When I go to crank my 1997 Monte Carlo 770, it hums and doesn't sound like it's trying to turn over. Anyone got any suggestions?
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Find out if the humm you heare is the bilge pump or the starter motor.
If it is the bilge pump then check you battery charge and connections for loose fitting or corrosion.
If ok then you wil have to remove the cover form the electrical box and jumper the wires on the starter relay " the two big ones. this should turn over the starter. If it does not then either the starter if bad or the cables are not making good conections at either the starter/relay/battery ends.
You can use a jumper cable between the battery pos. and the starter to bypass the starter system. Be carefull it it a live wire and will arc to anythig grounded in the boat. Touch it to the starter post and the starter should turn over.
Also check the engine ground wire on the starter mounting bolt to see if it is in good condition. You can take a jumper cable from the battery ground to a ground point on the block to test it.
If the starter turns over but not the engine the the starter bendix is not engaging the flywheel or the flywheel is spinning on the crankshaft you can look down the inspection hole to see if the flywheel is turning. I either case you will have to remove the front engine cover to inspect and repair both.Providing mobile JetSki service to the Charlotte / Lake Wylie area.
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You want to jump acrost the starter solinoid #16 on the starter diagram page. It will have 2 big nots with 2 red wires. One from the battery and one to the starter. It is just a switch and you should here it click when you press the starter button.Providing mobile JetSki service to the Charlotte / Lake Wylie area.
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My battery crapped out on me this summer, on my 97 Monte Carlo. The battery gave off 12 volts when sitting idle and when out under a load (trying to start the motor) ....but all I would get a hum sound from the electrical box. I took the cover off the box then put the meter on the Relay, I think, I tried to crank it again but the Relay would only give us a 3, or something, on the meter. Went out and bought a new battery and it has been fine ever since.
This sounds, maybe, similar to your story. Try getting a new battery and see what happens, especially before you start tearing things down
Good Luck - Steve
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Thanks for everybodies help. Actually, when I tried to jump the PWC (with the car off) it cranked right up so it does seem to be the battery. Where do you recommend getting a replacement from (a boat center or can you get it from WalMart/Sears)?
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I was looking for the replacement battery part number and I'm really confused. Brownleisure listed the battery as the YB14L-A2 which is a 14V battery. A few other places I saw the PC625 (which is a replacement for the YB16CL-B a 16V battery). Help please.
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