Question about 1987 Ford F 250

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1978 ford 351m no spark to # 1,3,5,7 cylinders. New coil, condenser, modual, plugs, wires. I set piston #1 to tdc and checked timing. No one I have talked to seams to have any more ideas. Any help and i would be greatfull.

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Distributor cap

Posted on Apr 18, 2010

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2 Answers

I have a 1987 ford ranger the engine turns over but it wont start


Timing could be 180 degrees out try switching plug leads on distributor i.e. 1&3 2&4

Dec 21, 2014 | 1987 Ford Ranger

1 Answer

How to reset timing on 1992 454 tbi after replacing distributer


You have to put the number 1 cylinder at Top Dead Center of the compression stroke, and then you install the distributor with the rotor pointing to the #1 spark plug wire tower that is on the distributor cap.

Pull the spark plug from number 1 cylinder. You need a helper to turn the engine over by hand (using a socket on the crank pulley), or he can bump the starter over in very short bursts. Put your finger over the spark plug hole. When the piston is rising on the compression stroke, you will feel air pressure on your finger. Now look at the crank pulley and turn the engine on over until the zero degrees mark lines up on the timing pointer. Or you can stick a long straw or similar into the spark plug hole (don't let it drop into the cylinder!) to feel when the piston is at top of travel...see, you feel for pressure build up with finger (piston is rising on compression stroke), when you feel it, turn engine on over by hand until the piston is at top of travel-that is TDC of compression stroke. Now install distributor so that rotor ends up pointing directly to number 1 spark plug wire tower. Then follow firing order -as the rotor turns, it will follow the firing order around the dist. cap.
There are two top dead centers of each piston, tdc of compression stroke and tdc of exhaust stroke- to time the engine, you need tdc of compression-that is when the spark plug fires in the cylinder, so that is when you want the distributor in with the rotor pointing to #1.

Jul 28, 2014 | 1992 Chevrolet C/K 3500

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How to insall distributer on 1966 ford mustang


Okay, you have to set the number 1 cylinder at TDC of its
compression stroke, and then drop in the distributor so the rotor is pointing to the #1 spark plug wire tower. This should start the car, then you could set the timing to spec with a timing light.

There are two TDC's of a cylinder- the compression stroke and the exhaust stroke. To find the compression stroke, take out the #1 cylinder spark plug. Put your finger over the hole. Now either turn the engine over by hand (with a socket on the crankshaft pulley-turn clockwise), OR have a helper bump the starter over in as short bursts as possible. As soon as you feel pressure on your finger- stop turning- the piston in #1 is rising on its compression stroke. Now check the timing pointer or scale by the crank pulley. Turn the engine slowly on over until the notch or mark on the crank pulley is right on the zero degrees mark on the scale. This is TDC of compression stroke-the piston is at top of travel in the cylinder. Put the distributor in so the rotor will be pointing to the #1 spark plug wire.

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1 Answer

Need firng diagram for plug wires to distribor on 351M Ford * made in 1081


Hi there:
I suggest to check this diagram on...
Ford Engines: 5.0L HO, 351W, 351M, 351C, 400


9_24_2012_5_29_19_pm.jpg

Ford Engines: 5.0L HO, 351W, 351M, 351C, 400:
Rotation: Counter-clockwise
Firing Order: 1-3-7-2-6-5-4-8


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Sep 23, 2012 | Ford F-150 Cars & Trucks

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I need the diagram for plug wiring for 1992 ford tempo


Firing order is 1-3-4-2 Please rate if this helps

Installation of wires
  1. Whenever a high tension wire is removed for any reason from a spark plug, coil or distributor cap, or a new high tension wire is installed, Silicone Dielectric Compound WA-10, D7AZ-19A331-A (ESE-M1C171-A) or equivalent must be applied to boot before it is reconnected. Using a small clean tool, coat entire interior surface of boot with Silicone Dielectric Compound WA-10, D7AZ-19A331-A (ESE-M1C171-A) or equivalent.
  1. Insert each wire on proper terminal of distributor cap. Ensure wires are all the way down over their terminals. The No. 1 terminal is identified on cap. Install wires starting with No. 1 terminal.
  1. Remove wire retaining brackets from old high tension wire set and install them on new set in same relative position. Install wires in brackets on valve rocker arm covers.
  1. Connect wires to proper spark plugs.
  1. Install coil wire.


