Name this sounds, engine knock?
Thread Starter
|
Laughing Gas
Joined: Sep 2005
Posts: 984
Likes: 8
Name this sounds, engine knock?
Wondering if anyone has experienced this intermittent noise? 2016 F250, just under 70k. I only hear it during cold starts and at idle. It has been running a few minutes already in the video and seems to go away during throttle and after the engine is hot. Fluids are at level and clean and I can't yet determine exactly where it's coming from, it's just as loud everywhere. If it's something simple I'd rather fix it myself than let the dealership fool with it on the powertrain warranty. It takes an act of God for them to look at anything let alone it sits there for a month at a time for repairs. I'll start looking deeper when I get time this week but still curious if anyone had similar issue
Fleet Mechanic
Joined: Jan 2012
Posts: 1,668
Likes: 13
From: Saskatchewan
Chances are it’s a fuel knock. Mine went away as soon as I put fuel conditioner in it but now about 10 000kms later I have a bad injector. In my opinion it’s the early signs of a injector going bad.
Tuned
Joined: Apr 2004
Posts: 391
Likes: 18
From: Calhan, CO
External
The sound is coming from outside the engine. Sounds like something plastic, like a sympathetic vibration or movement of some piece indirectly attached to the engine.
Try feeling around under there, carefully, and try to match what you feel with the noise. I would say that the lack of sharpness of the noise indicates it is being generated by something of low
density like a plastic or very thin metal.
Try feeling around under there, carefully, and try to match what you feel with the noise. I would say that the lack of sharpness of the noise indicates it is being generated by something of low
density like a plastic or very thin metal.
Senior User
Joined: Jul 2011
Posts: 150
Likes: 0
From: nola
Trending Topics
Thread Starter
|
Laughing Gas
Joined: Sep 2005
Posts: 984
Likes: 8
Not the post oil change noises, it was changed a 1000 miles ago. After looking at it for a bit, really sounded like a/c compressor or something in the pan but still not certain. I traded it and went back to new gas F250. That truck has been the most unreliable vehicle I have ever owned and I wasn't about to put more downtime and money in it.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 6 Best Deals Available on New Fords & Lincolns Right Now
Brett Foote
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Verdad Gallardo
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
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
More Turbo
Joined: Dec 2018
Posts: 535
Likes: 23
From: Arkansas
Not the post oil change noises, it was changed a 1000 miles ago. After looking at it for a bit, really sounded like a/c compressor or something in the pan but still not certain. I traded it and went back to new gas F250. That truck has been the most unreliable vehicle I have ever owned and I wasn't about to put more downtime and money in it.
Fleet Mechanic
Joined: Feb 2007
Posts: 1,652
Likes: 79
From: Mooresville, NC
OP -- time to instrument it with a diag tool (e.g. Chassis Ear) or get a long rubber hose / tubing up to your ear (cotton ball, ear protection plug in the other ear) and isolate / "geo-locate" the sound by placing the hose at different locations in the engine compartment.................I've used both methods with success --- former takes a little more time to set up, later can be done in minutes............
More Turbo
Joined: Dec 2018
Posts: 535
Likes: 23
From: Arkansas
OP -- time to instrument it with a diag tool (e.g. Chassis Ear) or get a long rubber hose / tubing up to your ear (cotton ball, ear protection plug in the other ear) and isolate / "geo-locate" the sound by placing the hose at different locations in the engine compartment.................I've used both methods with success --- former takes a little more time to set up, later can be done in minutes............
Thread
Thread Starter
Forum
Replies
Last Post
RedDevil460
1999 - 2003 7.3L Power Stroke Diesel
53
Mar 29, 2014 08:16 PM
jsib123
1999 - 2003 7.3L Power Stroke Diesel
9
Feb 1, 2012 06:55 PM
Powerstroke_wannabe
6.0L Power Stroke Diesel
4
Sep 16, 2009 06:16 PM