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'97 3.9 with no spark

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  #11  
Old 07-30-2011, 10:54 PM
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Originally Posted by FatDodge
Found ur problem.........its a 3.9........just joking
SOMEONE STOLE TWO OF HIS CYLINDERS!!!!!
 
  #12  
Old 07-30-2011, 11:05 PM
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I tried the old cap and rotor, and every combination of old and new, and still nothing. Maybe the coil isn't sending enough power to spark the plugs?
 
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Old 07-30-2011, 11:12 PM
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Stick a spark plug into the end of the coil wire that goes to the cap. Ground it someplace convenient. Give the engine a crank, and see if you get spark there.
 
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Old 07-31-2011, 01:12 PM
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I'm on my own for a few days here, so I have to rig something up so I can see the plug while cranking.
 
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Old 07-31-2011, 01:13 PM
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Make yourself a remote starter switch. All ya gotta do is ground the control terminal for the start relay, so, a bit of wire, (long enough so you can stand where you need to) and a momentary on switch. (only close the circuit while you are holding it.)
 
  #16  
Old 07-31-2011, 02:05 PM
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Ok, I used jumper cables and grounded the spark plug to the battery. Off the coil, it does spark, its an orange spark, but seems a bit inconsistant. Still nothing off a plug wire. I'm going to try the old coil wire and see what happens.
 
  #17  
Old 07-31-2011, 02:17 PM
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Old wire is the same thing. I'm going to take out the cap/rotor again, (getting pretty quick at it now), and test them. Theres gotta be something wrong there.
 
  #18  
Old 07-31-2011, 02:22 PM
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If the plug at the end of the coil wire is firing, either the cap/rotor is bad, or your plug wires are....... I really can't see ALL of them failing at once though..... Wonder if the coil is just getting to weak to jump the gaps?
 
  #19  
Old 07-31-2011, 02:54 PM
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Ok, may have it here. I tested one of the new plug wires, and it reads 1.00 on the 20k range. The same length of old wire reads 8.3. I'll test the rest of the new ones, but it looks like that may be it.
 
  #20  
Old 07-31-2011, 03:17 PM
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Failure yet again. Tried the old coil wire with and old plug wire and nothing. I cleaned up the plug I'm using and set the gap to about .35 and nothing. I hooked a test light between the plug and the jumper cable to ground, and not even a flicker. I don't generally get to mad at this stuff, but now everything seems to be getting a red tinge to it. Not good.....
 


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