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Discuss Geo Tracker/Chevy Tracker timing problems in the alt.autos.gm forum at Car Dealer Forums; Just blew the timing belt on my 1994 Tracker. It is a 1.6L 8 valve ...
  1. #1
    rockett_concepts@hotmail.com
    Guest

    Default Geo Tracker/Chevy Tracker timing problems

    Just blew the timing belt on my 1994 Tracker. It is a 1.6L 8 valve
    motor. I am having problems getting it back up and running, are there
    any tricks to it? Does the belt have to be installed for the
    alternator? There are a few timing marks on the cam sprocket and tried
    them all and @ 180 degrees out too. The cylinders have great
    compression and there is spark and gas, only getting backfire, I
    checked dist and the wire routing and all is good there. Any help would

    be appriciated. Please email to: rockett_conce...@hotmail.com. Thanks
    in advance.

    Rock




    › See More: Geo Tracker/Chevy Tracker timing problems

  2. #2
    Mike Marlow
    Guest

    Default Re: Geo Tracker/Chevy Tracker timing problems


    <rockett_concepts@hotmail.com> wrote in message
    news:1167868395.861494.142720@31g2000cwt.googlegro ups.com...

    > Just blew the timing belt on my 1994 Tracker. It is a 1.6L 8 valve
    > motor. I am having problems getting it back up and running, are there
    > any tricks to it? Does the belt have to be installed for the
    > alternator? There are a few timing marks on the cam sprocket and tried
    > them all and @ 180 degrees out too. The cylinders have great
    > compression


    What is "great compression"? I don't know if this is an interference
    engine, but if it is, you'd need to look at the valves. That said, if the
    compression reads to spec on each cylinder, I would not be suspicious of
    valve damage.

    > and there is spark and gas, only getting backfire, I
    > checked dist and the wire routing and all is good there. Any help would
    >


    You did get number one cylinder up to TDC when you aligned the camshaft
    timing marks, right? Can you take a picture and post a link to it, of the
    marks you mention on the camshaft? I have never worked on this particular
    engine, but I'm having a hard time imagining "a few" timing marks on a cam.
    What are you trying to line the mark(s) on the camshaft up with?

    Sorry if I'm asking questions that may be below your skill level, but it's
    hard to tell from your post if you've ever done this kind of work before and
    if you're familiar with timing a cam.

    --

    -Mike-
    mmarlowREMOVE@alltel.net



  3. #3
    Edwin Pawlowski
    Guest

    Default Re: Geo Tracker/Chevy Tracker timing problems


    "Mike Marlow" <mmarlow@alltel.net> wrote in message
    >> Just blew the timing belt on my 1994 Tracker. It is a 1.6L 8 valve
    >> motor. I am having problems getting it back up and running, are there
    >> any tricks to it? Does the belt have to be installed for the
    >> alternator? There are a few timing marks on the cam sprocket and tried
    >> them all and @ 180 degrees out too. The cylinders have great
    >> compression

    >
    > What is "great compression"? I don't know if this is an interference
    > engine, but if it is, you'd need to look at the valves. That said, if the
    > compression reads to spec on each cylinder, I would not be suspicious of
    > valve damage.


    Gates does not list the 8 valve as an interference engine so he was lucky.



  4. #4
    Rockett
    Guest

    Default Re: Geo Tracker/Chevy Tracker timing problems

    The compression was well within spec. I did put #1 on tdc to set the
    cam and check the distributor. I have done many timing jobs (belts and
    chains) to realize this one is a pain in the arse. I will get some pics
    up tonight. Thanks,

    Rock


    Mike Marlow wrote:
    > <rockett_concepts@hotmail.com> wrote in message
    > news:1167868395.861494.142720@31g2000cwt.googlegro ups.com...
    >
    > > Just blew the timing belt on my 1994 Tracker. It is a 1.6L 8 valve
    > > motor. I am having problems getting it back up and running, are there
    > > any tricks to it? Does the belt have to be installed for the
    > > alternator? There are a few timing marks on the cam sprocket and tried
    > > them all and @ 180 degrees out too. The cylinders have great
    > > compression

    >
    > What is "great compression"? I don't know if this is an interference
    > engine, but if it is, you'd need to look at the valves. That said, if the
    > compression reads to spec on each cylinder, I would not be suspicious of
    > valve damage.
    >
    > > and there is spark and gas, only getting backfire, I
    > > checked dist and the wire routing and all is good there. Any help would
    > >

    >
    > You did get number one cylinder up to TDC when you aligned the camshaft
    > timing marks, right? Can you take a picture and post a link to it, of the
    > marks you mention on the camshaft? I have never worked on this particular
    > engine, but I'm having a hard time imagining "a few" timing marks on a cam.
    > What are you trying to line the mark(s) on the camshaft up with?
    >
    > Sorry if I'm asking questions that may be below your skill level, but it's
    > hard to tell from your post if you've ever done this kind of work before and
    > if you're familiar with timing a cam.
    >
    > --
    >
    > -Mike-
    > mmarlowREMOVE@alltel.net



  5. #5
    aarcuda69062
    Guest

    Default Re: Geo Tracker/Chevy Tracker timing problems

    In article
    <1167868395.861494.142720@31g2000cwt.googlegroups. com>,
    rockett_concepts@hotmail.com wrote:

    > Just blew the timing belt on my 1994 Tracker. It is a 1.6L 8 valve
    > motor. I am having problems getting it back up and running, are there
    > any tricks to it? Does the belt have to be installed for the
    > alternator?


    No.

    > There are a few timing marks on the cam sprocket and tried
    > them all and @ 180 degrees out too.


    My information shows only one timing mark on the cam sprocket
    which should be lined up with the notch in the rear of the timing
    belt cover at 12 o'clock. Crankshaft mark is set at 12 o'clock
    also.

    > The cylinders have great
    > compression and there is spark and gas, only getting backfire, I
    > checked dist and the wire routing and all is good there. Any help would
    >
    > be appriciated. Please email to: rockett_conce...@hotmail.com. Thanks
    > in advance.


    When you took the crank pulley off, did you remove the 1 main
    bolt in the center or the 5 bolts around it?
    I've seen the crankshaft key sheared on these things so it may be
    worth checking also.

  6. #6
    Rockett
    Guest

    Default Re: Geo Tracker/Chevy Tracker timing problems

    I removed the one bolt for the harmonic balancer. I will have to look
    at the crankshaft key. thanks for the input.

    Rock

    aarcuda69062 wrote:
    > In article
    > <1167868395.861494.142720@31g2000cwt.googlegroups. com>,
    > rockett_concepts@hotmail.com wrote:
    >
    > > Just blew the timing belt on my 1994 Tracker. It is a 1.6L 8 valve
    > > motor. I am having problems getting it back up and running, are there
    > > any tricks to it? Does the belt have to be installed for the
    > > alternator?

    >
    > No.
    >
    > > There are a few timing marks on the cam sprocket and tried
    > > them all and @ 180 degrees out too.

    >
    > My information shows only one timing mark on the cam sprocket
    > which should be lined up with the notch in the rear of the timing
    > belt cover at 12 o'clock. Crankshaft mark is set at 12 o'clock
    > also.
    >
    > > The cylinders have great
    > > compression and there is spark and gas, only getting backfire, I
    > > checked dist and the wire routing and all is good there. Any help would
    > >
    > > be appriciated. Please email to: rockett_conce...@hotmail.com. Thanks
    > > in advance.

    >
    > When you took the crank pulley off, did you remove the 1 main
    > bolt in the center or the 5 bolts around it?
    > I've seen the crankshaft key sheared on these things so it may be
    > worth checking also.



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