Starting up problem

1991 MERCEDES BENZ W124
400,000 MILES • 5 CYL • 2WD • MANUAL
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BAJRO BRIGIC
  • MEMBER
  • 1 POST
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.
Jan 2, 2019 at 6:46 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,236 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
Jan 3, 2019 at 8:45 AM
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