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Old 05-28-2009, 03:07 PM   #1
stokesdead
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Default Replaced timing belt...now motor wont start 2000 LS2

My water pump went out on my 200 LS2.After looking around on the site i worked up enough courage to replace my water pump and timing belt. It went easy enough. I clamped the pulleys with vice grips and had no real problems getting the new belt on. The tensioner pulley was junk so i replaced it to. When installing the new belt the teeth on the pulley closest to the front of the car was about a half a tooth off so i unclamped it and moved it just that half a notch to get everything to line up. Did i mess something up when doing this? The belt was a duralast maybe i should have gone with an OEM timing belt.

So now I have everything back together and I can't get it to crank. Thinking my half a tooth turn may have thrown the timing off. I would assume it would still run if that were the case though maybe poorly. What do you guys say? Any advice for me?

Thanks in advance.

~Chris Stokes

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Old 05-28-2009, 05:16 PM   #2
stokesdead
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Default Re: Replaced timing belt...now motor wont start 2000 LS2

Took it back apart and with the 4 pulleys up top inline, the crankshaft pulley was 2 teeth off so I moved it and tried again. Now the car sounds like it is trying to turn over so i think there is some improvement but still wont start. At this point I am shooting in the dark and am hoping to get lucky. If i cant get it worked out then i guess its time to call a local shop. Any advice?

~Chris Stokes

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Old 05-28-2009, 06:35 PM   #3
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Default Re: Replaced timing belt...now motor wont start 2000 LS2

Being new here, did you try looking through past threads on V6 timing belt replacement, procedures, and checking, along with all the pictures up close to verify correct timing? There's a wealth of information here if you spend the time wading through the threads. Excellent pictures too. Some may be in the How-to library otherwise they're spread out either in the regular or tech forums of the L-series. A 3.0L V6 is pretty much the same through the few short years of production as far as timing goes so the past threads apply. Hopefully you didn't bend any valves with mistiming. I you find everything timed correctly and still lack a good start, post back as there may be another issue having nothing to do with timing - a fuel or ignition problem. There are many threads covering those two issues too but one problem at a time. Be sure timing is perfect before continuing with a fuel/ignition issue. We're here anyway it turns out.

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Old 05-29-2009, 11:46 AM   #4
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Default Re: Replaced timing belt...now motor wont start 2000 LS2

Got it!!!! Like i said before I looked at all the pictures and searched and searched the threads here before i began the project. The info gained here made the job possible. How i finally got it was all the cam sprocket marks were lined up and I noticed finally that the mark on the crankshaft wasn't lined up with the timing mark on the engine block moved it to where it should have been reset the tensioner pulley and it cranked right up. sounds and runs great now. I think the next task will be those dreaded spark plugs. Looks like a real bear but I guess 120K they probably need to be changed. LOL Thanks again for the help.

~Chris Stokes

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Old 05-29-2009, 12:04 PM   #5
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Default Re: Replaced timing belt...now motor wont start 2000 LS2

Nothing like creating your own headaches. You've done the hard part actually. Replacing the plugs will seem like a walk in the park. If you haven't already come across them, there are posts for replacing the plugs on our V6's too. Yes, it will require more labor but you're already greasy from the timing belt so........................just take your time removing all the paraphenalia to get to the plugs. Probably another few hours.

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Old 05-30-2009, 02:29 AM   #6
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Default Re: Replaced timing belt...now motor wont start 2000 LS2

You will need a set of inverted torx sockets to get the runners off. Like the F-dude said, it isn't as hard as it looks. The clamps that hold the rubber connectors on the runners come off easily. A pair of pliers and a small screwdriver is all you need. On top of each one is a pair of bumps. Squeeze them together with the pliers and pry up using the screwdriver. Make sure you remove the EGR valve before you try to remove the rear runners. After that, it is relatively straight forward.

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Old 05-30-2009, 08:54 AM   #7
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Default Re: Replaced timing belt...now motor wont start 2000 LS2

Did you check the marks on the cam sprockets with the permenant marks on the back of the cover housing?

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Old 03-15-2012, 10:55 PM   #8
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Default Re: Replaced timing belt...now motor wont start 2000 LS2

I need some help also. I am trying to time my 2000 Saturn LS2, there are 2 timing marks on each cam sprocket. How do I know which one to use? Thanks very much for any help

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Old 03-16-2012, 12:43 AM   #9
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Default Re: Replaced timing belt...now motor wont start 2000 LS2

If you look closely at the cam sprockets,specifically straight at it around where the retainer bolt is,you will see the numbers 1 and 2 on the sprockets on the back cylinder head, and 3 and 4 on the sprockets on the head closest to the radiator. The actual positions of the sprockets are: #1 is closest to the firewall, then 2, 3,4 with 4 being next to the radiator. The reason why you see two timing marks and two numbers on each sprocket is #1 and #2 are interchangeable, and #3 and #4 are interchangeable. You have to use whatever mark is above the number for the specific cam location it is in.

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Old 03-20-2012, 12:19 AM   #10
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Default Re: Replaced timing belt...now motor wont start 2000 LS2

Ok, one more question, on the crankshaft timing mark, you have a green marka and a white mark, about one inch apart, which one of these marks do you use? ie the green mark or the white mark?

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