Re: Cam tensioner
I don't think the chain would jump time. I'm new to these engines,but a fair bit of experience in Harley V Twins. I wish HD chain tensioners were as easy to replace as these Ford 4l engines. Heh.
From what I researched on this the tensioners are hydraulic with a spring and when they wear out,like mine and yours are,the oil bleeds off and the spring gets weaker.
I've installed HD hydraulic lifters in HD's without priming and they'll tick for about 30 seconds before they pump up,then they're fine.
I'm pretty sure the spring will hold tension until they pump up,so really no danger of jumping timing. I'm sure if you wanted to roll the engine until you're at TDC on compression stroke on #1 cylinder certainly won't hurt,but I don't think it's necessary.
I think the only chance to jump timing would be if you fired it up without the tensioners in at all,but that's only my opinion, because, I'm still brand new on any knowledge abut these engines.
Keep me posted on how you make out and I'll do the same when mine arrive in the mail,they're a couple of weeks late already.
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2009 Ranger Sport 4L V6 RWD
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