| Raw fuel smell when stopping. [message #306100] |
Mon, 29 August 2016 09:06  |
77Royale
Messages: 461
Registered: June 2014
Location: Mid Michigan
Karma:
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Just got back from an uneventful 200 mile trip camping. After a long list of things replaced. I now notice a raw fuel smell inside the coach when we were stopping for lights and stop signs. The smell goes away quick but wondering what / where it could be coming from.
The facts.
403. Non California emissions. Patterson Carb with 250 miles on it. New in carb filter, New in line filter just after the selector valve on the frame rail.
All new SAE 30R9 fuel hoses just installed a few weeks ago. Dropped both tanks and replaced everything.
New selector valve
Bounds insulated fuel hose going to the carb.
New fuel vapor separator.
When I was replacing hoses, I did blow out the metal line running across to the charcoal canister.
Canister it self is old, but was not wet or leaking and I also put in a new filter in the bottom of it.
Fuel pump has the 3rd line for a return, and a return line was run from the pump back to the filler neck with instructions from Dave Lenzi.
I can find no leaks of any kind anywhere, Running or sitting. I have fueled up 3 times and nothing is leaking when at the pump or just after fueling up. I can here a hiss at the vapor separator for a bit after getting gas. The smell only comes in when rolling to a stop. Once underway it goes away. It does not seem to make a difference if the tanks are full or half or 1/4. My thought was the rush of gas going into the front tank is spilling somewhere? but again, no leaks, drips or puddles. Once we come to a stop and turn the engine off there is no smell at all.
The only thing in the system not just replaced is the charcoal canister.
Any ideas out there on what or where to look?
77 Royale, Rear Dry Bath. 403, 3.55 Final Drive, Lenzi goodies, Patterson carb and dizzy.
Mid Michigan
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