Wd 45 help!!!!

Change the wires, cap, rotor and condenser.

And if that doesn't fixit, maybe look for dirt or rust in the fuel system. Had that happen in my 49 WD under load.

Old tractors do not like today's gas.   I'm haveing the same problems with several of mine.

I'd try fresh gas first then maybe a new coil as you have replaced everything else.  If after all this and it still runs poorly then It may be time to do a compression test or look for a sticking valve.

Boy, Dave hit it right on the head there... brand new stuff, right out of the box, worse than the 20-year old parts I'd taken out.

Particularly condensers and points.

I'll second the fuel system comment, with particular attention to the passageway from the tank into the drain petcock, and also the catch screen located in the thread-in fitting on the side of the carb body...

And finally... drain ALL the fuel, and put in new fuel... preferably, as late in the fall as you can (winter formulations). Always remember that ethanol does not naturally MIX with gasoline- it's just 'in suspension', and will settle. It is also hygroscopic... will absorb moisture. Take a glass pickle jar, and pour in a quart of modern gasoline, cap it, and put it on a shelf for two months, and you'll see layers appear... water on the bottom, supersaturated ethanol above that, then straight ethanol, then gasoline. Guess which part goes to the carbeurator first...

If it sounds like a two cyl, then lift a plug wire and see if the engine speed changes. If it does, put it back, and move to the next. When it doesn't change, THAT is the BAD cylinder.

If you have TWO bad cyls, is it possible that the wires are reversed? these old gals run incredibly well on just two... my 'oily B' starts and runs great with two hitting, and the other two belching oil... gotta wear an old hat, because it RAINS on me every time I move it. (needs sleeves, pistons, and rings BAD).

I had a loose wire on the distrubutor that came from the coil...if I remember right, not the big wire that goes to the middle of the dist. cap, but the small wire was loose...it missed alot and even died...at times..finally figured it out.

Another possibility if all else fails...shoot some carburetor cleaner around the manifold intake ports while the tractor is running. It it smooths out, you may have a bad gasket and/or eroded manafold or head.

Thnk you guys so much !! I'm gonna give it a
Ll a try tomorrow!

Justin did you check the manifold gaskets?

dont know if you cked.for it but,ck.the coil where the primary wire plugs into it.ck.the wire on the dist.(coil wire) if you have any green powdery formatoin.you have a built in resistor in that circut.and you get some erratic symptons...

Allis-chalmers wd45 wrote: Well I tried everything today guys different coil, cleaned the carb, put in new fuel, tried a different sediment bowl, checked the wires , i don't know what else to do I give up on her

Well, if you tried everything, then you would have found the problem and fixed it. It sounds more like you solved it the easiest way known to man: Giving up.

The method that seems to work best with this group, is to list all suggestions, and then go through, one suggestion at a time, and check as suggested, test accordingly, and report the results... even those things you noticed, but thought insignificant... of each test. Then read the posts we render in concert with your observations. Typically, two to three goin's round, and you'll have the problem licked.

If you're satisfied to take the easy road, just post photos, price, and location, someone will relieve you of your troubles, spend five minutes fixing it, and drive it away. I would venture a good bet that over 70% of the fellows here have breathed life into a hopeless wreck, and turned it into something solid, reliable, and useful in under two days... and at least a third of those guys did it to engines that wouldn't even TURN when they got 'em.

Guys Im from northern nj, and it has a new manifold and gaskets I don't think they would be bad? I won't give up its just to addicting to keep trying! Tomorrow I'll try the other suggestions and see could the timing possible be off some?

Did you pull the valve cover and make sure everything is okay under there? Rockers and pushrods OK? Proper clearance?

Allis-chalmers wd45 wrote: Guys Im from northern nj, and it has a new manifold and gaskets I don't think they would be bad? I won't give up its just to addicting to keep trying! Tomorrow I'll try the other suggestions and see could the timing possible be off some?

 

AC45, Have you checked which plugs are not firing the engine? find those two offenders and switch plug wires... Might be your looking at rotation on distributer backwards...

 If all the things these fellows have suggested doesn't work,  (which would get a normal tractor back to running) remove all the plugs and turn engine to top dead center on compression stroke and then blow air into spark plug hole... keep fingers from fan and such and listen if you hear nothing, then turn engine to TDC on # 2 cyl. do the same  the to number 4 cyl and finally do number 3 cylinder. No air noise on all cylinders would be great... air coming out exhaust is burnt / warpped/ bad ex valve. If you hear air coming out intake pipe .. bad intake valve.. and if you hear air coming out of the adjoining cylinder, bad head gasket. Or air out radiator cap still bad head gasket.

 

  Had one tractor that the valve train adjusting screw opened up valve and didn't run right... another had bad intake manifold gasket and it didn't run right on two cylinders...  had one with burnt chunk out of ex valve and it 'whopped' along. Had one that had a bad head gasket and it amazed me it ran as good as it did.leaked between #2&3 cyl and into radiator...

  Make sure you have right point gap. should look like about the thinkness of a match book cover.

  When checking gas flow, make sure you run a soup can full through the line / drain plug to make sure you have full flow... and make sure your carb settings are good and the jets are clean.

  Got 190 gas that starts to be weak when inline car filter starts plugging on gas line so I blow it backwards and get rid of dirt and rust and whatever else that is in there.

  Tell the fellows what town your close to in northern NJ. Maybe there is somebody close that can help. ... Good Luck.