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Old 09-30-2013
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Timing chain problems?

My 04 started making a "tick" last winter and never gone away. It is more noticeable on start up and gets less noticeable after warm up, but is still there. Also, I have noticed less power and a slight drop in MPG.

I ran 1/4 bottle of sea foam for about 200 miles and changed the oil, in hopes it was a gummed up injector, but no luck


I have read some thing on the timing chains, guides can be an issue, does this sound like my problem? Is there FIX or would I be putting the same inferior parts back in?

O, tick started at 140k
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Old 09-30-2013
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The infamous timing chain issue is usually described as "marbles in a can"

Does that sound like it?

I've heard of other engine ticks usually associated with lifters(I think).
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Old 09-30-2013
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Last edited by Diesel_Brad; 09-30-2013 at 08:41 PM.
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Old 09-30-2013
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Hopefully you can do it yourself. Friend of mine had his done. $1100 repair bill. That was even doing it at a friends shop
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Old 10-01-2013
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Quote:
Originally Posted by 01RangerEdge View Post
Hopefully you can do it yourself. Friend of mine had his done. $1100 repair bill. That was even doing it at a friends shop
Even if it is twice as hard as the vids show, it will be a 3 hour project at most.

Ordered the chain tensioners from ford last night.
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Old 10-01-2013
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I guess I was under the impression it was resolved in 2003. The timing chain was only an issue in 2001-2002 and some 2003s. I know my 03 did rattle some from time to time but it wasnt anything to be concerned about.

Brad Im sure you can replace it in 3hrs or less. :)
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Old 10-01-2013
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interesting. I always was under the impression that it was the guides that caused the noise.

how much were they? I might replace mine as well since mine are loud for a second or so on cold starts
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Old 10-01-2013
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I've heard of the timing chain issue happening in an 07. But it seems the most prominent issue was 01-02.5
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Old 10-01-2013
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well, for what its worth, my 03 makes a similar noise to that explorer on cold starts, but not nearly as bad or loud.

I dont remember my 02 being that bad either, but it did make a ton on noise between 2.5-3k rpm's.


anyone know that the motorcraft part numbers are for these chain tensioners ?
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Old 10-01-2013
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I ordered them from my ford dealer late last night, so they should be here tomorrow.

IIRC he said they were under 90 for the pair
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Old 10-01-2013
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Yea, if you can do it yourself, you will save a ton.

I'm glad that my 01 hasn't had this issue yet. 147K miles and no tick or rattle. Hopefully that's a sign this motor will last me. Well, long enough I guess until I either supercharge or V8 swap
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Old 10-01-2013
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Timing chain rattle can best be heard in second gear around 2,500 rpm right before the 2-3 up-shift. It sounds similar to spark knock.

Last edited by karrbass4life; 10-01-2013 at 09:18 PM.
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Old 10-01-2013
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Quote:
Originally Posted by ranger024x4 View Post
well, for what its worth, my 03 makes a similar noise to that explorer on cold starts, but not nearly as bad or loud.

I dont remember my 02 being that bad either, but it did make a ton on noise between 2.5-3k rpm's.


anyone know that the motorcraft part numbers are for these chain tensioners ?
I may be able to get them tomorrow. I looked in the workshop manual and only found the torque specs at 32 lb-ft for both (44nm)


edit i got them.

6K254A: $92.85
6K254B: $73.30



Last edited by 99offroadrngr; 10-01-2013 at 11:16 PM.
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Old 10-02-2013
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thanks man.

looks like the best i can find is 125 shipped for the pair
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Old 10-07-2013
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Well I just put them in today. 3 hour job my A S S.
I started at 3, finished, changed my oil, greased the front end, rotated the tires, adjusted the rear brakes and washed the truck. it in now 5:50.

SIMPLE job. The hardest part is getting to the drivers side top side one.

I still have some noise under the drivers valve cover. I am going to have to pull it and see If I see something out of the ordinary

Part numbers
7U3-6K254-B Drivers

7U3Z-6K254-A Passenger
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  #16  
Old 10-11-2013
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Pulled valve cover the other day.
Started engine and listened with pry bar.
TICK was coming from front cam bearing.

I figured the lash tensioner was not "pumping" up, so I ordered 6 new ones.

Today while changing them, Spinning engine overI noticed my problem .#1 cam lobe was failing



I orded a cam and 6 new rockers.

My problem is now, how do I go about timing it? Do I HAVE to pull the front cover?

Or can I do it with just the valve cover off?
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Timing chain problems?-img_0378_zps144a272b.jpg  

Last edited by Diesel_Brad; 10-11-2013 at 09:00 PM.
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  #17  
Old 12-21-2015
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Wanted to update the thread.

When restoring the truck, I had the engine out

Before I bought it( 70k) someone put a junk yard engine it.
So i am not sure what year the engine actually is
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Old 12-21-2015
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Were you able to time it without pulling the front cover?
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  #19  
Old 12-22-2015
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Quote:
Originally Posted by rolsmojave3 View Post
Were you able to time it without pulling the front cover?
yes. All I had off was the valve covers to time it
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