I have a 1993 Mercedes 190e that I bought used some time ago. About 170k miles now. Only thing I have done is replaced the water pump myself with the help of the experts here.
Want to know what to check first. I have moderate skills. I turn the key and I only get a hissing sound, maybe from the front driver side underneath the vehicle. The battery is full power, there is no clicking sound, just a hiss. Tow truck driver said it's probably the starter. How can I test to find out? Of course I have to do it myself because I don't have much money.