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| Posted: Wed May 13th, 2020 02:18 pm |
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Mike69 Mustang Nut  Joined: Sun Oct 22nd, 2017
Location: Horsepasture, USA
Posts: 1692
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Jim when I had the same problem you are having it immediately sounded to me like a cracked head. I did a compression test, & it passed but yet the heads were cracked. I still think that is your problem. Just for the heck of it pull #-3 spark plug & look at it, because both of the heads on my 4.0 were cracked. Hairline crack between the valve seats.
____________________ 21 Bronco Sport Big Bend (Wife's DD) 05 F150 XLT Reg Cab, 2WD, 5.4L, Auto (My DD) 69 Mustang Coupe 5.0, 5 spd 9" rear(Project) 14 Kawasaki Vulcan (Wife's Toy) |
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