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    Thread: Car won't run after timing belt change!?!?

    1. Member
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      03-05-2010 08:02 PM #1
      Solved, see below

      Finish changing my timing belt along with the water pump and thermostat. I used the mark and match method.

      When I went to fire up the it sound and feels like it's only running on one cylinder. My garage also reeks of unburnt gas.

      Evan after having ran the cam timing mark and flywheel mark still line up. The only thing I can think of is that the tensioner tabs were not at 11 o'clock, but at 1 or 2 o'clock. But still tensioned correctly.

      I need help! Does anyone have any suggestions?


      Modified by OverCaffeinated at 9:44 AM 3-9-2010

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    2. Member VWJettaCarat's Avatar
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      03-05-2010 08:13 PM #2
      If all your timing marks line-up perfectly.. did you unplug your spark plug wires? and did you put them back in the correct order? you sure there is nothing you forgot to plug back in... cam sensor? vac lines?
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      03-05-2010 08:19 PM #3
      I didn't unplug any spark plug wires, and I've checked other connections, even ones I didn't touch.

      Where's the cam position sensor?

      Thanks for the help!

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      03-05-2010 08:37 PM #4
      Found the cam position sensor.


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      03-05-2010 10:00 PM #5
      Did you seat the tensioner properly? Isn't there a tab that needs to sit in a recess in the block?

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      03-05-2010 10:40 PM #6
      There doesn't seem to be any obvious spots on the block for the tabs to go.

      But at 11o'clock there is a spot in the head casting for a tab to rest against, although when you go to rotate the tensioner the tabs move away from that spot.

      I'm going to work on moving the tensioner to that 11o'clock position.

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      03-06-2010 02:45 AM #7
      Moving the tensioner didn't help.

      Again even turning over the engine several times the timing marks are still good.

      Tensioner is good and tabs are where they are supposed to be.

      I need help!

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      03-06-2010 04:35 PM #8
      Pulled up some codes.
      p0300
      p0302
      p0304
      p1358

      something has to be disconnected or fried right?

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    9. Member Salsa GTI's Avatar
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      03-06-2010 05:22 PM #9
      need to look those up
      somthing is out of sync

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      03-06-2010 05:31 PM #10
      The first three codes are cylinders not or misfiring.

      The last code is Cylinder 2 Ignition Circuit: Open Circuit

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    11. Member Salsa GTI's Avatar
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      03-06-2010 05:41 PM #11
      did you disconect eny engine grounds???

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      03-06-2010 06:50 PM #12
      Thanks for the input so far guys.

      I've checked every fuse and gone over every connector.

      I used the diy writeup that's hear on the board for reference. And I've reconnected everything I've disconnected.

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      03-06-2010 07:03 PM #13
      If you manhandle the wires you can damage them. At least you didn't get a timing code. Why did you change the belt in the first place? Preventative maintenance or break? Reseat the #2 fuel injector connector.

      Was the car running rough before the belt change? Plugs, wires, coilpack good?


      Modified by FL 2.0L at 7:05 PM 3-6-2010


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      03-06-2010 07:17 PM #14
      I bought a timing belt kit from ecs tuning with an under drive pulley set for preventative maintenance. My car has about 79,000 miles on it now. The car was running fine.

      The only wire I might be concerned about would be the cam position sensor as it is behind a plate that was moved to access the water pump.

      I hate electrical issues, they're so hard to pin point.

      I guess I'll unplug and replug spark plug wires and such.

      Again thanks for the input, any and all is helpful

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      03-07-2010 05:48 PM #15
      Will a VAG-COM scan tell me if a specific sensor or component is bad?
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      03-09-2010 12:42 PM #16
      SOLVED!

      I read through the original diy and found that someone had switched a few hoses. Think, think, think. It suddenly all made sense. My timing marks were on, no sensor or timing faults from vag-com. I went home and tada, I was pumping coolant into my intake manifold. After a quick oil and spark plug change the engine fired right up. With some white smoke out the back of course.

      Here's a pick of the hoses that got switched.

      I still have one question. After a 30 mile drive to work I noticed that the tabs on the tensioner are no longer lined up, but there is still tension on the belt. Is this normal, is lining up the tabs just a starting point for the tensioner?

      Thanks everyone for their input.


      Modified by OverCaffeinated at 9:43 AM 3-9-2010


      Modified by OverCaffeinated at 12:52 PM 3-9-2010

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    17. 03-09-2010 03:40 PM #17
      Good afternoon,

      Is there a spot in the plenum where the ingested coolant could pool? You might want to take a quick look to see if there is a chance of coolant pooling somewhere along the intake tract. Liquids being effectively incompressible can cause mechanical interference and failure, if enough is ingested into a cylinder all at once. Smaller amounts will raise compression and cylinder pressures for the combustion event in which they are present in the chamber, but after that they will likely be harmlessly expelled as white smoke through the exhaust system. If your engine is running nicely now, it is very likely fine, but I suggest taking a minute to consider if there is a large pool of coolant waiting precariously at some position within the intake system.

      JF


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      03-09-2010 03:51 PM #18
      Thanks for the input. I didn't consider those issues. I was caught up in trying to figure out what went wrong and getting it started again.

      I did have quite a bit of white smoke until it all burned out of the exhaust.

      I am kinda of worried about the coolant harming the cat though.

      So far the car seems to be running smoothly.

      I can't imagine that after driving it that there could be any coolant left anywhere.

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