5.4 liter 2 valve climbing a steep grade while towing

[@tractorman1990]

I bet you’ve done little to no work on that engine

[@vegasfordguy]

@@tractorman1990 Just regular 5,000 mile synthetic oil changes, spark plugs and an intake manifold. Everything else on the engine is still 100% factory. I service the transmission and diff fluid regularly. It's been the most solid reliable vehicle I've ever had.

[@tractorman1990]

@ awesome!

[@scaramouche8244]

@@vegasfordguy Didn't that motor have issues with spark plugs blowing out?

[@vegasfordguy]

@@scaramouche8244 That's what they say. I'd had two 5.4 liter 2 valve trucks and never had an issue. I read that if the plugs are torqued correctly and then tightened another 1/4 turn that they won't come loose and blow out, but who knows. This was due to the holes only having 4 threads, the later cylinder heads had 9 threads.

[@scaramouche8244]

@@vegasfordguy What year was later?