1999 M1097 4 speed 6.5L seized motor

[4x4nutz]

The TM does not cover this well for me, so I need y'all's help. 6.5 Optimizer, New batteries, new starter...Motor turns just enough to make the fan blade move an inch every time I start it, but won't go any further than an inch. Will turning the motor by hand for a while help to un freeze it? What is the best way to turn it without taking a bunch of stuff apart? Thank you!!!!!!

 

[NDT]

Remove the injectors and see what is going on inside.

 

[87cr250r]

Glow plugs are a lot easier to pull. Sounds like you have a cylinder full of water or fuel.

 

[Mogman]

Crawl under it with a 1" open end wrench, there are some flats on the lower pulley that the wrench will grab onto, see if you can turn it by hand, if not pull the glow plugs and try again, do not hit the starter again until you can make more than 2 full crankshaft turns by hand, if there was liquid in the cylinders then crank it with the glow plugs out.
Remember the crank turns clockwise looking from the front of the vehicle, never a good idea to turn one backwards.
How did the oil look when you changed it?

 

[MarkM]

There was no water in the oil? It's either liquid locked or something bad happened inside the motor. Doubt the starter is bad but possible. With the suggestions from others you should be able to ascertain what is wrong.

Mark

 

[4x4nutz]

Got it turning over! Oil was dirty, but no metal shavings, water, or antifreeze in the system. Now it's all about getting it started.
THANK YOU!!!!!!!

 

[MarkM]

Great news!

 

[87cr250r]

When stored wet or without properly treated coolant, corrosion in the water pump can tighten things up though I would expect the belts to slip.

 

[4x4nutz]

Turning over really nice...good pressure coming out of the tail pipe, just won't ignite. Glow plug control box and wait light seem to be working. Used a little starting fluid and still nothing. Not even a stutter...it's in the 80's so it's not cold.

 

[Mogman]

Please do NOT use starting fluid ever on this engine.
Have you replaced all the filters?, bled the fuel system? made sure you have fuel flow to the injectors?

 

[87cr250r]

The engine will start without glow plugs at 80F after about 30 seconds of cranking.

But, you're not getting any white smoke out the exhaust? That means no fuel.

Disconnect shutdown solenoid wire.

Open the valve on the top of the filter housing and crank until you have fuel coming out.

Reconnect shutdown wire and verify power to shutdown solenoid with ignition in run position.

Crack lines at a few injectors and crank until fuel sprays from line. You may have to lift the line away from the injector (nut still in place) and hold it that way to break the seal a bit. If you're going to start with glow plugs 3 or 4 cylinders will get it going but I suggest priming all 8 if you're going to start without.

Verify glow plug operation with your volt meter. You should see a substantial drop in battery voltage during a glow plug cycle (2+ volts).

If you want to test glow plugs, unplug them all and touch your ohmmeter between the terminal and engine block. They should all read a low value.

 

[4x4nutz]

The engine will start without glow plugs at 80F after about 30 seconds of cranking.

But, you're not getting any white smoke out the exhaust? That means no fuel.

Disconnect shutdown solenoid wire.

Open the valve on the top of the filter housing and crank until you have fuel coming out.

Reconnect shutdown wire and verify power to shutdown solenoid with ignition in run position.

Crack lines at a few injectors and crank until fuel sprays from line. You may have to lift the line away from the injector (nut still in place) and hold it that way to break the seal a bit. If you're going to start with glow plugs 3 or 4 cylinders will get it going but I suggest priming all 8 if you're going to start without.

Verify glow plug operation with your volt meter. You should see a substantial drop in battery voltage during a glow plug cycle (2+ volts).

If you want to test glow plugs, unplug them all and touch your ohmmeter between the terminal and engine block. They should all read a low value.

No white smoke. Using the starting fluid should have made the motor kick even if the motor wasn't getting fuel. Yes, the fuel pump is working and fuel was coming out the bleeder valve. I guess at this temp the plugs are not working or creating enough heat to ignite the fuel. Thank you...going to test the plugs later today.

 

[MarkM]

You don't need the glow plugs above 70 to start the engine. I was starting mine down to 60ish with effort without the glow plugs functioning. While cranking loosen the fuel line to the injector to see if there is fuel pressure. At that temp and no white smoke I doubt you are getting fuel to the injectors.

Mark

 

[swbradley1]

I'm curious. What did you find and then do to get it cranking?

 

[MarkM]

The rings may have rusted to the cylinder walls and sometimes you can get lucky and free it up. Have personally seen it go both ways.

Mark

 

[swbradley1]

Yeah, but I was hoping he would tell exactly if he knows.

steve

 

[TOBASH]

You might be water locked or fuel locked or oil locked. Trying to force your engine to turn against a noncompressible liquid in the cylinder will bend and break pistons and rods.

Someone made the suggestion that you should remove your glow plugs. That is an outstanding suggestion. Then you will be able to turn over the engine and see if the radiator fluid comes out or if fuel comes out or if oil comes out of the glow plug holes. That will also help you diagnose the problem.

I would also strongly consider spraying marvel mystery oil down each glow plug hole and fill each glow plug hole and then let it sit for 24 hours.

I strongly suspect you have fluid of some sort in your cylinders and attempts to spin the engine against that will create hydrostatic pressure that will bend or break your rods and pistons.

TOBASH

 

[swbradley1]

He already has it unlocked, I just wondered if he found out why.

 

[4x4nutz]

I'm curious. What did you find and then do to get it cranking?

I turned to motor over a couple times by using a long handled socket wrench and putting a socket on the crank shaft bolt.

 

[4x4nutz]

You might be water locked or fuel locked or oil locked. Trying to force your engine to turn against a noncompressible liquid in the cylinder will bend and break pistons and rods.

Someone made the suggestion that you should remove your glow plugs. That is an outstanding suggestion. Then you will be able to turn over the engine and see if the radiator fluid comes out or if fuel comes out or if oil comes out of the glow plug holes. That will also help you diagnose the problem.

I would also strongly consider spraying marvel mystery oil down each glow plug hole and fill each glow plug hole and then let it sit for 24 hours.

I strongly suspect you have fluid of some sort in your cylinders and attempts to spin the engine against that will create hydrostatic pressure that will bend or break your rods and pistons.

TOBASH

I was told the same thing by someone on another site...pull the plugs and mix some Marvel and ATF 50/50 and fill those holes up!