Timing Chain Cover Leaking - 2007 Navigator

Discussion in '3rd Gen - 2007 - 2017' started by CarlzExpedition, Dec 12, 2019.

  1. CarlzExpedition

    CarlzExpedition Member

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    My 2007 Navigator has been diagnosed with a leaking timing cover. I was quoted about $1100 to resolve it. We have maintained this vehicle well and intend to keep it for a while as our second vehicle. It is leaking a decent amount of oil when parked, but not so much that I have to top it off between oil changes. Current mileage is 137k miles

    My questions:
    1. Is $1,100 a reasonable price to repair the timing cover leak?
    2. If I proceed with the repair, would it be a good idea to have them replace the timing chain at that time?
     
  2. stamp11127

    stamp11127 Super Moderator Staff Member

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    Why not get the shop manual off ebay, invest in some needed tools and save yourself some money?

    It wouldn't hurt to swap out the timing setup since the cover is already off.

    The is a lady on the site that also has a Navi who is in the middle of tearing down the upper end of the motor to resolve a cylinder compression issue. She can probably give you some pointers.
     
  3. 762mm

    762mm Full Access Members

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    Unless the price is in Pesos, it's a ridiculous amount for a timing chain cover gasket job.

    If the cover itself is damaged and leaking (not a gasket issue), then it's possible the timing chain guides are worn and the chain was so slack that it ate a hole through the cover. In that case you'd need a new timing cover, gasket, chain guides and tensioners, at the very least. Possibly new chains too, if the old ones have stretched from all the slack. The oil pan would then need to be dropped too, in order to remove all the broken pieces and debris from the bottom of the pan and from the oil pickup tube.

    In that case $1100 would sound quite reasonable.


    As already suggested, do it yourself to save money... but find out what the exact problem is first! (where is it leaking?) There are plenty of videos on YouTube on how to do a timing job on Navigators, Expeditions and F-150s.
     
    Last edited: Dec 13, 2019
  4. CarlzExpedition

    CarlzExpedition Member

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    Thanks for the tips guys.

    I have all of the tools for this job, with the exception of the crank pulley removal tool. I definitely like saving money and not afraid to do the job myself. I have changed out all of the spark plugs (had to use extraction tool on one that broke off), coils, replaced the rear air springs and compressor, all brakes, alternator. However right now I don't have much free time with work.

    I pulled up a 4 part youtube video of a mechanic tackling the job and I must say it looks like quite an involved job! It appears that they will need to replace the valve cover gaskets in addition to the timing chain cover gasket.

    I am waiting to hear back on how much additional the timing chain and tensioner service will be additional. I'm hoping not much, as I'm assuming getting to it is the biggest expense
     
  5. RustyOval

    RustyOval Full Access Members

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    If you have to pay someone to do the work, get rid of it because the vehicle is not worth the money. I too had to decide between motor work (timing chains, sprockets, etc. and exhaust manifolds), after talking to my mechanic I decided to throw in the towel and trade in my 09 with 170K on it. $2,200 for timing and oil pump, a low estimate of $1,100 for both exhaust manifolds (if everything goes smoothly).

    We even talked about a reman motor $5-7k installed because there are all the peripheral things that are needed and then you still have the old tranny and differentials. My mechanic has the 5.4 in his truck and he knows what he is doing. IMO what you have is a money pit and consideration should be given to getting another lower milage vehicle.

    We traded on a 2018 and havent looked back even though I really liked the 09.
     
    Trainmaster likes this.
  6. TobyU

    TobyU Full Access Members

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    An 07 with that low of miles is probably is pretty good shape.
    I would not even consider getting rid of it.
    I would probably not do timing components just pull the cover and reseal.
    It is not too involves to pull the cover just plug and chug until you get it everything out of way and off.
    I am way behind of things and lazy so I would go get some Blue Devil Engine Oil stop leak. It is 19.95 but works extremely well.
    Money back guarantee too.
    I have used the money back twice from this company but have used their products with success over 10 times.

    Also what oil are you running in it now? Is it hot there? If you are running a full syn and it is hot and a 5w20 it's a wonder it's not leaking more. Lol...but I don't like 5w20 and full syn will leak more in most leak situations.

    If it were mine I would change the oil to a 5w-30 non synthetic oil and put the recommended amount and maybe a tad bit more (yep I'm an over achiever--not) of the Blue Devil Oil stop leak into in and drive it for at least a month or 750-1000 miles and re-assess the leak.
     
  7. Trainmaster

    Trainmaster Old School Member

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    ...then sell it.
     
  8. TobyU

    TobyU Full Access Members

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    Depends on how much it is leaking. If it stops....keep on truckin'.
     
  9. Hamfisted

    Hamfisted Full Access Members

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    Where on the timing cover is it leaking ? Clean off the area with brake cleaner spray and check the torque on the retaining bolts. The gasket itself is in a channel in the timing cover so it's not going to just slip or blow out. It's an extensive job just to replace the gasket. You might as well do the timing chains and guides, water pump, ( cam phasers, oil pump....) while you're there 'cause that's how much you have to do to get to those components anyway. I just did all this on mine and it's not that much fun. Installing a high volume Melling oil pump and running 10w-30 oil will save your motor in the long run. The good news is the 3V motor is slightly easier to do than the 2V motors because the valve covers are shallower and fewer bolts. Use some super glue in spots to hold the valve cover gaskets in place during re-installation. They slip out of place easily and that'll lead to big oil leaks. If you re-torque the timing cover bolts now, you may be able to seal the small leak you have with some Permatex oil resistant silicone and that would get you by for now. Get some anyway, cause you'll use it if you go any further in the motor.


    https://www.amazon.com/Permatex-821...76504915&sprefix=Permatex+oil+,aps,188&sr=8-1





    [​IMG]
     
  10. JExpedition07

    JExpedition07 Winterized Member Supporting Member

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    I’d fix your Navigator, you have a minor problem and a new truck with its payment and depreciation isn’t going to net you better in this case lol.
     
    Last edited: Dec 16, 2019

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