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-   -   dead FB; engine won't spin (https://rotarycarclub.com/showthread.php?t=11171)

85'12a-Blake 05-01-2010 02:10 AM

dead FB; engine won't spin
 
well just any other night after work waitin for the manager 2 come out and while i was waitin. something poped in my car and it locked down. i figured out it wasnt the starter. IT mite be a possibilty of the throw out bearing since it was going bad but it still rolls and takes gear. if thats not it then its gotta be internal. Any ideas, its a 12a with 146k on it stock. any suggestions as 2 the problem would be great but will be starting the tear down soon once i get it home. just 2 say ahead of time this is my first rotary so its ok 2 talk 2 me like an idiot b/c i probly wont understand all of the technical lingo

Kentetsu 05-01-2010 11:09 AM

Ouch! With the tranny out of gear, can you rotate the motor by hand?

85'12a-Blake 05-01-2010 11:32 AM

nope motor still dont move....its locked down good....i havent taken a breaker bar 2 try it since it isnt home yet....but it wouldn't move with the starter.....

IH8DSM 05-01-2010 12:36 PM

Did you check the oil? Could of ran low on oil and seized or bearings toast

85'12a-Blake 05-01-2010 12:56 PM

oil level and coolant both are good. but dad said the oil smelt burnt.....idk but he's been building cars for over 30 yrs but not rotarys but still i had the oil changed 1200 miles ago.

IH8DSM 05-01-2010 02:04 PM

Quote:

Originally Posted by 85'12a-Blake (Post 117422)
oil level and coolant both are good. but dad said the oil smelt burnt.....idk but he's been building cars for over 30 yrs but not rotarys but still i had the oil changed 1200 miles ago.

what kind of oil do you run, did you see in copper in the oil?

85'12a-Blake 05-01-2010 03:04 PM

idk about the copper in the pan but there wasnt any in the oil on the dipstick. it was Penzoil conventional 10w-40. IT's still sittin @ work not home

12arotary 05-01-2010 04:41 PM

time for a new engine, unless your throw out bearing wore down and broke some teeth out of your pressure plate that wedged themselves into the flywheel. its happened to me

85'12a-Blake 05-01-2010 06:39 PM

well thats kinda what my dad said b/c the throw out was gettin pretty loud but didnt have the cash for one and a clutch 2. but we will see soon i just hope if it is the motor that its not too destroyed inside

12arotary 05-01-2010 10:11 PM

if the motor is locked up at least one rotor will be totally demolished 100% guaranteed.
a good way to figure out whether or not its the clutch- the motor will spin backwards so through a socket on the front and try

85'12a-Blake 05-02-2010 12:04 AM

i'll try that 2moro if i got time but i'll be gettin it home monday so i'll just pull it then and find out but thanks appriciate the info

85'12a-Blake 05-04-2010 07:17 AM

well i took a breaker bar 2 it this morning and it broke free but i didnt try a compression stroke. So hopefully that means its the throw out bering and clutch and all that fun stuff.

12arotary 05-04-2010 09:37 AM

you should have been able to tell where the noise came from and if it wasn't the engine it should fire right up

85'12a-Blake 05-04-2010 07:39 PM

well rlly the only noise i heard when it broke free was me fallin on my A** and the wrench falling.....but it feels like it has compression....so you think its a good idea 2 try and start it b4 i tear it down and see?

Kentetsu 05-04-2010 07:45 PM

Pull the trailing plugs one at a time, have somebody turn the motor over while you listen to the air puffs. Listen for an absence of puffs, or for a different rhythm between front/rear.

Good luck...

12arotary 05-04-2010 08:11 PM

if it is blown starting it will do no harm if it isn't blown it will start up and run fine its a situation where you can't loose

85'12a-Blake 05-04-2010 08:56 PM

ok thnks thats wut i was wandering about.

85'12a-Blake 05-04-2010 11:10 PM

well just got done tryin 2 start it and its a no go. it started 2 turn over then it locked down again. So if any1 knows of a cheap runnin motor let me know plz

12arotary 05-05-2010 12:49 AM

ebay. craigslist. rx7club


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