351w will not turn
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Fleet Mechanic
Joined: Dec 2006
Posts: 1,388
Likes: 6
351w will not turn
Just installed 351w into my 1996 bronco after removal for new freeze plugs, rear/front seals, timing chain, oil pan seal, etc. Need to hand turn motor to find TDC for distributor and motor will not crank/turn. I am using a 1/2 inch breaker bar with extension and some serious body weight applied clockwise, nothing. Should I remove spark plugs, insert some kind of penetrating oil to cylinders or do I have a bigger issue at hand?
Also motor has 190k miles and spun freely when removed, did not burn oil, etc, etc, ran perfect.
Thanks.
Also motor has 190k miles and spun freely when removed, did not burn oil, etc, etc, ran perfect.
Thanks.
Thread Starter
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Fleet Mechanic
Joined: Dec 2006
Posts: 1,388
Likes: 6
TC was pulled out and drained. All went back together fine, all bolted up nice.
What do u think, seized?
Thanks.
FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
If you never had to force the engine/trans together or had no problem rotating the TC to bolt it to the flexplate then obviously something happened to the motor. Pull the plugs to see if one or more cylinders are hydrolocked with fuel, if so then you may have pinched a wire somewhere locking an injector open.
Elder User
Joined: Mar 2013
Posts: 847
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From: In my house..
take the torque converter bolts out and try to slide the converter backwards towards the transmission, there should be some slop for it to slide in and out, if it doesn't pull the motor away from the transmission and make damn sure the converter is installed correctly, 9 out of 10 times it this type of problem, if that's not it then the only other possibility is the chain and gears, not quite sure how that could be screwed up unless you used the wrong marks to line the gears up, good luck..
Thread Starter
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Fleet Mechanic
Joined: Dec 2006
Posts: 1,388
Likes: 6
take the torque converter bolts out and try to slide the converter backwards towards the transmission, there should be some slop for it to slide in and out, if it doesn't pull the motor away from the transmission and make damn sure the converter is installed correctly, 9 out of 10 times it this type of problem, if that's not it then the only other possibility is the chain and gears, not quite sure how that could be screwed up unless you used the wrong marks to line the gears up, good luck..
There is play back/forwards with TC.
What is next option, pull heads?
Thanks.
Elder User
Joined: Mar 2013
Posts: 847
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From: In my house..
I'm lost, this was a running engine before you pulled it and all you did was chain and gears?.. This is crazy, theoretically it's impossible but apparently it happened, did you pull the plugs and all that jazz to see if the cylinders are filled with water or something, at this point i don't count anything out..
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Fleet Mechanic
Joined: Dec 2006
Posts: 1,388
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I'm lost, this was a running engine before you pulled it and all you did was chain and gears?.. This is crazy, theoretically it's impossible but apparently it happened, did you pull the plugs and all that jazz to see if the cylinders are filled with water or something, at this point i don't count anything out..
Pulled plugs, injectors. How can I check inside cylinders for water, etc?
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Elder User
Joined: Mar 2013
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From: In my house..
If you pulled the plugs and assuming there was water in the cylinders it would allow the engine to rotate while it pumped the water out so that's neither here nor there... So, it won't turn in either direction, just locked up tighter than dick's headband, correct ?
This is going to take some serious thought and i will post back later after i make a call to someone more knowledgeable then me..
This is going to take some serious thought and i will post back later after i make a call to someone more knowledgeable then me..
Thread Starter
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Fleet Mechanic
Joined: Dec 2006
Posts: 1,388
Likes: 6
If you pulled the plugs and assuming there was water in the cylinders it would allow the engine to rotate while it pumped the water out so that's neither here nor there... So, it won't turn in either direction, just locked up tighter than dick's headband, correct ?
This is going to take some serious thought and i will post back later after i make a call to someone more knowledgeable then me..
This is going to take some serious thought and i will post back later after i make a call to someone more knowledgeable then me..
I also put trans in neutral and tried to rotate engine, nothing.
What do u think?
Thanks.
Elder User
Joined: Mar 2013
Posts: 847
Likes: 4
From: In my house..
"That is correct, will not rotate in either direction. I am using a breaker bar with extension attached to balancer bolt and nothing.
I also put trans in neutral and tried to rotate engine, nothing.
What do u think?"
Think i need a drink..
I also put trans in neutral and tried to rotate engine, nothing.
What do u think?"
Think i need a drink..
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