More 4000 questions

Ok I'm still stumped. Thought I had this thing figured out. It's a 3 cyl 4000 with SOS. So far all new plugs, wires, filters and gas. It has the Holley carb good compression all cylinders in the 180 range according to my gauge. Also put in a new 950cca battery. Now here is my latest issue. It will turn over what I'd call normally for about 10 seconds just long enough for it to hit once or twice but then quickly the starter begins to drag. The tractor is a row crop model. I have good spark at all 3 plugs and the coil jumps a 1/4 inch gap when tested alone. I have read about a disconnect lever. 1 what is it and 2 where is it. I'm a Ford newbie but nowhere near a tractor novice. The po is suppose to be getting the manuals soon
 
1) With the engine not running the SOS is in Park regardless of where the gear selector is. The only way to tow a non-running SOS is to disengage the rear end from the transmission allowing the rear wheels to "freewheel". That is what the disconnect lever is for- to disengage a sliding coupler between the trans and the rear end.
2) The external disconnect lever is located just aft of your right heel when sitting on the tractor.
 
Ok I've been try with the SOS in neutral. Is park on the disconnect? Sorry for seaming ignorant but I guess on the subject of Fords I kinda am.
 
Park is on the gear/speed selector. There is supposed to be a safety switch inside the trans that only allows the starter to engage when the selector is in Park. Maybe the PO bypassed your safety switch.
The disconnect lever does nothing else other than connect/disconnect the sliding driveline coupler.
 

why does it drag after 10 seconds... is it the tranny pumping up and engaging? is it a bad starter, is it a bad battery.. I missed something there. thanks,
 
If everything is good in the ignition and fuel delivery departments, then it should fire in less than 3 seconds when cranking cold unless you've run it out of gas and the fuel pump needs to pump the fuel into the carb first. My '73 4000 with an S-O-S usually starts in less than a second when I'm starting it for the first time in a day. If it's winter it might take 2 or 3 seconds.

Sounds like your choke might not be choking properly. Those updraft intakes need a lot of choke to suck the gas up into the cylinders. Make sure that the choke linkage is correct so that the choke plate is closing fully when you have the choke handle pulled all of the way out.

If you're sure that the choke is functioning properly and it still has a problem, maybe you've got a vacuum leak in the intake system somewhere. Try spraying some starter fluid directly into the carb to get it started and then once it's running try spraying the starter fluid around the outside of the carb and intake manifold to find the leak.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top