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Cyl 2 & 4 misfire

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Old Dec 4, 2008 | 07:54 AM
  #21  
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I had a similar thing happen, and the code came up as a Cyl 3 misfire. after checking everything i pulled the head... turns out I dropped a valve in cyl 3.

damaged the piston and head
 
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Old Dec 4, 2008 | 01:27 PM
  #22  
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OUCH!


Still wish i knew why my pistons were chewed up
 
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Old Dec 4, 2008 | 03:13 PM
  #23  
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Originally Posted by BlueBeast2
OUCH!


Still wish i knew why my pistons were chewed up
I came over to your house and took awl to your pistons... and then broke out the soldering gun too add some uneven spots
 
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Old Dec 4, 2008 | 03:15 PM
  #24  
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Originally Posted by bigster
I followed this tread and i think you're in the right direction. You said that when you changed your cap and rotor that it ran fine for a moment?
Post your results of a compression test, that will give clarity on this subject.
Also, when you change your cap and rotor, change the spark plug & wires as well, costs not that much but then you know that you are safe on that matter (you have to do this anyway at some point in the life of the truck).
Hope this helps!

Greetz,

Bigster
I am needing to change the wires anyway. I replaced them last with Valucraps(even $hitter than Dura-no-lasts) at 120,000. It has 169,000 on it now! I am going to get Taylor 8.2s (in purple!) from Jegs or Summit. But first i am going to change the wires with cheap Valucraps again. If it works, I will box up the Valucraps, take em back to AutoZone, and get the Taylor wires. I will hopefully do a compression test today or tomorrow.
 
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Old Dec 4, 2008 | 03:17 PM
  #25  
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BlueBeast2- Didnt tdrex have the same problem as us?
 
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Old Dec 4, 2008 | 03:18 PM
  #26  
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Maybe the Flux Capacitor isn't getting the necessary 1.21 Gigawatts.
 
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Old Dec 4, 2008 | 03:25 PM
  #27  
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yeah he had a cracked head.


VW with all the lights I have that could be my problem lol

PCnofixer I wouldn't doubt that one bit
 
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Old Dec 4, 2008 | 03:49 PM
  #28  
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Purple, the best thing you can do right now is cut to the chase and run a full compression test. If you're getting consistent misfire codes on #2 & #4 after messing around with the wires, cap, etc., then there's something going on inside those cylinders.

Make sure you pull all of your plugs and set your TB to WOT for the test. I realized I had a bad #8 when I compared it to the others -- #8 was 140 and all the others were 175 to 180. I knew then that I had a problem, and running a leakdown test confirmed it.

Good luck and let us know what your results are.
 
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Old Dec 4, 2008 | 04:10 PM
  #29  
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Ok, I shulda asked this question earlier. Which ones are #2 and 4?

Wow, i feel stupid!
 
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Old Dec 4, 2008 | 04:18 PM
  #30  
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Right bank (pass side) are 2-4-6-8 front to back.

Left bank (driver's side) are 1-3-5-7 front to back.
 
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