Installation of distributor
Before installing distributor, visually inspect distributor. Inspect O-ring. It should fit tightly and be free of cuts. The drive gear should be free of nicks, cracks and excessive wear. Rotate distributor drive shaft. It should move freely, without binding.
  1. To install distributor correctly, No. 1 piston must be at Top Dead Center (TDC) of compression stroke. Remove No. 1 cylinder spark plug and rotate engine clockwise until No. 1 piston is on the compression stroke.
  1. With No. 1 piston on compression stroke, align timing pointer with TDC on the crankshaft damper.
  1. Align locating boss on rotor with hole on armature. Fully seat rotor on distributor shaft.
  1. Rotate distributor shaft so blade on rotor is pointing toward mark on distributor base, that was previously made in Step 2 of the Removal procedure.
  1. While installing distributor, continue rotating rotor slightly so leading edge of the vane is centered in vane switch stator assembly.
  1. Rotate distributor in block to align leading edge of vane and vane switch stator assembly. Verify rotor is pointing at No. 1 mark on distributor base. If vane and vane switch stator cannot be aligned by rotating distributor in cylinder block, remove distributor enough to just disengage distributor gear from camshaft gear. Rotate rotor enough to engage distributor gear on another tooth of camshaft gear. Repeat Step 1 if necessary.
  1. Install distributor hold-down clamp and bolt. Tighten bolt, but leave it loose enough to rotate distributor.
  1. Install distributor cap, No. 1 spark plug and ignition wires. Check that ignition wires are securely connected to the cap and spark plugs. Tighten distributor cap hold-down screws to 2.0-2.6 Nm (18-23 lb-in).
  1. Reconnect distributor to wiring harness.
  1. Set initial timing according to procedures found in Section 13A of the Powertrain Control/Emissions Diagnosis Manual .
  1. After timing is set, tighten distributor hold-down bolts to 23-34 Nm (17-25 lb-ft).
  1. Recheck initial timing. Adjust if necessary.

Oct 11, 2011 | 1992 Ford Tempo

1 Answer

FORD cortina 3.0L V6 starting problems.recon tops new HTleads,plugs ,points,condenser,rotor.strong spark at contacts but weak spark at spark plugs.new carburetor .dont mis- or backfire.valve and...


Have a look at the coil and its supply lead, standard it has a 9v coil and a resistor wire in the harness, this gives trouble ar resistor wire is odd and will not solder or weld and its expansion when hot loosens crimps! If you put 12 volts into a 9v coil it overwhelms (magneticly) the windings and gives a poor spark, also burns the points.

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2 Answers

2001 Chevy Malibu, 89,000 miles, 3.1 engine, won't start


Had there been a distributor like the earlier models it would be the one at fault. However now microchips control that aspect, the problem being synchronizing with the cam shaft rotation, the injector valves being controlled electronically are not opening & closing as per the compression in the cylinders leading to un-synchronized firing. Thus preventing the engine to start & hold a rhythm. This can happen overnight if the insulation has given way due to condensation, contact, etc. It's basically an electrical problem & I am afraid that the wiring will have to be checked thoroughly again meaning repeat of many of the tests which were carried out plus a replacement of the wiring near & around the induction coil & the chip involved. Hope this helps....sodeep

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3 Answers

Where does number 1 piston need to be..do u go off that or piston 8


#1 should be all the way up.This is called TDC(Top Dead Center)

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1 Answer

My bronco has a 351m. it will not start unless i advance the timing alot. after i get it running i only have spark to #2,4,6,and 8 cylinders. I Have replaced the coil, condenser, wires, modual, cap, rotor....


What firing order are you using. It should be 13726548. If you still have no spark on 1-3-5-7 then I would say the distributor is junk. As for the timing, I wouldn't worry about that yet until you get it running on all 8. But it might have a jumped timing chain.

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Ford 351W


I agree, jumped timing. Check to make sure the dist is tight. Than check for tdc on the #1 cylinder. When the #1 cyl is TDC the rotor should be pointing to that wire on the cap. Take the cap off while checking. Also is easier to turn motor by hand without plugs in motor.

Jul 29, 2008 | 1966 Ford Mustang

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