Question about 1999 Ford Expedition

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Have a 2000 ford expedition 4.6L. had a sewing machine noise in the engine. . . did some research and found it was more than likely timing chain tensioner. factory installed tensioner guides were completely worn at both ends, and started to wear down the tensioner itself. replaced guides and tensioners, and reassembled. now the truck barely runs, very rough, and knocks. guessing valve timing might be off. . . .. .what now?

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  • wielandsasso Sep 29, 2010

    thanks for the confirmation. . .. i will start on it this weekend. i am just not quite sure how to get the timing down - it is DOHC. I am assuming that the existing timing chains have been stretched out over time. . .. I will get new timing chains. not sure if the car has timing marks - do you have any idea?

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The gears have a dimple in each gear at one tooth only. Align them to were you can have them set were they can be later when installing the chain. Such as 12 o'clock and 6 o'clock positions. A digital picture taken will help the exact location of each gear before you remove them as well. Pictures do tell a story

Posted on Oct 01, 2010

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Hi:

Sir if you get the Timing off even 1-tooth, Theres ways to Cheat and Get it Started.I DO NOT Recommend you doing this:

#1) Lets see if your Valve Timing is Off.BUT NOTE: you DON'T want to Start the Vehicle Before you check your Timing --YOU could Hit your Valves with your Pistons if you already have'nt MAJOR Troble and $$$!

#2) Remove your Coli Wire From your Cap and Coil. Then Remove #1 Spark Plug Put your Finger just Slightly in #1 Spark Plug Hole, Have someone Just Hit the Key on & Off Until your Feel Pressure (Compresstion) try to push your finger out.

#3) Then STOP. Remove your distributor cap and see if your Rotor is lined up to your #1 Spark Plug Wire.

#4) If it is Close to your #1 Plug Wire.Then i don't think your Timing is OFF.

#5) But it sounds like you have accidently Not lined up your cam and Crank Shaft Timing Marks.

#6) Only thing you can do if your Rotor is'nt at #1 Commpression Stroke is to Pull your Distributor out and Rotate it to where you #1 Spark Plug wire is at in your Cap?? If you have the Spark Plug Wires in the Correct order.

#7) Try This but if this does'nt solve your Problem ,You wil have to Start over and Remove your Timing Cover Sprokets and Chain and Line up your Timing
I hope i've helped you out Please let me know by Voting on the Quality of my Solutions i've Given You.
Thank You: From: D_HUBBS

Posted on Sep 29, 2010

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Hi! Yes you can start on the valve timing... This is the best place to start. Please do write back on the progress.

Posted on Sep 29, 2010

  • dj_relly999
    dj_relly999 Sep 30, 2010

    They do have timing marks. I'll get back to you as soon as I found one.

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