2000 ML320 w/193k miles - Fuel Smell
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2000 ML320 w/193k miles - Fuel Smell
I searched and didn't find too much, so here goes:
I have over the last month noticed a fuel smell after filling up, which would go away, but the last two fill ups it seems to stay around throughout the whole tank, i.e. full to empty. I am one of those who "over fills" to round off to the nearest dollar.
I am thinking it is the charcoal evaporator canister thing since I do not have a check engine light or fuel on the ground.
I will be changing the fuel filter soon (never have yet!) and am thinking to change the canister, does this sound logical? Any way to be sure that is the problem? Any other thoughts on what it could be?
Thanks
I have over the last month noticed a fuel smell after filling up, which would go away, but the last two fill ups it seems to stay around throughout the whole tank, i.e. full to empty. I am one of those who "over fills" to round off to the nearest dollar.
I am thinking it is the charcoal evaporator canister thing since I do not have a check engine light or fuel on the ground.
I will be changing the fuel filter soon (never have yet!) and am thinking to change the canister, does this sound logical? Any way to be sure that is the problem? Any other thoughts on what it could be?
Thanks
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Joined: Mar 2005
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Would it be one of the following:
- Fuel system regeneration valve
or
- Purge Valve for Fuel Vapor Canister
The smell is near the rear only on the filler side (from what I can tell), I've had the CEL come on for P0442 twice and it has gone off by itself both times after a day or so.
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From: Bronx, N.Y.
2002 ML 320 & 2006 ML500
Code P0442, as you know now, is for a detection of a leak in the Evaporative System.
The first thing to do is remove the gas cap and inspect the interior rubber O-ring for cracks and dryness.
If that is not the issue, then there is probably a leak at the Fuel Tank Pressure Sensor (pictured below). The most cost effective way to find out if it is the valve is to have a Smoke Test done at your local mechanic.
The first thing to do is remove the gas cap and inspect the interior rubber O-ring for cracks and dryness.
If that is not the issue, then there is probably a leak at the Fuel Tank Pressure Sensor (pictured below). The most cost effective way to find out if it is the valve is to have a Smoke Test done at your local mechanic.
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Thread Starter
Member
Joined: Mar 2005
Posts: 91
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Code P0442, as you know now, is for a detection of a leak in the Evaporative System.
The first thing to do is remove the gas cap and inspect the interior rubber O-ring for cracks and dryness.
If that is not the issue, then there is probably a leak at the Fuel Tank Pressure Sensor (pictured below). The most cost effective way to find out if it is the valve is to have a Smoke Test done at your local mechanic.
The first thing to do is remove the gas cap and inspect the interior rubber O-ring for cracks and dryness.
If that is not the issue, then there is probably a leak at the Fuel Tank Pressure Sensor (pictured below). The most cost effective way to find out if it is the valve is to have a Smoke Test done at your local mechanic.
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MBWorld Fanatic!
Joined: Oct 2011
Posts: 7,107
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From: Bronx, N.Y.
2002 ML 320 & 2006 ML500
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I finally got around to changing the fuel filter and found fuel on top of the pump assembly. I am assuming that the retaining ring is not tightened properly, so I removed and tightened accordingly.
Last edited by paulzale; May 10, 2013 at 03:01 PM.
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From: Raleigh
1999 ML430
I just had to access the top of the fuel tank on my 99 ml430, not too bad just time consuming to remove all the bolts holding the rear seat, anyway, the top of my canister aslo had about an inch of gas in the top. I dried it off and cranked the engine, there was fuel imediately leaking from the "front line", I took the line loose, cleaned just a little and re-attached it but routing it under the wiring harness, this time, no leak. I had been driving around smelling gas for a few months, it was actually a little scary once i realized that there was almost a cup of gas just sitting under the rear seat. But that was all it was, no more smell, so I assme no more leak. ood luck.
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e300
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