2012 250 6.2 eng.
Fleet Mechanic
Joined: Feb 2002
Posts: 1,483
Likes: 273
From: Tulare U.S.A.
I'm not sure exactly what you are asking. Maybe go back a reread your post. Were you pulling a load? Have you checked the oil level? Is it possible that you broke a valve spring? 6.2L are known to brake valve springs if you rev them much on a long pull when loaded. Did you just fill up possible bad gas?
Lead Driver
Joined: Mar 2004
Posts: 5,372
Likes: 108
From: Northern Indiana
Not sure how long it did this. There is such thing know as the 6.2 tick. Mine does it from time to time for 2-3 seconds on start up. Doesn’t matter if it’s cold or run ran. It could be possible you’re experiencing that. Accord to what I read with that situation Ford considers it “normal”.
4wd Low
Joined: Mar 2021
Posts: 13
Likes: 0
I'm not sure exactly what you are asking. Maybe go back a reread your post. Were you pulling a load? Have you checked the oil level? Is it possible that you broke a valve spring? 6.2L are known to brake valve springs if you rev them much on a long pull when loaded. Did you just fill up possible bad gas?
Fleet Mechanic
Joined: Dec 2021
Posts: 1,735
Likes: 1,116
As for the OP, yes a valve spring could be suspect but with the lack of general information there are many other possibilities for a rough running/no start engine.
4wd Low
Joined: Mar 2021
Posts: 13
Likes: 0
Dont worry yourself about it. Very minor problem on the minority of 6.2l engines. No rhyme or reason to date for how and why some valve springs have broken. Its not a widespread or normal failure at all.
As for the OP, yes a valve spring could be suspect but with the lack of general information there are many other possibilities for a rough running/no start engine.
As for the OP, yes a valve spring could be suspect but with the lack of general information there are many other possibilities for a rough running/no start engine.
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Cargo Master
Joined: Dec 2015
Posts: 2,913
Likes: 509
I've flogged my 6.2 all over Colorado at 4500 to 5000rpm - sometimes more - and haven't had any valve spring issues. It's a known problem but I'm not convinced it's related to average RPM.
They're either crappy and gonna fail, or they're good and will last.
They're either crappy and gonna fail, or they're good and will last.
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Fleet Mechanic
Joined: Feb 2002
Posts: 1,483
Likes: 273
From: Tulare U.S.A.
I try to keep mine at or below 4500 RPS. Most people that posted about breaking a valve soring were pulling a grade loaded and spinning the engine hard. The exact RPM seems to vary but 5000 K or better is a common theme.
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