raw gas or bad fumes all of a sudden

[vegaschevy]

My truck seems to have major exhaust fumes or a rich exhaust smell all of a sudden. Seems to eithe rbe really rich or getting exhaust closer to the cab.

what is everyones opinions on this?

[68gmsee]

I have some questions.

Where are you when you smell the fumes, inside the truck while driving or standing outside the cab?

Is it exhaust or gas smell? Need to know the difference because a gas smell with exhaust could be running rich. If it's mainly gas fumes it could be your gas tank leaking or external fuel leak. Check for smoke in the exhaust.

Do you have a/c or driving with windows closed? Could be sucking in fumes from under the doors, firewall, etc. Lots of leaks on these trucks.

[vegaschevy]

Originally Posted by 68gmsee

I have some questions.

Where are you when you smell the fumes, inside the truck while driving or standing outside the cab?

Is it exhaust or gas smell? Need to know the difference because a gas smell with exhaust could be running rich. If it's mainly gas fumes it could be your gas tank leaking or external fuel leak. Check for smoke in the exhaust.

Do you have a/c or driving with windows closed? Could be sucking in fumes from under the doors, firewall, etc. Lots of leaks on these trucks.

it was when i was idling and got out of the truck. however it had not happened before. Seemed to really smell like rich raw gas in exhaust

[cdowns]

pull plugs to check for richness//crawl under truck to check exhaust connections and condition of fuel lines especially to rubber flex line under the cab//check the bottom of the gastank for leaking gas

[LockDoc]

-
If it is shortly after you start the truck I would say the choke is sticking. Take the air cleaner off and spray inside and outside the carb with choke cleaner. Be sure and read the instructions.

LockDoc

[Longhorn Man]

is your tank full and spilling out the filler?
if the engine running like crap?
is it harder to start?
stalls?