just have only the one valve bent
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Old 08-16-2016, 08:05 AM   #10
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that's a GM 3.6l isn't it? sure as shit looks like it from the timing setup.

a "loose rocker"....you sure it's not from a bent to fuck valve? i say pull it down and find out. weird that it was running fine then wouldn't restart. how long was it throwing a code for the timing? did he run it out of oil?


these aren't horrible to do. you will need cam lock tools to line up and lock in the camshafts while the chains are off, otherwise it's just time consuming.
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Old 08-16-2016, 06:41 PM   #11
 
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that's a GM 3.6l isn't it? sure as shit looks like it from the timing setup.

a "loose rocker"....you sure it's not from a bent to fuck valve? i say pull it down and find out. weird that it was running fine then wouldn't restart. how long was it throwing a code for the timing? did he run it out of oil?


these aren't horrible to do. you will need cam lock tools to line up and lock in the camshafts while the chains are off, otherwise it's just time consuming.
He said the car wasn't throwing a code and the thing does burn oil so it was a little low. He also said that he was noticing a noise upon start up. With the belt being as slack as it was a valve has to be bent. He is going to start pulling the head tomorrow.

Oh and yes its the GM 3.6
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Old 08-16-2016, 06:47 PM   #12
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He said the car wasn't throwing a code and the thing does burn oil so it was a little low. He also said that he was noticing a noise upon start up. With the belt being as slack as it was a valve has to be bent. He is going to start pulling the head tomorrow.

Oh and yes its the GM 3.6
make sure he purchases the cam lock tools. he wont get it back together otherwise
https://www.amazon.com/3-6L-Camshaft....6+timing+tool

good luck!
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