Re: Need wiring schematic showing fuel tank to gauge in...
There should be a wire that connects to the gas tank sending unit and maybe another wire connected to a spade terminal that could be screwed down to the in-tank sending unit. The brown wire from your gas tank sending unit goes to the back of the dash guage. All the gas tank sending unit does is give a "ground" signal to the dash guage. Whatever you do, do not connect the brown wire to a positive 12 volt wire as sending 12 volts through the gas tank sender will explode the gas tank! Take a look at this website and it will all clear up for you.
You did not say if your dash guage is wires with a plug-in or single wires connecting it. If what i've given you here is not enough to fix the whole problem then respond back with how does the wires connect to the back of the guage. Good Luck!
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The link above is just one of a dozen or more very helpful websites for Ford 8n tractors.
The original 8n tractor had a six volt battery with positive ground (this is different than most automobiles that have a negative ground). The starter solenoid is energized via the ignition switch and the large starter button in front of the gear shift, the small wires going to the solenoid energize a coil which "pulls in" and completes a circuit that then provides 6 volts directly to the starter motor through a large, heavy gauge wire. The smaller wires connect to the two terminals on the top of the solenoid and the heavy wire goes to the larger post on the solenoid and originates from the negative post of the battery... Hope this helps. There are many, many schematics and pictures available on the "net" The Ford 8n community is very large and extremely helpful....Good Luck
Sounds like it might be starved for either air or fuel. Have you made sure there is full gas flow from the tank to the carb? Also recheck the needle valve regulating gas flow into the carb. May be that a speck of trash is partially plugging that flow to carb. Should have in-line fuel filter (add on) in addition to the bowl 'filter
Cloc wise as you're standing in front of the vehicle looking at the engine....(also engine front to back)...the cylinder bank on the left is numbers 2, 4, 6, 8 and the cylinder bank on the right is 1, 3, 5, 7....The spark plug wire order on the cap is 1, 8, 4, 3, 6, 5, 7, 2....Starting with number 1 spark plug wire on the cap being placed on the 2nd distributor post clockwise away from where the electrical socket is on the cap.
This sounds like a bad fuel pump to me. The only way to be sure is to check the fuel pressure when cold, probably around 45 PSI. Then when it get hot it will drop way down to 10 or 15 PSI. Check the pressure if you can, or change the fuel pump.
autopartswarehouse.com and autozone.com are some of the better/cheapest sites. Both sites have excellent OEM replacements. LMC has a great selection but slighlty overpriced but if you can't find what your looking for, LMC should have it. Good Luck.22
CHECK THE SENDING UNIT FROM THE FUEL TANK. GET A "D" CELL BATTERY AND CONNECT THE WIRES FROM THE SENDING UNIT DOWN BY THE FUEL TANK. ONE WIRE TO THE POSITIVE END AND THE OTHER TO THE NEGATIVE END OF THE BATTERY. HAVE SOMEONE IN THE CAB VERIFY THAT THE FUEL GAGE MOVES. IF IT DOES THEN YOUR SENDING UNIT IN THE FUEL TANK NEEDS TO BE REPLACED. THIS IS A VERY COMMON PROBLEM AND AN EASY FIX.
disconnect all linesfrom fuel pump remember where they came from remove the two bolts (some have 3)remove pump catch rod that comes out clean gasket surface glue new gasket to new pump cover rod with heavy grease insert rod if you used enough grease it will stay on its own install pump being careful to keep mounting surfaces clean reinstall bolts put lines back on crank over about 4 times no longer than 15 seconds if engine doesn't prime prime carb start done check for leaks