When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
My gas is leaking , I just got as under the car as I could I ripped that wheel well **** off and I see top of gas tank all wet and dripping, what the hell could that be it started out of nowhere little while ago
Sorry to hear about it , it could be a fuel like ( I don't know whether or not there's a TSB for it ) or fuel pump . I say fuel pump because I had a coolant leak coming from water pump and when a pump goes bad , we can observe leaks . High pressure / Low pressure pump could be another thing but I don't know those could major leaks , only a strong smell of gas related to them . (Those replaced in my car too ) . Whatever you do , please don't drive your car . This is a friendly advice .
Another thing , just came thru my mind : a loose fuel filter ( a low possibility but worth the checking )
It’s not stalling or have hard time driving, I read that car is notorious for plastic housing cracks, I got as under the car as I could and it’s on drivers side, tomorrow after work I’m going to rip the back seat out and see what’s going on but by then all the gas will be gone but if it’s cracked or a seal is cracked I should see it, hopefully it’s an easy fix , I’ll probably do it myself
The PZEV warranty on emissions and fuel related parts is for 15yrs/150,000 miles.
So a 2010 is no longer within warranty period.
* I should have said the 15yrs/150,000 mile warranty is the max for specific states. The info below should be in your warranty booklet that came with your operators manual in the glove box.
On top of filter dry, no gas sitting on top, no visible cracks, hoses tight, I’m stumped… it’s literally leaking right under back driver seat, I don’t get it, I thought for sure it was going to be the filter housing or seal but they both fine, I went to Jack car up so I can get a better look and it starting absolutely pouring out of nowhere, have to wait till tomorrow but what the hell? Fuel pump wouldn’t be leaking on drivers side, maybe it’s a cracked hose I don’t know
When you say its leaking under the drivers seat do you see gas on the fuel line itself, or is the gas leaking down from on top of the plastic covers underneath the car?
In your first post you say you removed the wheel well liner and saw gas on top of the tank. I've had the wheel well liners in my w204 off a few times and dont think I can see the top of the tank.
From the gas tank to the engine its just the one fuel line. The fuel line should be under the car inboard of the brake lines that run along the drivers side.
the leak could be coming from near the engine and gas is traveling down the fuel line then dripping on top of the plastic cover. have you inspected in the engine bay, follow the fuel line from the fuel rail above the intake manifold and follow it back. If nothing go under the car and remove the plastic cover for a better look.
Photo below shows the fuel line where it comes down from the tank. The line next to it is the breather pipe (evap hose) from the tank to the purge valve.
Photo below shows the diesel fuel line. Same location as the gasoline fuel line. Can better see where its located under the car, can see the brake lines (green arrow) off to the right.
The back under the car I don’t have a plastic cover, the liner was soaking wet so I cut it off so I could see what’s going on and i seen it coming from the top of the tank, drivers side right under passenger seat that why for sure I thought it was filter, hat smells of gas inside the car, as soon as I got the cover off and saw no gas on top or around the filter I knew that wasn’t it, then I went to get under the car and it started pouring so tomorrow I’ll have a better idea hopefully
2005 E320 4-Matic Wagon and 2016 E350 4-Matic Wagon
If you thoroughly check the visible parts of fuel line from rear to front of vehicle and still can't locate the leak, it's plausible that's it's the plastic line #10 in parts diagram above that has failed. You can continue the search for the fuel line link or proactively change out line #10 and at least you have a new plastic line in the end even if it turns out not to be the leak source.
Based on this link https://mbworld.org/forums/e-class-w...fuel-line.html, it seems like the contours of this line may make it impossible to replace unless you lower the fuel tank enough to gain enough clearance to snake new line in without damaging it. Would be prudent to empty the fuel tank before lowering and supporting with a jack of some sort. Maybe someone who has actually done the job on your vehicle can and will chime in.
Problem today is I got off work and can’t get under the car, bad thunderstorms it’s pouring out, I have 0 gas it all leaked out, not sure how I’m going to find this leak with no gas…. When I do finally get under the car I’ll have a better idea… I was really hoping it was something simple like fuel filter…. If it a bad hose is that something I can do myself or better to bring it somewhere?
I dont see why you cant replace the fuel line yourself if it is the fuel line. The section that runs under the car is simple enough. If its the rear section that goes up to the fuel pump just tie the new line to the old line and pull it up from underneath.
Do you have a gas container you use for the lawn mower, just put 1/2 gallon in the tank and turn the key to on so the fuel pump kicks on and primes the line. Turn the key back off and look for the leak.
And you already removed the rear seat and inspected the top of the tank and fuel line connection and it was dry?
Regular fuel tank. My car.
Left side is fuel filter ( also called pump, jet pump...actually venturi effect pump and not a true pump ). The blue fuel hose to engine is here
.
Right side is fuel pump. Mine is a 3 phase fuel pump.
.
==============
One CAN NOT simply replace the blue plastic fuel hose without at least dropping the tank a bit, say 3-4 inch.
The ODD shape blue hose will not come out or new one wont go in, unless the tank dropped a bit to create bigger gap.
This also mean the subframe has to be removed fist.
Probably have to remove the plastic under tray to inspect the fuel supply line. The black plastic nuts should be 10mm, the metal silver ones up near the engine are 8mm.
I can’t get under the car, my damn Jack stands are at my parents house and I don’t trust my jack, if I get fuel pressure test will air come out where it leaking from? I’m just curious about that
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
