Burning rubber smell
5th Wheeling
Joined: Oct 2024
Posts: 47
Likes: 29
Mine did it for the first like 2k miles, intermittently but usually only after a mile of so when starting the truck up. 7.3, nothing on the roads, dry or wet still occurs. Popped the hood and it smells like a belt. I didn't visually see any issues, no belt rubbing, wear marks, etc. So I only assume it new parts heat cycling and breaking in. I rarely smell it now with 5k on the truck, like maybe once a week for a few seconds and that's it. Following to see if there is any resolution or issue I need to be made aware of.
Mountain Pass
Joined: Dec 2024
Posts: 202
Likes: 110
Probably different smells that are being lumped together.
Regen smells like being behind an F-18 afterburner cat launch right after a fresh anti skid has been applied to the deck - to me. Odd memory but that is a very unique smell doing sea trials on a fresh deck and lasts a short time. Not quite the smell of burning rubber, but more like new tire smell after the first drive x 10.
Then we have the burning belt smell.
It wouldn't surprise me if these are all different things and one persons "smells like rubber" is a different persons "smells like fuel burning".
Regen smells like being behind an F-18 afterburner cat launch right after a fresh anti skid has been applied to the deck - to me. Odd memory but that is a very unique smell doing sea trials on a fresh deck and lasts a short time. Not quite the smell of burning rubber, but more like new tire smell after the first drive x 10.
Then we have the burning belt smell.
It wouldn't surprise me if these are all different things and one persons "smells like rubber" is a different persons "smells like fuel burning".
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Cargo Master
Joined: Mar 2008
Posts: 3,098
Likes: 136
Mine did it for the first like 2k miles, intermittently but usually only after a mile of so when starting the truck up. 7.3, nothing on the roads, dry or wet still occurs. Popped the hood and it smells like a belt. I didn't visually see any issues, no belt rubbing, wear marks, etc. So I only assume it new parts heat cycling and breaking in. I rarely smell it now with 5k on the truck, like maybe once a week for a few seconds and that's it. Following to see if there is any resolution or issue I need to be made aware of.
6th Gear
Joined: Jun 2024
Posts: 6
Likes: 1
Thought I found my source with a power steering hose leak, burning rubber smell went away for a while after it was repaired but is back again.
On a side note...my dealer is 1.5 hrs away, they sent a mobile tech out to change the power steering hose saving me 3 hrs windshield time.
On a side note...my dealer is 1.5 hrs away, they sent a mobile tech out to change the power steering hose saving me 3 hrs windshield time.
Mountain Pass
Joined: Oct 2024
Posts: 194
Likes: 134
Thought I found my source with a power steering hose leak, burning rubber smell went away for a while after it was repaired but is back again.
On a side note...my dealer is 1.5 hrs away, they sent a mobile tech out to change the power steering hose saving me 3 hrs windshield time.
On a side note...my dealer is 1.5 hrs away, they sent a mobile tech out to change the power steering hose saving me 3 hrs windshield time.
Fleet Mechanic
Joined: Feb 2017
Posts: 1,597
Likes: 83
From: N. Texas
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Cargo Master
Joined: Mar 2008
Posts: 3,098
Likes: 136
Went in for regular service and had them check these two possible leak points. Nothing. They even shared a video showing it.
So until I find other evidence it’ll remain as they say. Winter crap on the cats burning off.
So until I find other evidence it’ll remain as they say. Winter crap on the cats burning off.
Fleet Mechanic
Joined: Feb 2017
Posts: 1,597
Likes: 83
From: N. Texas
I can tell you it's not "Winter crap" as I live in Texas and we don't have winter crap on the roads.
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Cargo Master
Joined: Mar 2008
Posts: 3,098
Likes: 136
thanks!
Mountain Pass
Joined: Oct 2024
Posts: 194
Likes: 134
Crawl under and look at the downpipes, that’s likely where the burning is, trace back the mess to its source.
4wd Low
Joined: Mar 2014
Posts: 12
Likes: 6
Does the Whipple tune increase line pressure?
Last edited by BMcEL; Mar 12, 2025 at 09:42 PM. Reason: Forgot the quote...