Starting up problem

BAJRO BRIGIC

MEMBER
1991 MERCEDES BENZ W124
5 CYL
2WD
MANUAL
400,000 MILES

My car wont start up without gas, if I do not give it gas it just cranks. After giving it gas it starts up and brings a cloud of black smoke out of it, after that everything is normal.

Thursday, January 3rd, 2019 AT 2:46 AM

1 Reply

JACOBANDNICKOLAS

MECHANIC
108,254 POSTS

Hi and thanks for using 2CarPros.

If you are getting a puff of black smoke, that indicates it's getting too much fuel. What I recommend is checking fuel pump pressure to make sure the regulator is working. Here is a link that shows how in general pressure is tested:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Check that and let me know what you find.

Joe