engine will not rotate

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).

cre · 05-27-2007, 04:25 AM

Quote:

Originally Posted by suprabahamut

cre how do you tell if the pistons are moving can you look into the spark plug holes

Twice I've said have someone watch. Another way that works well (sometimes better) is getting a dowel just large enough around that it'll stand upright in the sparkplug hole but still move up and down freely. Mark it with a pen somewhere you'll be able to tell the difference if the piston moves as much as 1/8". Turn the crank and watch the dowel to see if it moves up or down.

By now you could have already pulled the cam covers, the cams and valve buckets to see if a spring snapped or a keeper failed. Then all that would be left are pulling the oil pan and checking on the flywheel. I understand though, time's tight and you don't have all the tools?

jfunez · 05-27-2007, 08:55 PM

well..to begin ,getting a little more info from the guys you bought it from would be very helpfull, as far as I understand..the engine has been sitting with no oil or coolant for over a year... first thing first.

1... remove all belts and try turning the engine with a breaker bar...
this will eliminate a zeised a/c compressor or alternator or something.

2...make sure supra is in neutral...dont forget to block wheels.

3...if none of this works, its possible that AT some point water got in the
combustion chambers and created some rust or a rust lip in the
cylinder wall that prevents the cylinder from going past it..
3.5 if this is the case ,remove the spark plugs and put engine oil or wd 40 or any rust penetrant in the combustion chambers, let it soak and try again to turn the cranck.

4..check for holes on your engine block...some of these are dificult since they tend to end up under the intake manifold near the starter..

suprabahamut · 05-27-2007, 11:19 PM

I have looked today uner the car and tried what cre said with checking the pistons, how large could the hole be because I have not seen any thing inperticular yet, but some more information to tell all you guys with the pistons now it will only turn less clock wise and counter clock wise than the day before

05-27-2007, 01:11 AM	#2
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	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. __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

05-27-2007, 02:02 AM	#6
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	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). __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

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05-26-2007, 11:23 PM	#1
suprabahamut 3" Exhaust Join Date: May 2007 Location: greensboro Posts: 242	I looked at the starter today how can you find out if it is stuck do you have to remove the transmission

05-27-2007, 01:51 AM	#4
suprabahamut 3" Exhaust Join Date: May 2007 Location: greensboro Posts: 242	cre how do you tell if the pistons are moving can you look into the spark plug holes

05-27-2007, 01:52 AM	#5
suprabahamut 3" Exhaust Join Date: May 2007 Location: greensboro Posts: 242	btwilson86 did you have to replace your engine or can you repair it

05-27-2007, 08:55 PM	#8
jfunez 12psi boost Join Date: Oct 2005 Location: georgia,usa Posts: 338	well..to begin ,getting a little more info from the guys you bought it from would be very helpfull, as far as I understand..the engine has been sitting with no oil or coolant for over a year... first thing first. 1... remove all belts and try turning the engine with a breaker bar... this will eliminate a zeised a/c compressor or alternator or something. 2...make sure supra is in neutral...dont forget to block wheels. 3...if none of this works, its possible that AT some point water got in the combustion chambers and created some rust or a rust lip in the cylinder wall that prevents the cylinder from going past it.. 3.5 if this is the case ,remove the spark plugs and put engine oil or wd 40 or any rust penetrant in the combustion chambers, let it soak and try again to turn the cranck. 4..check for holes on your engine block...some of these are dificult since they tend to end up under the intake manifold near the starter..

05-27-2007, 11:19 PM	#9
suprabahamut 3" Exhaust Join Date: May 2007 Location: greensboro Posts: 242	I have looked today uner the car and tried what cre said with checking the pistons, how large could the hole be because I have not seen any thing inperticular yet, but some more information to tell all you guys with the pistons now it will only turn less clock wise and counter clock wise than the day before