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Message: <blockquote data-quote="Augster" data-source="post: 2095161" data-attributes="member: 19867">There's no "preventative" maintenance that can be done with springs; you either replace them all in advance at some arbitrary point in time, or just wait until one breaks and R&R just that one. The Ford 6.2L is notorious for breaking valve springs. When they break, you will DEFINITELY know as the engine runs horribly.Had my #8 intake break on me last September.[ATTACH=full]482499[/ATTACH]If you're mechanically inclined, it's not difficult to replace so long as you have the right tools.  I used a Cylinder Leak-Down tester with the jug at TDC and attached an air compressor to assist keeping the valve closed during the replacement.[ATTACH=full]482502[/ATTACH]Throw on the spring compressor, crank away, then use a magnetic pick-up tool to remove the valve spring keepers.[ATTACH=full]482503[/ATTACH]Replacement parts are relatively inexpensive, which consists of a new OEM spring and valve cover gasket. I also replaced the valve stem seal while I was in there.[ATTACH=full]482504[/ATTACH]The biggest problem I had was removing the coil-on-plug electrical connectors; after 12 years and 150k+, the red locking tabs were brittle on mine and several of them broke off.[ATTACH=full]482505[/ATTACH]A genuine Ford repair pigtail is pricey, so replacing multiple sets can ring up your repair costs significantly. But I found the manufacturer part number of the connector and sourced just those at $1.46 from Mouser and cannibalized just their red tabs to replace all my broken ones.</blockquote>

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