the dreaded ford tick/knock that haunts me for ever

Asked by Jun 30, 2017 at 07:13 PM about the 2003 Ford F-150 XLT Crew Cab SB

Question type: Maintenance & Repair

the question youve heard a million times, what is making that noise. Ok
sounds like lifters,rod bearings,ect ect. I replaced lifters, rod bearings, timing
chains,guides,tensioners,oil pump. still have noise and not soft ticking you
can hear me coming down the street. Using hose to listen for sound it seems
to be coming from under intake along side of head now but there is nothing
there like push rods or lifters used to be there. What have I missed or forgot
to check PLEASE give me your thoughts on what to check  thanks

3 Answers

845

I don't know the exact noise you have but, it's possible you have broken valve springs, sometimes they break in half and spin creating a similar noise as the engine is running. Also broken valve followers can cause this noise as the Rollers sometimes ware out where it spins and contacts the cam, or where it contacts the top of the valve or lifter, also check that you have good oil pressaure or try a thicker oil or oil stabilizer

91,545

Maybe the cam phasers are getting noisy. https://www.youtube.com/watch?v=-YFOxIZEWZM

thank you both for your input, the 03 4.6l doesnt have cam phasers thank god ,one less thing to check. as for the valves ya thats what I was thinking because there is nothing else along side of the head under the intake ,but the valves? with the hose stuffed down there its really easy to hear it knocking, just removed valve cover again to check and everything looks and feels fine,cam an lifters. cant tell about the springs,rockers all good??? its a good solid sound not just a faint ticking. Do you think the valves would make that much noise?? Thanks for taking the time to give your thoughts...ozzie

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