V10 Gas engine Ping or ?
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5th Gear
Joined: Sep 2024
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V10 Gas engine Ping or ?
On last 800 mile trip I noticed what sounded like engine pinging when climbing modest hills. My question is, “Was it engine pinging or could it be something else? I did not notice any power loss and there were no other issues. It’s a 2017 E450 Super Duty with 24k miles. Has recently had oil and filter changed and using 87 octane gas.
Cargo Master
Joined: Sep 2012
Posts: 2,112
Likes: 286
From: Eastern TN
Do you have access to a scanner with live data so you can monitor knock counts? If it were pining to the point you can hear it, it could retard timing and possibly set a fault code. If the sound isn't pinging, there could be a component hitting resonance at higher rpms - loose heat shield, loose bracket, etc. But odd that it only hits resonance under load.
Sixto
07 E350 5.4 200k miles
Sixto
07 E350 5.4 200k miles
Hotshot
Joined: Jul 2020
Posts: 10,565
Likes: 2,674
From: Near Salt Lake City
Lean misfire can also cause a spark knock condition
Stop, turn the vehicle off and let the processor reset the timing back to base a few times during the drive
You should be able to notice the knock getting better and worse while doing that
I'd also check the fuel trims and watch the front O2 sensors switch
If you have one (or both) O2 sensor(s) stuck lean and a failed injector, spark knock will be the result
When my 4.2 did that, using 91 octane had no effect
Stop, turn the vehicle off and let the processor reset the timing back to base a few times during the drive
You should be able to notice the knock getting better and worse while doing that
I'd also check the fuel trims and watch the front O2 sensors switch
If you have one (or both) O2 sensor(s) stuck lean and a failed injector, spark knock will be the result
When my 4.2 did that, using 91 octane had no effect
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