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6.0L Power Stroke Engine and Drivetrain Discussion of the 6.0L Power Stroke diesel engine and drivetrain in the 2003-Up Super Duties and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.

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Old 04-02-2009, 11:51 AM   #1 (permalink)
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Cracked Rocker Arm Bridges

Well, it just gets better, or should I say worse. I put my 2006 F250 6.0 in the shop to get the HPO leak issue fixed and while they had the valve covers and oil manifold off, the Tech noticed something strange. A total of 8 rocker arm "bridges" are CRACKED!!!! See pics below. Look at the arm that spans the valves and has "609" stamped on it. 105K miles on engine with no issues until this. This motor has been BABIED after lessons learned on my '04. No chip/programmer, oil changes every 4000 miles, and fuel filters changed evry other oil change. The motor runs GREAT, for now and wondering if I should just get rid of it now that the HPO leak is fixed, and get a new one or spend the $5000 to fix it. Advise would be appreciated.







Last edited by Just1more; 04-03-2009 at 09:49 AM.
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Old 04-02-2009, 02:27 PM   #2 (permalink)
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I would be greatly surprised if they are cracked. They are stamped from steel plate/sheets. I would expect them to bend or flower before they would crack. I am sorry i don't see any cracks just a stamping ridge in the left most rocker arm on the bottom image. I would ask many many more questions before giving the ok to replace any of them. I would have one removed, take it to a machine shop and have it magnafluxed or at least get their opinion. Now a days the dealers are working hard to drum up business. You have to be careful.
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Old 04-02-2009, 02:32 PM   #3 (permalink)
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I would be greatly surprised if they are cracked. They are stamped from steel plate/sheets. I would expect them to bend or flower before they would crack. I am sorry i don't see any cracks just a stamping ridge in the left most rocker arm on the bottom image. I would ask many many more questions before giving the ok to replace any of them. I would have one removed, take it to a machine shop and have it magnafluxed or at least get their opinion. Now a days the dealers are working hard to drum up business. You have to be careful.
You're looking at the wrong part. Look at the part that spans the valves. The little arm that says "609" on it. They are CRACKED.

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Old 04-02-2009, 02:47 PM   #4 (permalink)
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Ok i see it now. That is interesting. Is it only the one? I would not replace any that are not bad. I also would not consider getting rid of the truck because of this. See what one of the tech say i can't believe this is a common problem.
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Old 04-02-2009, 04:42 PM   #5 (permalink)
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Ok i see it now. That is interesting. Is it only the one? I would not replace any that are not bad. I also would not consider getting rid of the truck because of this. See what one of the tech say i can't believe this is a common problem.
No. There are a total of 8 that are cracked and it is not specific to exhaust or intake. My tech recommended changing them all. The part itself is only $4.50 he said. He also stated that he has not seen this before. He has heard of a few, but he hasn't seen them.
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Old 04-02-2009, 05:08 PM   #6 (permalink)
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ok maybe i dont understand,each rocker arm is 4.50 each x8=36.00 how does the dealer figure 5000 to fix?
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Old 04-02-2009, 05:37 PM   #7 (permalink)
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ok maybe i dont understand,each rocker arm is 4.50 each x8=36.00 how does the dealer figure 5000 to fix?
Because they are going to pull the body, pull the heads, replace the head gaskets. Basically, all labor. $5000 is probably a little on the high side. I had an '04 6.0 that blew the headgaskets due to being chipped and it took the EGR Cooler with it and the turbo. That cost $5600.00.
The cost of this repair to my '06 will probably be around $4200.00
Still sucks.

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Old 04-02-2009, 08:34 PM   #8 (permalink)
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well if your gonna go that far do studs while its apart.
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2002 f250 lariat 7.3 200k(motor has 170k)
original 4r100 tranny....200k and counting
knock on wood......
tony wildman chip......
stock,economy,daily,towing,extreme,smoke.
red elc good for 150k
4r100 1-2 2-3 3-4sonnax accumulator valves,.427 sonnax line pressure mod valve
4.125"yes thats 4 1/8" diy tymar intake(size matters...lol)
AIH delete,ccv delete,zoodad mod,
4" exhaust no muff
built my own leafs for 4.0 of lift!!!!!!
18" xd bronze revolvers with 325 nittos to wrap them
isspro pyro and boost guages on pillar mount....
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Old 04-02-2009, 09:42 PM   #9 (permalink)
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thoose things always look cracked find a new tech, i hope your not getting them replaced. truck probly wouldnt run if they were cracked, they would break and the valvew wouldnt open.
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Old 04-02-2009, 09:53 PM   #10 (permalink)
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thoose things always look cracked find a new tech, i hope your not getting them replaced. truck probly wouldnt run if they were cracked, they would break and the valvew wouldnt open.
Then why are they all not like that? Some of them look fine, the others are defientely cracked. 2 on passenger side, 6 on drivers side. I felt them and looked at them from the side with a boroscope. The Service Manager at the dealer where I bought it said he has seen this before but it is not a common occurrence. The Dealer is a close family friend and they are not doing the work but I sent him the pics. I trust his judgement. Would you drive a truck with a condition like this and still have a warm and fuzzy feeling inside? I can't risk it.
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Old 04-02-2009, 10:11 PM   #11 (permalink)
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I can see it. I would replace them.
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Old 04-02-2009, 10:54 PM   #12 (permalink)
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rocker arms them selves break, thats what hes seen not thoose if you want to spend them 5 grand for nothing go right ahead but im telling you theres nothing wrong with them, tell them to look at the rest of the trucks when they take the valve covers off and they will most likley look like that too.
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90 mustang 347 race car.

05 f250 red supercab 6.0, suncoast auto trans, 4x4, long bed fx4, grey interior. atc 275cc injectors, turbonetics ceramic coated 70mm turbo, head studs, aeromotive fuel system, sct with innovative tunes, dual 5" stacks.
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Old 04-02-2009, 10:57 PM   #13 (permalink)
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thats the way theyre made, ill bet if you go buy them at the dealer and open the box some will look like that. ive probly only seen about 500 of them since the 6.0 has been out.
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90 mustang 347 race car.

05 f250 red supercab 6.0, suncoast auto trans, 4x4, long bed fx4, grey interior. atc 275cc injectors, turbonetics ceramic coated 70mm turbo, head studs, aeromotive fuel system, sct with innovative tunes, dual 5" stacks.
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Old 04-03-2009, 06:57 AM   #14 (permalink)
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thats the way theyre made, ill bet if you go buy them at the dealer and open the box some will look like that. ive probly only seen about 500 of them since the 6.0 has been out.
Perhaps I need to be more specific. It is the Rocker Arm "Bridge" (the part that spans the 2 valves) that is cracked. Look at it again and you will agree.
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Old 04-03-2009, 12:04 PM   #15 (permalink)
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I think what he is saying is that they all look like that. You may consider having the dealer order a set and just look at them (I would call them pillow blocks but i suspect they have an actual name). It is possible that that is a stamping artifact and if you were to pull it out it is not really cracked but a little extra steel sitting on the surface making it look that way. Since they are $5 a piece, go ahead and order a set of 16 and look at the new ones. If a couple also have the artifact then you know it is common and not a bad part. Then the dealer can send them back. if they are all perfect then you will know yours need to be replaced.
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