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Farmall & IHC Tractors Discussion Forum
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51 Farmall H I need help !

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Guff

07-18-2006 12:02:50




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Ever since I scaped and blew off with air, then power washed my Super H, it won"t run right. Probably the first time it has been cleaned up in 50 years. I wrapped the distributor and wires in plastic and tried to avoid using water in that area.
I have tried all the basics:
Cleaned, checked & rechecked the distributor, points, cap, wires, plugs.
Visually checked all and replaced one wire on the ingnition system.
Drained and replaced the fuel, drained fuel line and carb.
It starts (need to advance throttle way up) and runs fairly smooth at low idle, increase RPM and it becomes rough. Try to drive it and it really starts missing and sputtering. At a fast idle it will run rough, I pulled off one spark plug wire at a time and there was no change, no single plug made it run worse... Should I pull the carb and clean it? I think its something with the ignition, should I take the coil off and have it checked or maybe get new wires and a cap? The points and condensor are 6 to 7 years old (wires and cap too) but have less than 100 hrs on them.

Any tips or suggestions would be appreciated.

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Brownie 45

07-18-2006 15:06:05




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 Re: 51 Farmall H I need help ! in reply to Guff, 07-18-2006 12:02:50  
Use of a hair dryer on ignition parts really speeds up the process.



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Bob M

07-18-2006 12:23:16




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 Re: 51 Farmall H I need help ! in reply to Guff, 07-18-2006 12:02:50  
I’ve had similar problems several times after pressure washing my tractors. Problem was the power washer got a bit of water got into the ignition despite the bagging. A few suggestions:

Remove ALL the high voltage wires (note where each one goes first!) and set ‘em in the sun for a few hours to dry. If the wires are ‘RF surpression’ (resistor) type, throw ‘em away and replace with solid copper core wires.

Remove the distributor cap, rotor and breaker point dust cover. Thoroughly wipe each part clean with a dry cloth. Then leave the distributor open for a few hours to air dry inside. While the distributor is apart check (and reset if necessary) the point gap to .020”.

Also with a dry cloth thoroughly clean off the high voltage terminal end of the coil.

Remove each spark plug and wipe clean it’s external insulator. If there’s any fouling evident on the plug electrodes toss the plugs and replace with new.

Finally put it all back together and fire it up. Chances are it’ll now run fine.

Good luck!

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old

07-18-2006 12:11:41




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 Re: 51 Farmall H I need help ! in reply to Guff, 07-18-2006 12:02:50  
Have you checked/cleaned out the air cleaner since you did that?? You might have water in the air cleaner oil and if so that would make if run ruff.



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Guff

07-19-2006 05:35:32




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 Re: 51 Farmall H I need help ! in reply to old, 07-18-2006 12:11:41  
Yep, I dumped out the old oil, wiped everything clean and put in fresh. It didn't help, but needed to be done anyway. Thanx



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