fatboy82289

i got a 97 f150 with the v6 it runs good has new motor put in like 2 years ago. but every morning when i start it it sounds like it has a lifter knock and it does it for like 5 min them it goes way any one have any ideas?

alex_fout

not sure. some motors just do that. maybe the oil youre using is too thin or something

fatboy82289

i used 10w 30 in it and a quart of lucus and it still does it. i aint trying to blow this motor i already blew one and then i put a new long block in it. just trying to get it stop ticking but thanks.

Good old Bill

Disagree with the weight of the oil, have been told by Ford to use the 5W20. The top end goes out if a thicker oil is used. Do the research, and you will see most guys use the recommended oil and have tons of miles on there engines. My 02 4.2 has 192K. Don't believe this crap about the heat thinning down the oil, I'm in the desert and 115 degrees is not an issue. I go 5000 miles on oil changes and just down to the add 1 qt mark.

proudfordowner

just out of curiosity, but it seems to me that it would take a few minutes for oil pressure to build enough to reach the heads, hence why after a short period the knock goes away..
just my 2 cents
Stephen

Good old Bill

^ member, exactly, the closer tolerances of the engine requires the thinner oil. These engines are not built to the same specs as years back, are we not getting more mile on these trucks? Its nothing to get 200K nowadays, 50 years ago or less, 100K and its throw away.

alex_fout

i got a buddy that has a 97 mustang cobra and it does that despite having new lifters put in, the new lifters got less than a couple thousand miles on them. but after a minute it quits doing it. maybe they just need adjusted. its really hard to say what could make them do that. its probly like proudfordowner said and it just takes the motor a minute to build up pressure when its cold

alex_fout

haha im pretty good at giving vague answers

yelobird2002

Are you using the oil filter with the S at the end of the part #? S stands for silicone check valve. The valve holds the oil from draining back to the pan every night to eliminate oil starvation to the lifters.

proudfordowner

that is good news to here. What brand filters do you know have the silicone check valve?
stephen