Diesel smell in AC????

[Paul Holbrook]

Just got my truck, put 500 miles on it in two days. For the last 50 or so miles I've noticed the smell of diesel, in the cab, when the A/Cs running. Any ideas???

 

[DBuchheit]

I'd guess that its just the fresh crankcase oil. It should go away soon. Mine smells like that every time that I change the oil.



Another possibility is that you have a fuel leak. If that's the case you should be able to see some evidence such as a drip or puddle under the truck.

 

[Thomas]

Check the cowl seal. They can come loose and let fumes from engine compartment pass between cowl and hood. From there it's a short path to your fresh air intake.

 

[Big White Beast]

Had the same problem.....

Fresh oil always does it.



Took it to the dealer 4 times and they said they have tried everything to get the cowl seal to stay on. Idiots!



I just filled the seal with silicone caulk and stuck it on. Hasn't moved since. That helped keep the aroma down, but after an oil change it still smells strong for a few hundred miles.



Garrett

 

[work2muchplay2little]

These new trucks have everything! They didn't have that option when I bought mine !!

 

[Scooby]

If you get a closed crankcase system (like the Walker airsep), you'll never smell that again! Plus the other benefits... .

 

[Turbo Thom]

Damn Kurt:

Your to much!!!!!!!!!!1 I didn't have that either.



... Preston

 

[redneckdr]

smelly truck

i couldn't afford that option, so mine gives me the aroma frequently. fortunately, i read about it on tdr, before i took it back to the dealer and made a fool of myself. i thought i had an exhaust leak, but couldn't figure out why it got better after i drove it more miles. then i changed the oil and it started over again. once again $35 for tdr was money well spent... ... ..... 'course that doesn't take into account the BOMBing i've learned about. somehow i suspect the eventual talley will be around -3,965 dollars give or take a few thousand dollars... ... ... . lessee, upgraded tc, valve body, fueling box, injectors, boost module, gauges , exhaust... ... ..... does it ever end??

 

[Shooter]

Move your crankcase vent, behind the cab works well. lots of other places. Do a search.

 

[redneckdr]

smell

shooter,

i plan to address the breather soon. on my harley, i simply ran the vent back under the frame and terminated in a filter that i believe k 'n n made. prob do the same for the hd ram.