Samuel Joseph

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?

Scottieinoz

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

Samuel Joseph

thank you, what do the injector lines look like?

Scottieinoz

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

Samuel Joseph

For sure, I've just turned 19 and my plan is to be driving the c43 in about may but for now it's a project

Scottieinoz

You will get there, You tube is your best place to start

speed43

Did you make sure you installed the fuel filter correctly? I think it has an arrow to show which way the fuel flows….

DRBC43AMG

Correct if I recall

Sulaco

New filter installed backwards, most likely. It only allows flow in one direction.