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Probable gas tank leak questions

Fri, 09 Aug 2019 18:43:04 GMT

For the past 3 months, ever since taking my 1967 250SE Cabriolet out of winter storage, I can often smell gasoline when I'm driving, and upon opening the trunk. I'm suspecting a rusted hole in the tank. My driving milage has gone done dramatically (avg normal 15.6mpg, most recent fill after a month driving in town on short drives, it was 11.3mpg. Questions: 1. How can I confirm my diagnosis? 2. If that is the problem, what sort of mortgaging will I be facing to fix this issue?I'm assuming that the tank removal is from below, so a major amount of labor is involved, well beyond my skill base, and a new tank will likely be costly, but far less than the labor involved.

Tue, 13 Aug 2019 00:23:38 GMT

Have you found a puddle of gas under the car when it sits for awhile? Could be loose fittings for the hoses so they leak and smell like gas. I know my diesels like to do that so I just replace the hose clamps especially if they are the non screw down type.

Tue, 13 Aug 2019 04:20:25 GMT

Depending on the condition of your tank, fuel tanks can be repaired by thoroughly cleaning the inside and having the inside of the tank professionally sealed. As stated before, you may just have a loose hose clamp.

Thu, 15 Aug 2019 19:02:17 GMT

have you checked all of the fuel lines for weeping? i had a similar issue with my 66 230 sl. turned out the main fuel line leaving the tank was weeping where the hose clamp secured the line to the tank.

Fri, 16 Aug 2019 10:49:52 GMT

I'm not sure if the coupe and cabriolet have the same plastic vent tank in the trunk that the 113 has, but the hoses to the tank and the tank itself can weep. On the 113 the tank is in the right rear corner of the trunk.

Tom Hanson
Fri, 20 Sep 2019 21:41:02 GMT

check the hoses and the vapor tank