Got a 3406 that i am starting to notice a different smell. Hard to describe...kinda like a chemical smell of sorts. Any ideas?
Coolant Truck Shop
Over charged battery's
Did you change oil recently? Different brand of oil? We run Rotella T, every time I change, I can smell it for the first week or so.
Description would be nice to stop the guessing!!
Depending on the truck greasing the u joint on the tranny can sling excess grease on the exhaust, smells funny for a while when you pull a hill and get it hot. Hard to say what it really is!
No recent oil change. I'm going to cut off battery switch and see if it is over charging. If timing changed, would that cause it? Its a harsh, causic smell.
Like i said in the original post....kind of hard to describe. If it were s familiar smell i would know what the problem was.
Where do you smell it? cab, exhaust, around then engine after it's shut off? kind of a nastier more smokey smoke from the exhaust?
Seems as though i only smell it when stopped. When walking around the truck. I just stared to notice it. I need more time to nail it down.
AC clutch cooking off? You said caustic odor, could it be more like a electrical odor?
Yeah, could be. Never thought of that.
Epoxy? Baked varnish? Burnt clutch should be recognizable.
Maybe the local choke&puke changed their chili recipe. Bob
Second option, what type of fan clutch on it? Air or viscous?
Viscous
Look for leaks, the fluid in those smells real weird when they leak, don't want to shoot a fan off.
Hub oil? Front wheel seal?
The Nose Knows. Keep up on it. I'very caught some problems that way, but usually after it's too late. Good luck.
Are you sure nobody left something like a nitrile or latex glove on an exhaust component somewhere? Seen that one before.
I had not considered that! Been there done that!!
What was the outcome?? Ever find it?
I have not used the truck yet to see, probably next week or so
Well, smell had gone away. I don't know if it is related, but truck was burning about a gallon of oil every 10 hours. I change oil, added some Lucas. One of the valve covers was a little loose and seeping oil, tightened it. Doesn't seem to be using oil now, but only 10 hours on it since oil change.