Engine lock up

Grandpa C
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Engine lock up

Postby Grandpa C » Thu Oct 12, 2017 3:28 pm

I have finished the rebuild again on my 800, and it took so long the engine seems to have locked up.
Turn the key I can hear the starter motor try to engage, and that's all.

Is there anyway that I ight be able to free up the engine, it did spend a lot of time dry.
Remember a Woman loves a Man that can cook. :evil:

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FallenAngel
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Re: Engine lock up

Postby FallenAngel » Thu Oct 12, 2017 4:09 pm

Squirt some trans fluid into the cylinder's Let it sit over night Pull one the cover's to gain access to the crank and with the spark plugs out rotate back and forth until you can rotate the engine a few complete rotations. Then try the starter

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BRONX INTRUDER
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Re: Engine lock up

Postby BRONX INTRUDER » Thu Oct 12, 2017 4:26 pm

You can also put bike in gear with clutch pulled.. Roll and let clutch pop out.. back and forth with plugs out and lube in cylinders.
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FallenAngel
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Re: Engine lock up

Postby FallenAngel » Thu Oct 12, 2017 4:59 pm

Just be sure to rock the engine back and forth and make sure you can rotate the engine a few cycles.
The slightest bit of rust can brake a ring, piston land or lock the engine up and you will need to tear it down again.
I suggest putting a wrench on the crank because you will have a better feel of the movement in the engine.
I suggest Trans fluid because it is thinner and wicks better then Oil

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BRONX INTRUDER
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Re: Engine lock up

Postby BRONX INTRUDER » Thu Oct 12, 2017 5:18 pm

FallenAngel wrote:Just be sure to rock the engine back and forth and make sure you can rotate the engine a few cycles.
The slightest bit of rust can brake a ring, piston land or lock the engine up and you will need to tear it down again.
I suggest putting a wrench on the crank because you will have a better feel of the movement in the engine.
I suggest Trans fluid because it is thinner and wicks better then Oil

Better than pblaster too? Just wondering.
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FallenAngel
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Re: Engine lock up

Postby FallenAngel » Thu Oct 12, 2017 6:32 pm

BRONX INTRUDER wrote:
FallenAngel wrote:Just be sure to rock the engine back and forth and make sure you can rotate the engine a few cycles.
The slightest bit of rust can brake a ring, piston land or lock the engine up and you will need to tear it down again.
I suggest putting a wrench on the crank because you will have a better feel of the movement in the engine.
I suggest Trans fluid because it is thinner and wicks better then Oil

Better than pblaster too? Just wondering.


For rust seized engines? I think so Also good for Lubricating cables and It dosnt attract dirt. On older engines I use it in My fuel tank.

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Re: Engine lock up

Postby BRONX INTRUDER » Thu Oct 12, 2017 7:07 pm

FallenAngel wrote:
BRONX INTRUDER wrote:
FallenAngel wrote:Just be sure to rock the engine back and forth and make sure you can rotate the engine a few cycles.
The slightest bit of rust can brake a ring, piston land or lock the engine up and you will need to tear it down again.
I suggest putting a wrench on the crank because you will have a better feel of the movement in the engine.
I suggest Trans fluid because it is thinner and wicks better then Oil

Better than pblaster too? Just wondering.


For rust seized engines? I think so Also good for Lubricating cables and It dosnt attract dirt. On older engines I use it in My fuel tank.

Wow.. Good to know. Ty. :cheers:
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Lechy
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Re: Engine lock up

Postby Lechy » Fri Oct 13, 2017 1:52 am

LH side engine cover, remove the center plug ( can be very tight ) 17mm socket and breakout bar, gently turn the bolt backwards then forwards. This will turn the engine over, easier if sparkplugs are removed. If it locks up, rotate in the opposite direction 2 full turns, if it locks up again you have the valve timing all to shit and you will be looking at new valves.

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Re: Engine lock up

Postby navigator » Fri Oct 13, 2017 8:19 am

Lechy wrote:LH side engine cover, remove the center plug ( can be very tight ) 17mm socket and breakout bar, gently turn the bolt backwards then forwards. This will turn the engine over, easier if sparkplugs are removed. If it locks up, rotate in the opposite direction 2 full turns, if it locks up again you have the valve timing all to shit and you will be looking at new valves.

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9

What Lechy says!!!
turn the crank CCW first, with the plugs out, it should roll over easy.
CW will tend to bind things up.

Lechy
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Re: Engine lock up

Postby Lechy » Fri Oct 13, 2017 8:26 am

Turning CW engages the sprag clutch and will turn the starter dog gears and starter motor.

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Grandpa C
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Re: Engine lock up

Postby Grandpa C » Fri Oct 27, 2017 12:35 pm

No go so far, close to parting the rest our and get another one.

Could dry clutch plates aggravate this problem?
Remember a Woman loves a Man that can cook. :evil:

Grandpa C
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Re: Engine lock up

Postby Grandpa C » Sun Nov 05, 2017 5:58 pm

Ok the good news is, I got engine unstuck!

I used some transmission fluid, that didn't work, then tried some rust remover fluid. Engine still locked up and then used some Seafoam spray, when that still did not free it I bought some PB Blaster and minorly flooding the cylinder. Put the breaker bar on again and she spun!

Now I can finish getting this back on the road!
I am working again, so it will be slow, will let you know when its done.
Remember a Woman loves a Man that can cook. :evil:

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Re: Engine lock up

Postby navigator » Sun Nov 05, 2017 6:10 pm

WOOT!!!! :cheers:

Grandpa C
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Re: Engine lock up

Postby Grandpa C » Thu Dec 07, 2017 6:21 am

The compression was so good on the pistons that it shot the remaning fluid out over 15 feet. That was a surprise to me. :)
Remember a Woman loves a Man that can cook. :evil:

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Re: Engine lock up

Postby Swcoinguy » Fri Dec 08, 2017 3:32 am

Grandpa C - am I remembering correctly that your on the gulf side of Florida? Somewhere in the Tampa area?


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