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back together after replacing rings; Won't Start
Topic Started: May 13 2013, 05:05 PM (561 Views)
blameiton
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I just finished putting my engine together after installing new rings. It will not start. I checked to make sure that both valves were in the closed position and number one cylinder at top dead center. I understand that standing at the front of the car facing the windshield number one cylinder is at my left hand. I tried rotating the spark plug wires in the distributor One place clockwise and there was a backfire through the carburetor. That tells me that there is spark and there is fuel. When I replaced the timing belt I replaced it the same way I took it off. I marked the top cog on the cam when I took the belt off so that when I replaced it it would go back on the same way. I checked to make sure that number one cylinder was top dead center when both valves were closed and the rotor in the distributor points at number one cylinder. I have adjusted the distributor all the way clockwise and all the way counterclockwise within the adjusting groove. I am using a brand-new battery. What can I do to make it start? 92 1.0 litre (Pete Casanova)
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dayle1960
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Fastest Hampster EVER

You did it wrong. Sorry to say.

Look, there are timing marks on the cam sprocket and the crank sprocket. They need to be aligned with marks on the engine.

What you did do was to put the timing belt on the way you took it off. Sure it seems logical to do, as long as the crank and cam never moves. Unfortunatly, in every single head replacement it is necessary, absolutely necessary to rotate the cam while the timing belt is off. No way around that neat little feature of mechanics.

Go back to step one and pull your timing belt cover off and line up the timing marks.

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blameiton
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checking the marks now. thank you. get right back
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dayle1960
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BTW, you might see TWO TIMING MARKS ON THE CAM SPROCKET. Be sure you use the correct one.

Line the timing marks up first. Then put the timing belt on. Make DARN SURE you do not move the sprockets while putting the timing belt on. If you are off by one tooth, your car will not start and you will have to repeat until you get it right.

Next, after you have the belt back on, take a wrench and turn the sprockets a couple of revolutions and get the marks to align again. This proceedure will ensure that once the marks are in the proper orientation, you can see if a tooth was "skipped".
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blameiton
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pulled off the cover and marks are lined up.
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dayle1960
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Fastest Hampster EVER

can you snap of the cam sprocket?
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dayle1960
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Fastest Hampster EVER

http://geometroforum.com/topic/2232748/1/

Scroll down a few pictures and you will see the front of a metro engine. Look at the timing marks. On the cam sprocket you will notice a mark at the 12 oclock position. You will also see on at the seven oclock position. Are you timing marks looking like this?

Timing alignment in reality:
Posted Image
Photos courtesy of someone else.

Borrowed from BadBent


Edited by dayle1960, May 13 2013, 08:28 PM.
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Memphis metro


Backfiring thru the throttle body suggest you have your spark plug wires routed incorrectly on the distributor cap.

Heres what it should be,

http://geometroforum.com/single/?p=685947&t=4464045
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cwatkin


He did move the plug wires on purpose for testing reasons....

I agree that his timing belt is off a tooth or two as I think this has happened to everyone here who has taken a Geo engine apart. You may THINK the marks are lined up but the tensioner pulls some slack out of the belt and then it is off.

I always put my timing belt on and leave the cover and all other pulleys and belts off and start the engine to make sure it runs correctly. This exposes a tooth or more off belt really fast. One tooth off and the car will run crappy. Two teeth off and you might get a pop or sputter but it won't run. You only need to do this a few seconds and don't want to do it any longer than needed as your alternator and water pump do not function in this condition. You do not want to cook your newly rebuilt engine.

Conor
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blameiton
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Update , , , B-) The reason I took it apart was because the rings were bad such that on number 3 cylinder I had to replace the spark plug every couple of days. well, , , guess what?? I put new spark plugs into it and it runs mighty fine. Problem is , , , I took the thing apart 4 years ago and now the front seal leaks like a sieve so I am now faced with replacing it. I need the car and that is why I finally got around to putting it back together. So I am off to the search here in the forum to find info for that and then I am off on my 3 mile walk to and from the car parts place to get the seal. Thank you guys. You are all so very awsome. You deserve to give yourselves a pat on the back . In fact, may you live to be a thousand years old. :thumb Pete Casanova
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