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8n 12v needs resitor jumped to start

Will not start with out bypassing restor

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Cant get 8n to run. starts but misses. new plugs, crb,distributor, coil, tank shut-off, ign switch, ceramic resister, ballast resister, fresh gas, but has power to ign switch whether on or off.


If it starts but misses meaning it runs but not on all cylinders?.....then,
Are the spark plug wires in the correct firing order?
Are the spark plug wires in good shape?
Is there compression on all cylinders?
If a valve is bad it won't fire smoothly.
If you pull the plugs are any black with carbon?
(a black carbon coated plug will not fire,especially with a 6 volt system)
Is the distributor car attached fully and correctly?
When the distributor cap is off,is there any side play in the distributor shaft?
Is the point gap correct on the points?
Start the tractor cold and feel the spark plugs,the one or two that are colder than the others are the missing cylinders,if two are cold you could try switching those spark plug wires with each other,in case they are mixed up,and if two are missing are side by side you could have a head gasket leak between cylinder problem.
TIP 1, the BEST THING to do on a Ford 8N is to convert it to 12 volts neg ground.Add a alternator,(76 chev pickup alt fits good) leave the starter as it is (it does care if it's positive or neg ground or 12v) and add a 72 dodge ignition resistor in line to a 12 volt coil.(unless your new 12v coil does not need a resistor)
This set up will increase your fuel economy,add power and start instantly in any temp.
TIP 2,you can use unleaded fuel in a Ford 8n as it already has hardened valve seats.
BUT 10% Ethanol fuel is BAD,it can be used, but shut off the fuel at the tank and let the tractor carb run dry before shutting it off if you are not going to use the tractor with in a few days.

May 21, 2017 | Cars & Trucks

1 Answer

My truck won't start


Click means loose or dirty connection. Use a ohm meter, when turning ignition to starting. Should read atleast 12v Read voltage at big termial on starter. If no or low voltage. Check solenoid, both sides to proper voltage.

Mar 25, 2014 | Ford 8n,9n,2n, Tractor Starter With Drive

1 Answer

Set timing on 8n ford tractor!!


Does it have points?
Use a 12V. test light on the dirstibutor terminal to + side of coil. When the test light goes ON,that is the timing at the crackshaft.
Just like the old VW.

Aug 21, 2013 | Ford 8N Tractor

1 Answer

9N won't start unless I jump it, then runs for 20-25 minutes and then dies. Then I have to wait a little bit and jump start it again.


It sounds like you have a bad alternator. Or a bad battery. I would check the battery first. You can take it into autozone or advanced auto and they will check it for you for free.

Feb 08, 2011 | Ford 8n,9n,2n, Tractor Starter With Drive

1 Answer

My oil pressure dropped on my 8N while bush hogging. Then it jumped up and down.


oil pressure vavle in front of the motor is bad or the spring is weak.

Aug 30, 2010 | Ford 8N Tractor

1 Answer

My 92 ford tempo wony start,charged battery, solenoid clicks, pulled starter with wires on, jumped posts and starter spins what now


Most Fords I have worked on use a solonoid. Measure the voltage on the starter motor side when you turn the key. Does it show 12v? The solonoid may be energizing but if the contacts are bad the starter won't get current. Jumping across the two large terminals will also bypass the contacts, see if this will crank the motor. Use a wire the same size as connected to the large terminals. The starter pulls hundreds of amps.

Feb 05, 2010 | Ford Tempo Cars & Trucks

1 Answer

8n (front mount distributor)seems to be frying coils, one day working just fine, next doesn't spark at all, New condenser, plugs, wires, rotor,points, distributor cap. Replaced coil last time seemed to...


Had the same problem, but was my fault for bypassing the ballist resistor (my bad). Anyway, I fried the coil. Read all the posts and bought new 12 volt coil (it has been converted before I got it 13 years ago). New points, condenser, cap, rotor. Now it is just my timing is a little off, but I have strong sparky but not enough to fry my coil again.

If anything, keep the ballist resistor. it is needed to drop the voltage to the coil so it doesn't fry.

Jan 12, 2010 | Ford 8N Tractor

1 Answer

Car wont start, acts like battery is dead. battery shows full charge. full lights, buzzers, etc. put it on charger-didnt start...cleaned cable connections-didnt start...tried to jump with truck-didnt...


Check the battery +12v power connection to the starter is in good order,
Check the ground connection between the battery negative and the engine/starter motor is robust and intact.
If no problem with above, replace the starter motor.

Oct 10, 2009 | 1993 Ford Tempo

2 Answers

Makita 12v starts intermittingly


i would say its the switch!

but i would jump the motor directly to the battery bypassing the switch to be sure

Feb 02, 2009 | Makita 3/8" Dr. 14.4V Cordless Drill Kit

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