Probably had a critter who got under the hood lookin for a munchin on them wires then hes bbq now
...‚.. that'll do it!
No, can't say I've noticed that before OP but I guess as long as it subsides in short order it's a non issue, no?
If you have an obd2, check your Cat temps once fully warmed. If anything is blocking/being burned off the Cat's I'd think you'd get elevated temps. I think Cat's run around 1500f??
No, early morning I can smell nothing except coffee.
I suspect it has as much to do with which way the wind is blowing on the mornings you observe it. The concentration (x fuel rate = amount) of the cleaner present in that moment you start the vehicle is very low.
Tomorrow morning I'll give my exhaust a sniff as I'm running Techron at full dosage.
I dying to "smell carbon".
It would sound like i am making this up but I am not. When you smell it, you will know what I am saying.
When I had my Lexus GS430 with low miles, I use the Chevron Techron fuel system cleaner, every morning I start it up, I can smell the burnt carbon smell. It only last under a minute.
And If I dont use a PEA fuel system cleaner, it would smell normal, like any other vehicle that starts up early morning. Some unburned fuel smell then as engine warms up, no more smell.
I don't think I've ever noticed the carbon smell when using Techron or other FSC's, honestly I don't know what carbon would smell like. However I do notice more of a gassy smell on cold starts when using Techron or other FSC's.
i wish my car would put out the smell of money and then follow it with a few 100 dollar bills.....lol
seriously though, i think i have also noticed a slight different exhaust smell once before when i run fuel system cleaner.