1982 MARINER 2.0L 150 Rebuild Issue

[TXSTDU]

I have since torn the block apart, put all new pistons etc etc. Nothing was spared.

Everything went back together fine. Now today when I went to start the motor for the first time I ran into an issue. The motor spin very very slowly, almost like it is binding up.

I followed the manual, everything thing went together fine. The only thing that I didn't think was perfect were the aliment dowels on the crank. I think I had them in the hole but with enough force (fingers) I could get them to spin, but the block halves went back together just fine.

Maybe it is that, maybe the starter is dirty I don't know, but before I ruin something I am asking yall.

Please help me I at my wits end.

 

[Faztbullet]

Re: 1982 MARINER 2.0L 150 Rebuild Issue

Pull the sparkplugs and see it its still bound up. If so pull the lower unit and recheck. If still bound up you either missed a pin and possibly forced halves together or if you replaced the main bearings the replacements are incorrect as there are 3 styles of these...

 

[CharlieB]

Re: 1982 MARINER 2.0L 150 Rebuild Issue

The only thing that I didn't think was perfect were the aliment dowels on the crank. I think I had them in the hole but with enough force (fingers) I could get them to spin, but the block halves went back together just fine.

If you could spin the bearing shell at all, then you missed the dowel in the case, and when you bolted the cases together it causes a misalignment in the crank/bearings, making it stiff to turn over.

Test by removing the spark plugs and see if you can turn the flywheel by hand. It should NOT be too stiff.

 

[TXSTDU]

Re: 1982 MARINER 2.0L 150 Rebuild Issue

Ok so I took the motor back apart and think I found out what was the problem. I didn't have the bottom alignment dowel and I forced the block together, thus I am think put the crank out of alignment. During that I managed to push one of the pins back into the block.

Here is my new questions, can I just pull that pushed in pin back out and reinstall correctly or do I need to purchase a new pin?

 

[CharlieB]

Re: 1982 MARINER 2.0L 150 Rebuild Issue

Just pull the pin back out far enough to provide positive, definate alignment of the bearing shell.

 

[Faztbullet]

Re: 1982 MARINER 2.0L 150 Rebuild Issue

Good luck pulling pin as they are a tool steel carbon and laugh at drill bits. I repair customers by arcing a welding rod to pin and twist it out a replace it with one salvaged from a scrap block as these are not sold by Mercury.