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Re: 91 chevy G20
Well not sure exactly why it wont line up use something to turn the crank and cam to appropiate position start sliding crank gear until cam gear is touching then start to push both at same time make sure your crank key and cam pin are bothin place
On many OHV pushrod engines, the crankshaft sprocket is installed on the crankshaft nose and the crankshaft is rotated to position piston #1 at TDC. At this point, a mark stamped onto the crankshaft sprocket is pointing directly upward (toward the camshaft).
The camshaft sprocket is then temporarily bolted to the cam and used to rotate the cam until a mark stamped on the cam sprocket is pointing directly downward (toward the crankshaft). The sprocket is then removed from the cam (without allowing the cam to rotate).
The timing chain is looped over the cam gear, the mark on the cam gear is positioned directly downward, and the chain is looped around the crankshaft sprocket. When the cam sprocket is attached to the cam, the timing marks on the crank and cam sprockets should be pointing toward one another.
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do a physical check to see if there any lights on that should not be ( boot light 0 glove box light head lights). Remove the battery earth cable and reconnect an amp meter in the circuit to get an idea of the current flow . Even though the battery is new I would have a load test done on it as it may be defective in a cell. Have an accredited auto electrician check the alternator as it may be the regulator is faulty.
my guess is that its leaking freon from behind clutch? or its squealing? If its leaking changing the clutch wont fix that. If its making noise you will need to rent a clutch puller/installer from auto zone. you have to pay for the tool but when you bring it back you get all the money back,they call it a loaner tool. just be sure that when you put on the new one that you dont crimp the wires on the back of new one against engine (thats veary easy to do because you cant see it) you may to also have to adjust the air gap on the new one if it slips when the a/c or defroster is on.
ADVANCE AUTO HAS A MACHINE TO TEST MODULES.. BUT IF I WENT THROUGH THE HASSTLE TO REMOVE IT I WOULD REPLACE IT..YOU ARE DOING WHAT IS CALLED SHOTGUN REPAIR..REPLACING PARTS ON A GUESS..NEED TO FIND OUT WHAT YOU ARE MISSING SPARK,,, FUEL,, COMPRESION...GET BACK WITH ME
If it is getting spark and fuel check the timing. The timing chain may have jumped.Take out #1 spark plug and tap engine till the compression stroke comes up. To check just hold your finger over the plug hole and the compression will blow it out. Then rock crank by hand and set to top dead center. Take distributer cap off and see if rotor faces #1 cylinder. If you have spark to the plugs and the plugs are good and you have fuel timing or compression is all that is left.