How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask MB Paul Your Own Question
MB Paul
MB Paul, Mercedes Technician
Category: Mercedes
Satisfied Customers: 3567
Experience:  Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes
15777119
Type Your Mercedes Question Here...
MB Paul is online now
A new question is answered every 9 seconds

Fuel pressure goes to zero when ignition is turned off. :

Customer Question

fuel pressure goes to zero when ignition is turned off.
JA: How many miles are on the car? Have you had the fuel pressure tested recently?
Customer: 85k and no
JA: Tell me a bit more about what's going on so he can help you best.
Customer: the car runs fine and starts ok.
JA: Are you hoping to fix this yourself?
Customer: yes
JA: Great! What have you tried so far?
Customer: just measu8red the pressure
JA: Is there anything else important you think the Mercedes Mechanic should know about your Mercedes?
Customer: the mass flow was just replaced and the crank position sensor.
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Mercedes Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: Mercedes
Expert:  C. Walker, Jr. replied 1 year ago.

It is normal for the fuel pressure to drop off when you turn the key off. What kind of issues are you currently having?

Related Mercedes Questions