Re: Ford NAA hard starting

Posted by MarkB on December 02, 2000 at 06:27:26 from (64.79.80.143):

In Reply to: Ford NAA hard starting posted by Mark Stanfield on December 01, 2000 at 18:57:29:

A recent experience that I had with my Ford 4000 may help you out. It was sitting outside for several weeks without running, and may have received a little rainwater down the exhaust. At any rate, it wouldn't start, or if it did it wouldn't run for more than few seconds. This tractor had always started instantly in any kind of weather, even without choking.

I did all the usual stuff: Pulled the plugs, cleaned them up, made certain they had a nice hot blue spark; tried using starter fluid to make certain that I didn't have a carburetor problem. No luck. It would crank over great (6V starter on a 12 volt system), but no go.

I came to the conclusion that the valves had to be sticking, probably a little rusty. I finally got the thing started this way: I'd pull the plugs, squirt 5-10 shots of motor oil into the cylinders, put the plugs back in and crank it for 30 seconds or so. Then I'd leave it sit for half an hour while the battery charged and the starter cooled off. Then I'd come back, try to restart it and repeat the whole process. After about 3 days of this treatment, I finally got it to fire up with the help of a little starting fluid. Once I got it started, everything apparently loosened up and it would start instantly.

I now make it a point to start it up a least once a week, and it hasn't given a lick of trouble for several weeks. Based on recommendations here, I also add a little automatic transmission fluid to the gas to keep the top end lubricated.

The engine in my 4000 isn't much different from your NAA. Your Ford ought to start just fine. If you can't get it running, you may need to pull the head and get a valve job.

One other thing. Coil problems seem to be a common thread on these boards. If your spark looks questionable, swap out the coil.

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