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    VWVortex


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    Thread: Need some help ASAP Please!

    1. Member AWDLAUNCH's Avatar
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      05-08-2012 07:22 PM #1
      I have been working on a 2001 VW Passat 2.8 for a while now. I replaced the engine for a customer. Now its misfiring bad.

      I did a compression check, everything there is good

      Leakdown test - everything good

      Replaced plugs

      Replaced coil pack with known good one

      Replaced spark plug wires with good ones

      Its missing on 1, 5, 6, some times 4, sometimes 3

      I have check all my vaccum lines, no leaks. Sprayed throttle body cleaner every place I can think of, and no change in idle.

      I did replace the timing belt, but that is all good. Start's right up. Just shakes bad.

      I did check for spark at the plug wires and its getting really good spark.

      Any ideas?? HELP!
      Last edited by AWDLAUNCH; 05-08-2012 at 07:29 PM.

    2. Member AWDLAUNCH's Avatar
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      05-09-2012 09:50 AM #2
      Bump

      Sent from my DROID RAZR using Tapatalk 2

    3. Member koidragon1980's Avatar
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      05-09-2012 12:35 PM #3
      Quote Originally Posted by AWDLAUNCH View Post
      I have been working on a 2001 VW Passat 2.8 for a while now. I replaced the engine for a customer. Now its misfiring bad.

      I did a compression check, everything there is good

      Leakdown test - everything good

      Replaced plugs

      Replaced coil pack with known good one

      Replaced spark plug wires with good ones

      Its missing on 1, 5, 6, some times 4, sometimes 3

      I have check all my vaccum lines, no leaks. Sprayed throttle body cleaner every place I can think of, and no change in idle.

      I did replace the timing belt, but that is all good. Start's right up. Just shakes bad.

      I did check for spark at the plug wires and its getting really good spark.

      Any ideas?? HELP!
      have you rechecked the timing? i've seen guys get the timing off by a tooth after doing the belt job. rough idle/misfire issues might be related to this.
      God bless the homicidal maniacs... they make life worthwhile. - George Carlin

    4. Member AWDLAUNCH's Avatar
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      05-09-2012 12:49 PM #4
      Yep, checked it again. Its spot on.

      If timing was off, the valves would hit the pistons, or throw a code

    5. Member koidragon1980's Avatar
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      05-09-2012 01:31 PM #5
      Quote Originally Posted by AWDLAUNCH View Post
      Yep, checked it again. Its spot on.

      If timing was off, the valves would hit the pistons, or throw a code
      what type of plugs did you use? i think oem is either bosch or ngk. i use and prefer ngk, but i've heard of other brands (i.e. champion, etc.) giving people a headache with misfires.

      edit: also check the plug wells for oil. the inner valve cover gaskets have a habit of leaking oil into them and fouling plugs.
      Last edited by koidragon1980; 05-09-2012 at 01:34 PM.
      God bless the homicidal maniacs... they make life worthwhile. - George Carlin

    6. Member AWDLAUNCH's Avatar
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      05-09-2012 01:32 PM #6
      I put in NGK.

      So I had two plug wires crossed, I fixed that, and now the car wont even start WTF

    7. Member koidragon1980's Avatar
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      05-09-2012 01:47 PM #7
      Quote Originally Posted by AWDLAUNCH View Post
      I put in NGK.

      So I had two plug wires crossed, I fixed that, and now the car wont even start WTF
      for the plug wires, i believe the order from back to front should be:

      6-5-4 (driver side)

      3-2-1 (passenger side)

      the coilpack should have a diagram on it that shows where each number connects.

      are there any other codes getting logged besides misfires? any pcv work done to it recently?
      God bless the homicidal maniacs... they make life worthwhile. - George Carlin

    8. Member bcarlo's Avatar
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      A stereo on Indys and STF's thrashin FDR, Silver Raddo SLC and a 98 DE. 95 GSXR for trade /sale
      06-22-2012 12:27 AM #8
      I am just a guy with a skateboard and a halfpipe.

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