Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
Hi and welcome to Just Answer! No this code will not cause no start. What is your fuel rail pressure?
Not sure if you have scan tool able to read rail pressure. If pressure does not go up to(###) ###-####psi computer will not open the injectors, Common problem is leaking injector(s) back into return fuel line. Use brake cleaner as starting fluid and spray small amount into intake manifold during cranking time. PLEASE BE CAREFUL USING STARTING FLUID OR BRAKE CLEANER SPRAY CAN- YOU MUST USE SMALL AMOUNTS ONLY IF YOU SPRAY TOO MUCH YOU CAN DAMAGE THE ENGINE, BUT SMAL AMMOUNTS IS SAFE,
if engine starts and stays running, you have injector leak.
please check and let me know, Regards Pavlin!
Good morning, you can remove the hose between intake manifold and air cooler on the passenger side. Or if you standing in front of the vehicle is to your left. Hose has a clip. You pull up this clip and pull out the hose. It takes couple of minutes.
Yes it is safe if you spray just small amount. Yes I know it is diesel. No I have not seen that post. But try this and let me know the result
Yes I will keep this open, you can reply here when you have more information
I may not be able to respond to you right away because I am working in the shop but will keep checking my messages
as often as I can.
Hi, this reading isn't correct. You should see about 3000- 4000 psi on Idle. It vehicle is running pressure is good, it is the scanner I guess. What is the name of it?
okay, this tool should read standard ODD II info, but for some reason is not reading properly, best is to use diagnostic scan tool
again proper idle pressure is 3000 or 4000 or even 5000psi
during cranking pressure should rise very quick from 0 to up to a 1000 psi when engine fires.
if pressure is low during cranking, then you have internal leak from injectors or pressure regulator
but I never have had problem with regulator it is always injectors, when vehicle is hot everything expands causing the issue.
if you can please check with different scanner and get back to me
Sure you can go thru filter intake port , I always prefer to go direct. But this is my own preference.
Okay, so we know that we have loss of pressure. Please buy a can of brake cleaner and keep it in the car. Starting fluid has higher detonation and do not like to use on this engine.
Let me know, thanks!
Must find which injector(s) is(are) leaking and replace them. If fuel return lines are disconnected at the time car is not starting and you crank the engine, observe which injector is leaking through return port. Replace leaking injectors and problem is solved.
No, those pumps are good.
Because it expands when hot, you have tested the pressure and confirmed that it is low. Next is to spray into intake when no start. I have seen this many times. I have no chance to work on your vehicle, but symptoms are very similar.