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-   MKIII Supra (http://www.toyota-supra.info/forums/mkiii-supra/)
-   -   engine will not rotate (http://www.toyota-supra.info/forums/mkiii-supra/8529-engine-will-not-rotate.html)

Jjona5 05-26-2007 05:44 PM
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How about the starter is stuck out and in a position where it wont spin(there is a sweet spot)

Jjona5 05-26-2007 05:46 PM
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Or maybe a spark plug exploded in one of the cylinders and left crap in there...

Though its probably a mechanical failure...

supraman121 05-26-2007 08:31 PM
I dont see were he said it was a 5spd or a auto, sounds to me that someone ran it out of oil and the engine seized, there isnt any holes in the block so if it throw a rod then it was done at low rpms, if it a five speed it wont turn over and push it off, get it rolling and pop it into gear, but then again it kind of sounds like its a auto.

And probly if the engine is seized it might just be cheaper to find a lowmilage engine to put in it then rebuilding that one to get it to work.

suprabahamut 05-26-2007 11:22 PM
how can you find out if a rod was trown through the engine, and it is a manual transmission

suprabahamut 05-26-2007 11:23 PM
I looked at the starter today how can you find out if it is stuck do you have to remove the transmission

btwilson86 05-27-2007 01:11 AM
I threw a rod in my 7MGE at like 2000 revs. Half went through the no. 5 wall, the other have went down into the oil pan (punctured it) then up into the no. 6 and went through that pistons' wall. Afterwards, it would still crank over with the starter (and actually fire too). It eventually stopped starting (after obvious massive oil leak), but I could still hand crank it with a breaker bar; it just got difficult every now and then. One of these days I should take a pic of that no. 5 piston and post it up here; it's pretty sick looking.

cre 05-27-2007 01:43 AM
Quote:
Originally Posted by cre
Pull the spark plugs and check for anything inside the cylinder which could be getting in the way... such as a valve. Have someone using a flashlight watch to see if the pistons are moving while you try to turn the crank. If the crank turns without the plugs in you're just fighting with the compressing air.
A thrown rod doesn't always come out the side of the block. See if the pistons are all moving, even just a little and make sure there's nothing in the cylinders. The starter being seized is a definite possibility, same for a jammed clutch (if it died in a VERY bad way ;) ) and a seized transmission.

Pulling the starter is the best way I can think of. As for the clutch, there's an inspection plate on the bell housing you can pull off to take a look inside. I presume the transmission's not the issue as I assume you had it out of gear when it was towed?

suprabahamut 05-27-2007 01:51 AM
cre how do you tell if the pistons are moving can you look into the spark plug holes

suprabahamut 05-27-2007 01:52 AM
btwilson86 did you have to replace your engine or can you repair it

btwilson86 05-27-2007 02:02 AM
I replaced the engine... JDM import. I figured that it'd be easier than replacing the block... The old one has two baseball sized holes in it (one on each side).


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