crankshaft will not turn


davidm303
01-12-2016, 04:59 PM
Hi, a year ago I had an issue with the antifreeze leaking from the cylinder head. I replaced the head gasket and had the head resurfaced. Though, by accident, I polished the cylinder bores with a 1000 grit wet sand paper with using wd40 and the grit I didnt clean damaged the piston rings, I think, because one piston had a compression leak.
So, a few days later, I removed the heads, opened the engine's bottom, then I proceeded as follows:
removed the pistons from the top; cleaned the pistons; honed the cylinder bores to remove the glaze; installed new piston rings; replaced the
oil pump; primed the oil pump by hand; turned the crankshaft by hand a few times; put everything back; removed the spark plug connectors to let the car auto prime before turning it on. Then, I started the car.
The car turned on smoothly, I didn't see a leak, hear a squeal, or get a compression leak as according to the compression tester. I didnt drive the car after it turned on because it was late, I was tired, and I thought I had succeeded in rebuilding my engine.
When I tried to turn the car on the next day, it didnt start. I saw that the serpentine belt wasn't moving while having my dad turn the key. As a precaution, I replaced the battery, alternator, starter, and checked the fuses in case it was an electrical issue; everything checked out fine. After I installed all new toys for my car, I noticed that the car didnt turn over or crank. It sounds like it's an electrical issue because the starter doesnt seem to engage, though new and tested to be in good working order.
I've invested a lot of money and time on this car, but it's mine, and I won't give up. At this point, is there anything I forgot to do? Can you help me?
I can turn the crankshaft using a breaker bar and elbow grease. The crankshaft and camshaft sensors are new. The oxygen sensors are new. The cat converter is new.
My best guess is that my error was not removing the engine from the car. I honed the cylinder bores with the crankshaft still on, but I was careful not to go in too deep and touch the crankshaft. I also was careful to protect the crankshaft with a linen-free clothe and use transmission oil while honing the bores.
2000 Pontiac Grand Am gt 4.3l v6

maxwedge
01-12-2016, 06:20 PM
4 cyl. engine? So the starter makes no attempt to crank the engine or engage at all? BTW, are you saying the second time around with pistons, you removed them from the bottom?

davidm303
01-12-2016, 08:53 PM
4.3l v6, I pulled the pistons out from the top, and no, the starter doesnt seem to engage. What is your best guess? I dont want to remove the engine if it can be helped.

Crvett69
01-12-2016, 08:59 PM
does starter click or anything when you turn key? have you tried jumping across it with screwdriver or wire to see if it will engage?

maxwedge
01-12-2016, 09:41 PM
does starter click or anything when you turn key? have you tried jumping across it with screwdriver or wire to see if it will engage?
Agreed as the next step.

davidm303
01-12-2016, 10:34 PM
Starter does not click and i have not tried jumping it with a screwdriver. Im more concerned about the crankshaft not turning. It'll turn a little, but stops like if its bearins got stuck or if they needed lubrication. If i can somehow get the crankshaft to turn, im sure the starter will engage. Does anyone here know of an easy way to prime the oil from the outside? I dont know if it'll work, but it's worth a try.

Tech II
01-12-2016, 10:37 PM
I think you mean 3.4, not 4.3........

Yeah, the first thing I would have done is test the "S" terminal of the solenoid, purple wire going to it, for power with the key in the crank position, with a test light...if you have power, get a starter...no power, backtrack the circuit...

davidm303
01-12-2016, 10:43 PM
Will do, thank you. And yes, it's a 3.4l.

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