Question about Mercury Cougar

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2000 Mercury Cougar V6 Automatic Got a problem, the spark plug boots were getting wet with oil from thr ring seals on top of the valve cover, took the valve cover off to replace the gasket and the ring seals , and checked the timing chain,, it has 2 camsfafts on each head, and two different chains, each one goes to each one of the heads, now found out that one of them (timing chain) is not tensed, it's loose., just with my fingers it goes up and down, and the other side is very tight, is this normal, or maybe one of the chain tensioners gave up already? thanks.

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  • dklmn66 May 25, 2011

    thanks ,but i need more specific answer , from someone familiar with ford , mercury engines,
    Thanks.

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  • No this is not normal and yes the tensioner needs to be adjusted or replaced if you want this corrected.
  • You have to remove -

  1. Valve cover.
  2. Engine accessories
  3. Harmonic damper
  4. Timing cover
  5. Timing chains
  • Doing this with the engine in your car is going to take a lot of time. This job calls for 12 hours in the shop. This is prime working conditions with all the tools and necessary equipment.

Regards, Tony

Posted on May 25, 2011

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I would say you are right the tensioner has quit or it has slack with the motor some are activated
with oil pressure but you need to did in to it to make sure

hope this helps you bob

Posted on May 24, 2011

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