Cylinders not firing

Tiny
JDMCL
  • MEMBER
  • 1985 FORD MUSTANG
  • V8
  • 2WD
  • MANUAL
I have a 1985 Ford Mustang GT and some of the cylinders are not firing. All I have done is put in new spark plugs. Im not really wanting to invest to much money until I know what it is. Any advice?
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Wednesday, April 13th, 2011 AT 2:16 AM

4 Replies

Tiny
CJ MEDEVAC
  • EXPERT
Reason for installing plugs initially?

Did you do them one at a time?

Did you check and set the gaps correctly?

Did you maybe mix up the wires?

Are the ends of the wires snapped firmly in place?

Maybe you damaged wires when removing them?

Your Turn

The Medic
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Wednesday, April 13th, 2011 AT 2:41 AM
Tiny
JDMCL
  • MEMBER
That is the reason I changed the plugs. All of the wires are in the correct spots and I'm pretty sure the firing order is right. I was told to gap them at.044 and yes I did them one at a time.
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Wednesday, April 13th, 2011 AT 9:56 AM
Tiny
CJ MEDEVAC
  • EXPERT
Here's the diagram--keep us posted--The Medic
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Wednesday, April 13th, 2011 AT 5:41 PM
Tiny
CJ MEDEVAC
  • EXPERT
Did you substitute the wires?

Dependent on where you got the wire set, I always get the "lifetime" warranty stuff, they never give me a hard time, taking things back! Maybe yours are too?

Here's a small sample my CJ5 warranty receipt book (1 for each vehicle)--mostly lifetime, 1 year and others, keeper stuff, like the part #'s, of my engine rebuild (like push rod lengths, etc. They can never tell me they cannot find it, or I'm in not in the system. I copy all of the "Fading Thermal ones", and staple the original behind it.90% of my CJ5 has a lifetime warranty! I never let them keep a receipt, I let them copy for their use! I do have some old ones! Examples: Radiator, water pump, master cylinder, headers, plug wires, ignition module, starter, alternator, fuel pump, distributor, 3 sets of drum brakes (same for all axles, I keep a spare set at home, and keep a spare fuel pump, coil, ign. Module, in the Jeep for me or another broke down Jeeper! (Or Ford))--That's not all, there's more! I seldom have to buy "Normal Breaking Parts" they're under warranty!--The Medic
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Wednesday, April 13th, 2011 AT 6:16 PM

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