Piston Slap? Help!
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 336
Likes: 0
Piston Slap? Help!
I just had a replacement engine (5.4) put in my '02 Screw and I have this tapping/knocking noise under light to moderate load. Sounds like a lifter but more internal. Is this piston slap?
I've tried to research this 'til my face is blue and it seems to be the concensus that this is a relatively common issue that has minimal damage other than to your sanity.
How can I quiet this? I tried going to 10w-30 from 5w-20 and it was slighty quieter but still present. Will synthetic oil help or maybe even a different weight? I'm open to anything suggestions.
I've tried to research this 'til my face is blue and it seems to be the concensus that this is a relatively common issue that has minimal damage other than to your sanity.
How can I quiet this? I tried going to 10w-30 from 5w-20 and it was slighty quieter but still present. Will synthetic oil help or maybe even a different weight? I'm open to anything suggestions.
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 336
Likes: 0
I know a ping vs. a metal to metal tap/knock and its not a ping. It happens mostly when cold but still occurs when hot. It's doesn't completely go away but does get a little quieter but I want it to be almost silent.
Posting Guru
Joined: Mar 2009
Posts: 1,845
Likes: 1
From: Montague, NJ
its obviously not piston slap or it would happen ALL the time. lets go down the list..
crank bearing
wrist pin
etc etc etc
and by the way, my trucks ping sounded like a thrown rod under load. i was looking for new motors when one day i threw some octane booster in the tank and it went away.
try some booster. what do you got to loose?
crank bearing
wrist pin
etc etc etc
and by the way, my trucks ping sounded like a thrown rod under load. i was looking for new motors when one day i threw some octane booster in the tank and it went away.
try some booster. what do you got to loose?
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 336
Likes: 0
its obviously not piston slap or it would happen ALL the time. lets go down the list..
crank bearing
wrist pin
etc etc etc
and by the way, my trucks ping sounded like a thrown rod under load. i was looking for new motors when one day i threw some octane booster in the tank and it went away.
try some booster. what do you got to loose?
crank bearing
wrist pin
etc etc etc
and by the way, my trucks ping sounded like a thrown rod under load. i was looking for new motors when one day i threw some octane booster in the tank and it went away.
try some booster. what do you got to loose?
Trending Topics
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 336
Likes: 0
If my truck's a talker, it's saying, "I sound like a piece of S**t". LOL
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 336
Likes: 0
Mine quiets but wont go away. Will synthetics help it?
Tuned
Joined: Jan 2008
Posts: 289
Likes: 0
From: Beaumont, CA
OR... something thats kinda easy to get to if your good with a wrench or two, is the timing chain tensioner(s). if your brave enough, find a camshaft timing mark diagram, and tackle that thing. WARNING: the 5.4 is an interference motor!
Thread Starter
|
Senior User
Joined: Apr 2004
Posts: 336
Likes: 0
What do you mean by interference motor? I don't think I have the time or patience to deal with taking off the timing cover.
More Turbo
Joined: Sep 2003
Posts: 630
Likes: 4
From: Northeast
"Non-interference engines" (like the 4.9/300 cu. in. "Big Six", in the the '87 - '96 trucks) do not do this. The pistons will not hit the valves, even when out of time.