1991 rm with antifreeze on sparkpug - Dirt Bike Forums at Dirt Rider Magazine

1991 rm with antifreeze on sparkpug

  
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1991 rm with antifreeze on sparkpug

 
rmnut rmnut
New User | Posts: 2 | Joined: 09/09
Posted: 09/22/09
01:35 PM

replaced base gasket and cylinder o rings,bought the bike used not running,and it didnt have a ring or base gasket,amongest numerous other small parts not a big deal..but the anti freeze? bad jug? heard from a friend about a crank seal? dont really no where to start just want to here it run ya know!  

 
P0PEYE P0PEYE
User | Posts: 51 | Joined: 11/09
Posted: 11/07/09
07:50 PM

You bought the bike used not running....did it have the coolant problem then or is the antifreeze in the combustion chamber a new failure?  
bald as a bean..old as your dad..but rides like a fool

 
sanders sanders
Addict | Posts: 9524 | Joined: 10/08
Posted: 11/07/09
09:38 PM

id say bad head gasket or warped head... possible a bad water pump seal as well
DavidS  
i take a lot of pride in what i am

___________________
ride: 02yz426
local: north east Oregon

terrain type woods with lots of roots & rocks

 
P0PEYE P0PEYE
User | Posts: 51 | Joined: 11/09
Posted: 11/09/09
04:27 PM

You may want to pressure test the cooling system. Borrow a tester. be carefull not to over pressureize.  
bald as a bean..old as your dad..but rides like a fool

 
P0PEYE P0PEYE
User | Posts: 51 | Joined: 11/09
Posted: 11/09/09
04:30 PM

you may also need a torque wrench and check the head bolt torque.  
bald as a bean..old as your dad..but rides like a fool

 

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