2000 SLT Quad, getting fuel odors thru the vents especially after running on freeway and slowing down. No apparent leaks - ideas anyone!? ???

 

Pop the hood and see if the cowl seal has popped off the shelf at the rear of the engine compartment.<br>Happens all the time. Just pop it back on.

 

Does it smell like burnt fuel?<br>It could be an exhaust leak...check your manifold bolts and others in the area.<br><br>If it smells like raw fuel, then I would check your fuel system.<br><br>If it is more of an oil smell, it is probably your fumes from the blowby tube. These are more noticeable the first few hundred miles after each oil change.<br><br>If that little rubber seal comes loose, it could fall on the exhaust system and start a fire...you can take a pair of pliers and squueze it a bit, several times along it, then snap it back on...or you could use a silicon glue on it.

 

Check your rubber fuel lines for cracking, it may be leaking enough for you to smell but not see on the ground yet. If that were the case you could probably see it on the tranny or elsewhere under the truck as well.

 

Read this: <br>TSB 09-02-00 &quot;A Heavy Oil Or Fuel-Like Odor Coming From the Diesel Engine Compartment&quot;

 

Could the odor be coming from the catch bottle mounted on the front of the engine to catch blow-by?<br><br>Mine made a strong order like you describe and I took 10' of heater hose along with a connector and extended my hose back behind the cab and mounted the catch bottle there.<br><br>No more smell..

 

I had this happen to me. Looked for a month to locate it. There were no drips or wet spots. Finally crawled under truck with it running (man is is noisey), found the smallest hairline crack on the topside of the fuel line. After taking the line off could see the tiny crack. Hard to believe something so small was causing the smell but not leaving any wet evidence.