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spark plug problems

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Old Sep 3, 2007 | 05:29 PM
  #1  
whitetail hitman's Avatar
whitetail hitman
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spark plug problems

hey yall

i just installed new plugs, wires, distrubiter cap and button, on my 1990 f-150 they exact way it was, and now its not wanting to start.

its an EFI 302 5.0

any suggestions?
 
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Old Sep 3, 2007 | 05:45 PM
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does it turn over? spark? fuel?

give more details.

did you leave out the rotor?
 
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Old Sep 3, 2007 | 05:58 PM
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it turns over, sparks, but its almost like its missing a few cylenders. should i take the cap wire off and try to start it over at TDC?
 
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Old Sep 3, 2007 | 06:03 PM
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try starting fluid.

double check firing order.

check inertia switch.
 
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Old Sep 3, 2007 | 07:34 PM
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I did this once many years ago on a 289 cu inch, and had the same problem. Turns out I had them in the right order, I just started one hole off.
Was so embarrassing.
Good Luck Frank
 
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Old Sep 3, 2007 | 07:45 PM
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+1 on re-checking the firing order

Mike
 
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Old Sep 3, 2007 | 07:50 PM
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Lightbulb

yeah definately recheck the firing order and make sure the plugs wires are in snug.
 
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Old Sep 4, 2007 | 12:45 PM
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ok im about to recheck the firing order, if that dont work ill try some more process of elimination.
 
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Old Sep 4, 2007 | 12:51 PM
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Also make sure you're going in the right direction. If I remember, the wires run CounterClockwise when looking at the top of the distributor and the #1 terminal is at or near the cap clip on the R/H side looking from the front of the vehicle.
 
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Old Sep 4, 2007 | 01:42 PM
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frustration

Originally Posted by fmr9
I did this once many years ago on a 289 cu inch, and had the same problem. Turns out I had them in the right order, I just started one hole off.
Was so embarrassing.
Good Luck Frank
i started with #1 on the marked #1 on the position marked #1 on the distrubitor cap, and worked all the way around the cap counter clockwise in firing order, still nothing.

it cranks fine it just wont start

it feels like all the wires are crossed but they arent.

also when i got my engine rebuilt, my cam was installed 180 out. maybe that has something to do with it?
 

Last edited by whitetail hitman; Sep 4, 2007 at 01:46 PM.
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Old Sep 4, 2007 | 03:04 PM
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you never said if you tried starting fluid.
 
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Old Sep 4, 2007 | 11:56 PM
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its efi.

i figured out the problem but its still running rough, i just had the trans. rebuilt a few months ago and havent had any problems, maybe its something to do with the air check valve.

im thinkin towards an exorcism
 
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Old Sep 5, 2007 | 08:20 AM
  #13  
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1-5-4-2-6-3-7-8 right?

4 8
3 7
2 6
1 5
Front of engine

I'm sure you have it right, but it can't hurt to triple check...

Also have a look around and make sure nothing got unplugged accidentally or forgot to plug back in when you were finished. Since it just started when you changed plugs/wires/cap/rotor, it is most likely something to do with replacing those things.
 
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Old Sep 6, 2007 | 04:17 PM
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i gave up on trying to fix it myself and decided to take it to a shop around here. it turns out i have a bad injector. ill know something my tomorrow.
 
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Old Nov 26, 2009 | 02:57 PM
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I have a major problem and hope some one can help. I have a 1989 F-250 the plugs must be original as two have rusted to the point were the plugs have broken leaving the grounding electrode stuck in block. I have used an ez out, deep creep heat, cussing and screaming any other ideas outside of the removal of heads
 
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