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Super WD9

E

Ethan Chamberlain

Member
Hello
i picked up my super wd9 and brought it home yesterday. The motor is stuck, so my plan was to pull the spark plugs and put some PB-Blaster in the cylinders. Plugs number 1,2,and 4 came out fine and looked good, but #3(which is right behind the intake manifold) did not. I could not get the socket on there, so i looked a little closer at the plug. It turns out to be that some moron put a different smaller plug into that one. The part that the socket grips is flush with the head. So i ground down a socket to where i hoped it might work and tried it. End result, the plug is rounded off in a perfect circle in the head. Does anybody have any ideas on how to get this out? Any help is appreciated! Thanks
 
I know everybody is death on EZ-outs, but in this case, I think it would work. Bust the porcelain on the plug, and drill it out so you can use a nice big EZ-out. Spark plugs aren't torqued in as hard as most bolts, and with the large EZ out, you should be able to get it.

And try a combination of ATF and acetone in the cylinders- somebody did a study, and that combination worked better than PB Blaster, Kroil or anything else. Old has been a proponent of ATF for that purpose for years, and adding acetone will make it even better.
 
Ill have to pull the intake manifold to do that. Do the studs twist off on intake manifolds as regularly as they do on exhaust manifolds? When i drill the plug out, am i goin to have to pull the head off of the tractor to get the shavings and pieces of the plug out of the cylinder? Where do you get acetone at? thanks
 
well if you want to fill the cyls. with lube you need to remove the injectors and pour it in. going through the plug chambers does not work. you need to have the gas intake valves open and then blow it in with air.even then it will only go in the cyls. that has an open valve. if the engine is really stuck its not even worth pis-ing around with soaking, as it only takes an hr to get the head off and then go from there.AND then the broken plug can be removed with an easy out.note: these engines take a special long reach plug.expensive too.
 
Your right about the shavings.

"Upon further review", I'm with Rustred, especially if you have to take the intake manifold off anyhow.

Intake not as bad as exhaust- but you can still twist them off if not careful. Soak nuts with PB Blaster or Kroil, if they don't come loose fairly easily, use chisel or "nut-cracker" instead of appling enough force to twist off the stud.
 
I would look at this method carefully before attempting this. and here i am assuming you are a proficent welder. I would break the porcelean off the plug and weld a large nut to the plug base. give every thing a good soaking with kroiloil and let sit for a few days checking that the plug base is always saturated with Kroiloil. After a while take a socket and breaker bar 1/2" drive would be best, and gently try to loosen the plug. the threads are probably stripped but you should be able to clean them up for a new plug to seat properly. good Luck JH
 
Nutcracker, nut splitter, same thing. Sears has them- its a gizmo with a thick blade that you tighten up on one of the "flats" of the nut, and split it. Sure a lot easier than risking a twisted off stud.
 
I agree with rustred. Just go ahead and take the head off. I don't care what you hear on these web sites. You will only get about 10% of the engines unstuck by soaking them. Then the few you do will have stuck rings and/or scored cylinder walls from rust. A good friend did get a JD "G" unstuck with soaking. He then had to change the plugs every parade because it burnt so much oil. He then overhauled it anyway.
With the head off you can get the plug out several ways. 1) Weld the nut on it like some suggested. 2) Take a good STRAIGHT fluted/splined ez out and try it. Not those taper left handed POS. 3) Just go in from the bottom of the head with a small chisel and pick the plug out.
With any of these when done clean the treads out with a tap BEFORE installing the head or new plugs.
To take the head off and check/free the engine up you are only gambling the cost of a head gasket. If you can't afford that then owning/restoring an old tractor is not what you should be doing anyway.
 
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