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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Problem after spark plug change

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Old Nov 14, 2016 | 09:22 AM
  #1  
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Problem after spark plug change

hey guys I'm new around here.

i just recently got an 86 f150 4x4 with a 300 straight 6 motor, and it's running rough.

Not really planning on using this for much other than a hunting truck.

Last night I disconnected the battery wires and changed the spark plugs and wires to help this thing run a little smoother. I changed them one at a time to make sure I kept the firing order correct.

After getting them changed I went to start the truck and all I get is one pop/ tick sound from around the battery area and nothing else happens. The lights and dash lights all still work.

The he truck had previously started first time every time, what could it be? I feel like it's something simple and I'm just missing it.

Any help would be much appreciated, thanks!
 
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Old Nov 14, 2016 | 11:04 AM
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If it is not turning over I would check & clean all battery cables connection and grounds.

There is a post and maybe a sticky on how to test cables with a volt meter as looking at them you c a n not tell most of the time if bad or not.
Dave - - -
 
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Old Nov 14, 2016 | 11:12 AM
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Thanks Dave!

ill be sure and check out that sticky and check it out when I get off from work.

Those last 2 spark plugs were a booger to break loose. But the first 2 were just kinda wiggling around in there before I replaced them. These new plugs and wires should help tremendously I'm hoping.
 
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Old Nov 14, 2016 | 11:45 AM
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Hey man

i I also have a oil leak coming from a little bell shaped thing that has a red wire with an L shaped connector plugged into it. Any idea what this thing is? It's located right under the oil dip stick tube.
 
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Old Nov 14, 2016 | 12:17 PM
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Originally Posted by Guitarpicker
Hey man

i I also have a oil leak coming from a little bell shaped thing that has a red wire with an L shaped connector plugged into it. Any idea what this thing is? It's located right under the oil dip stick tube.
Sounds like the Oil Pressure Sender/Sensor/Switch for the Gauge/Light.
 
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Old Nov 14, 2016 | 12:47 PM
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Originally Posted by Guitarpicker
Last night I disconnected the battery wires...

... I went to start the truck and all I get is one pop/ tick sound from around the battery area and nothing else happens. The lights and dash lights all still work.

My hunch is you disturbed a marginal connection in one of the battery cables. By chance do you have these bolt-on style battery terminals?:


If so, get rid of them and replace the entire cable with a factory crimped assembly. Those "emergency battery terminals" are great for very specific scenarios, such as needing a paperweight for a stack of important documents. Not so much for reliably delivering the massive current flow a starter will require, though..

Even if you've got factory crimped terminals and they look good, run this voltage drop test to be sure:

https://www.ford-trucks.com/forums/1...w-starter.html

Skip my verbose explanation if you'd like and scroll near the bottom. Three quick meter hookups will tell you everything you need to know about the battery condition and the ability of the starter circuit to handle the huge rush of electrons needed to spin the circuit.

Keep us posted.
 
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Old Nov 14, 2016 | 05:33 PM
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Oil leak is the sending unit for the gauge. Easy to replace.
 
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Old Nov 14, 2016 | 09:52 PM
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Thanks guys for all of your input.

the guides and write ups for the battery problems helped immensely! And the truck turns over!

Now I have a new problem. The truck won't actually start. It just turns and I hear mini back fires while it's turning. When I was having the Pop last night I swapped around the plugs in the distributed cap to match a diagram I found online.

Now i don't know where #1 starts on the distributer cap.

Any Suggestions?
 
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Old Nov 15, 2016 | 06:33 AM
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Originally Posted by Guitarpicker
Thanks guys for all of your input.

the guides and write ups for the battery problems helped immensely! And the truck turns over!

Now I have a new problem. The truck won't actually start. It just turns and I hear mini back fires while it's turning. When I was having the Pop last night I swapped around the plugs in the distributed cap to match a diagram I found online.

Now i don't know where #1 starts on the distributer cap.

Any Suggestions?
first you need to get the motor to TDC. pull #1 plug, front of motor. hold finger over plug hole and bump the starter till sir pushes finger off hole. check timing mark and it should be at TDC also. if not try again with the finger and starter till at TDC.

Now pop the cap and rotor should be pointing to #1 follow firing order and check all plug wires if right.
sorry I don't know firing order or the way the rotor turns would have to look them up.
Dave - - - -
 
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Old Nov 15, 2016 | 10:06 AM
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The firing order is:153624 and the rotor turns clockwise.
 
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Old Nov 15, 2016 | 12:53 PM
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Thanks

Got the firing order correct and got her running.

Now its in the shop getting brakes done.

Thanks for all your help!
 
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Old Nov 15, 2016 | 01:13 PM
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Originally Posted by Guitarpicker
Got the firing order correct and got her running.
Glad to hear the good news. What fixed the no-crank condition?
 
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Old Nov 15, 2016 | 07:02 PM
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Your Breakdown and Guide did

Thank you so much, you are a very smart man!
 
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Old Nov 15, 2016 | 07:37 PM
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Originally Posted by Guitarpicker
Your Breakdown and Guide did

Thank you so much, you are a very smart man!
Oh boy....kr is going to be ....well,.....never mind.
 
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Old Nov 15, 2016 | 07:48 PM
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Originally Posted by Guitarpicker
Your Breakdown and Guide did

Thank you so much, you are a very smart man!

Oh great, now my head is swelling again. I can't fit through the doorway. I'm going to be trapped inside my den again for a while.

Quick, somebody insult me so I get back out. I gotta go real bad! Maybe if I look around I can find an empty Gatorade bottle or something. Dang it, why did I have to get that fancy wicker wastebasket? Why couldn't I have got a cheap plastic one instead? Hope I can hold out until my wife gets home. Only another hour or so...

Back to to your truck, perhaps I should have rephrased my question. What specifically did you fix? Was it a loose connection? A bad crimp?
 
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