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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 03-06-2011
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spark plug problem

i recently bought an 01 ranger and want to change all the filters and fluids and put all the good stuff in her of course. my question is how do i get to the spark plugs on the passenger side??? fn ac box is totally in the way... is there a trick or do u just have to give it hell.....
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Old 03-06-2011
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go in through the wheel well. remove plastic liner
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Old 03-06-2011
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I would probably agree with j99. I just replaced my plugs with some nice Iridiums and didn't go thru the wheel well. It wasn't as user friendly and it tore my arms up a little. I don't know why I didn't go thru the well...I had the wheel off replacing a broken sway bar linkage anyway. Guess I like doing things the hard way.
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Old 03-06-2011
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ok, so ur saying pull the wheel and go in from the bottom. thats what i was thinking i might have to do. i had almost an hour of time yesterday and was gonna do it. but once i looked at it i was like this is gonna be awhile. thanks man
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Old 03-06-2011
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Heck no do it the hard way like I did! Just kidding. j99 had the good idea....wish I would have thought of it. Enjoy your new ride and post some pics!
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Old 03-06-2011
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alright man will do. its a work in progress for sure.. its four colors right now, but the frame engine and trans only had 70,000 miles on it so i had to jump on it. im used to older rides i have an 87 mustang and had a 92 f150 for like 12 years. i needed better gas mileage and ext cab for the new job.......
i'll get some pics up soon of the frankensteinranger.
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Old 03-06-2011
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Nice! I bought my 99 knowing it had issues but anxious to have a Ranger again. I'm going to have a great time throwing money at it and seeing what happens. My wife isn't too keen on the money thing but it will be a long work in progress,
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Old 03-06-2011
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Waaaay easy when you pull the inner fender plastic. Here's what ends up right in front of you.

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Old 03-06-2011
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How many miles on ur '99 4.0? I have a '97 w/123K mls and it has piston slap. Do you or anyone know what years the pistons on the 4.0 were redesigned to cure this problem?
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Old 03-07-2011
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Quote:
Originally Posted by Backinthefold View Post
I just replaced my plugs with some nice Iridiums.
I just did the same with NGK Iridiums, and what a skip in the motor they created .
Ides smooth,Rev above 2.700rpms & it misfires like crazy. Almost like you hit the REV Limiter. Bought plugs from RockAuto.com

Going to Ford to buy Motorcrafts, Just learned a big lesson, use oem only in this truck.
BTW: 2007 XLT extacab 4.0 ohc, Auto 4X4.
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Old 03-07-2011
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Originally Posted by DaveyMac View Post
I just did the same with NGK Iridiums, and what a skip in the motor they created .
Ides smooth,Rev above 2.700rpms & it misfires like crazy. Almost like you hit the REV Limiter. Bought plugs from RockAuto.com

Going to Ford to buy Motorcrafts, Just learned a big lesson, use oem only in this truck.
BTW: 2007 XLT extacab 4.0 ohc, Auto 4X4.
they were put in there for a reason
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Old 03-09-2011
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motorcraft is all i use.... even in a chevy if its available
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