I have a 1986 mercedes 190e 2.3 one day it just stop running I changed the fuel filter and the fuel pump relay I do not know what else to do if any one has any advice I would be much appreciative I don't know anything about mercedes. Thanks ben

Remove the intake shrouding enough to introduce a jigger full of gas and see if it will try to start. If it will cough and sputter a little, then you know you have spark. Do NOT get the idea to squirt gas in while someone is trying to start it. Many people have been burned unrecognizable by doing that. Simply throw in a little gas, set the container away from it and quickly see if it will try to run.

A good place to start. If it tries to run, then you have spark and compression. If it does not, then you most likely have a fuel supply issue.

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2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

Annoy a Liberal, Read the Constitution

You don't need to know much about Mercedes to determine if its fuel or electric issue.

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'86 300E 5 speed
'71 Triumph TR6
'46 Cushman Scooter
'41 Ford 9N tractor

Not really enough information. Do you have a friend that is pretty good at fixing cars? If so it may help for him to have a quick look with you.