Hello and welcome to the forum Erry! Do you know exactly what needs to get done to the car? We have very helpful step-by-step guides for various repairs for the W124 if you're able to do the work yourself (link below). Please let us know if you have any questions or if we can assist with any part needs.

Mercedes-Benz E-Class W124 (1987-1995) Technical Articles - 300TE 24, 300CE 24, 300E 24, 300CE, 280E, 300E2.8, E280, 320TE, E320 - Pelican Parts

Thanks for the fast response Dmitry, well as far as I know, there's a leak of fuel from the right side under the passenger's seat on the back, the fan doesn't work for AC & heater, the compression of the engine I'd say no power at all, I have to step deep on the gas in order to make the car moves, it's a bit complicated for me to work it by myself because I have no tools, no place to get the works done, but I'll try whatever it takes to fix the easiest thing to do first.

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