Hi all, a simple question, does your truck make valve/lifter noise???

 

Nope. Neither one does...I hate valve noise. MK

 

Neither one of mine does either.

 

no noise on mine either unless low of oil. it'll peck a little then to let me know its thirsty.

 

Nope -not on either I6 I've had. 223 and 300. My 2.8L V6 in my BroncoII sounded like a sewing machine no matter what I did.

 

If I ever had a vehicle without valve noise I would take it in for a check. Something must be wrong!

 

In this forum there is a topic like "My 300 sounds like a diesel", there is a lot of people who has long time fighting with valve/lifters noise like me. Of course something is wrong but I never find it...

 

Should be a fairly easy to fix on the 240/300, being you have easy lifter access. Need to find out how many, and which valves are acting up. Then why...All of them? I'd look at oil pressure, unless the whole engine is wore out. Just one lifter sticking?
Thats a fairly easy fix usually. Try some ATF and marvel oil in the oil for a while. That should free it up eventually. Most stick when they are cold. If that doesn't do it, changing the lifters is easy on the sixes. You might just be out of adjustment on a few rockers. Need to see if you have positive stop, or adjustable rockers. Need to check the valve adjustment to make sure you are actually at zero lash, or slightly tighter, for each valve. "1/2 turn down is a good avg setting, although ford says you can use up to 1 full turn.
Want to make sure you have proper oil flow from each pushrod, going to the rockers. Sometimes the rockers can gaul out a certain way, and the way the pushrod will fit into the rocker, the oil flow will be stopped at that point. I've had this happen once.
You should be able to fix this with a little detective work.
As an example, I just got the 74 I have, recently. Like 2-3 weeks ago...It had one lifter that would stick when the engine was cold, but almost always went away once fully warmed up. The truck hasn't been driven enough before I got it. Sat all the time...Once that single lifter quit sticking, the engine purred like a new engine. So I added one small bottle of marvel oil, and then about 1/2 quart of ATF, to the oil. Been driving it about 2 weeks, and the lifter is quiet now. I prefer the mild and slow cleaning method using the ATF, compared to say a strong engine flush. I don't like using flushes. They flush too much... You'll end up with a smoker if you aren't lucky, due to the new larger clearances
in the engine, due to cleaning all the varnish, gunk, etc that helps to seal things... Strong flushes can be the kiss of death to an old motor that is on the edge of needing a rebuild. I avoid, and use the soft slow methods...Being my lifter seems to be freeing up, I'll probably change the oil pretty soon. Maybe this weekend...BTW, maybe I should say I hate "excessive" valve noise.... All valves make some noise, even perfectly adjusted, but they shouldn't noticably clack, tap, or knock. Both mine basically sound like new trucks. Actually, my 300 only has 8k miles, so it better.. But my 240 in the 74 has 108k. Even thats not too awful much for a 74, "30 years old , this year" and nothing really for a maintained ford six.. They should hit at least 200k before needing any major work if the oil is kept changed. Many do more...MK

 

I bought an 84 F150 last year with 37,000 miles on it. The original owner died in 89
This year at 46,000 miles the lifters all of a sudden started getting noisy. Changed the oil and added 1 qt. of Marvel mystery oil. Did not help!
Ordered new lifters and gasket set. Upon disassembly found approx. 8 of the 12 rockers worn where they make contact with the valves (the motor was immaculet inside indicating regular oil changes)
Replaced lifters and rocker sets (rocker, ball, nut)
Motor now sounds new!
Steve G.