MikeJinCO wrote:
Our local motor rebuilder has had several modular block Fords in and thinks one of the major problems on the 3 valve motor is that the variable cam timing mechanisms can get all gummed up from either not changing oil or going to dealers for the super cheap oil changes with unknown oil quality. These new motors are very complex compared to the old small block Chevy or Ford.
Agree, staying with the factory spec oil is critical on any engine with variable cam phasers, else a valve failure can await...Fords 4.6 3 valve V8 is also is a candidate for spark plug failure... One would think that as many engines over the years that Ford has build they’d know how to rectify and this issue....My 07 Shelby ‘garage queen’ has only 10.8 k miles on the clock and the thought of a plug thread failure scares me...
