not starting after fuel filter change

Nov 23, 2023 | 05:10 AM

Samuel Joseph

Thread Starter

Newbie

Joined: Dec 2022

Posts: 8

Likes: 0

w202 c43

not starting after fuel filter change

Ive recently replaced the fuel filter on my 98 c43 and when trying to start the car, nothing! It's as if there's no fuel pressure in the system. Does this mean I need a new fuel pump or is there too much air in the system. Any ideas?

Nov 23, 2023 | 05:25 AM

Scottieinoz

Newbie

Joined: Nov 2023

Posts: 4

Likes: 0

Mercedes Vito 113CDI

If you had no issues before changing then it is most likely air, Just crack the injector lines by a quarter turn and turn the car over untill fuel is coming out the car will likely start and run rough and just tighten each injector line 1 by 1 and you should be all good.

Obviously watch for rotating parts when working in and around a running engine

Nov 23, 2023 | 05:29 AM

Samuel Joseph

Thread Starter

Newbie

Joined: Dec 2022

Posts: 8

Likes: 0

w202 c43

thank you, what do the injector lines look like?

Nov 23, 2023 | 05:34 AM

Scottieinoz

Newbie

Joined: Nov 2023

Posts: 4

Likes: 0

Mercedes Vito 113CDI

your a newbie for sure, They are the small lines. Not sure if you are common rail or old school mechanical injector . I would guess the latter. There is small lines about the size of a drinking straw that go from a pump on the end of the engine somewhere and run to the cylinder head. If its a 4 cylinder you will have 4 lines, 6 then 6 lines etc