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A. Penland
A. Penland, Ford Senior Master Technician, ASE
Category: Mercury
Satisfied Customers: 6480
Experience:  ASE Master Certified. ASE Gasoline Engine Performance Certified,Ford Senior Master Technician
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Just started having to pump gas to get car started. then it

Customer Question

just started having to pump gas to get car started. then it acts flooded for a min. want start at all without the pumping deal
JA: Has the vehicle turned into a gas hog? And how does it start -- same as usual?
Customer: no hog......starting acting up last nite at stop lites
JA: What year is your MINI?
Customer: mini?
JA: Are you fixing your MINI yourself? What have you tried so far?
Customer: plusg, new air filter
JA: Anything else you want the mechanic to know before I connect you?
Customer: wife has car but, she is 800 miles away
Submitted: 5 months ago.
Category: Mercury
Expert:  A. Penland replied 5 months ago.

What year an model Mercury are you working on?
Can you give me the VIN#?

Customer: replied 5 months ago.
Its a v8
Expert:  A. Penland replied 5 months ago.

What model and year Mercury?

Customer: replied 5 months ago.
2004 VIN 2MEFM74W14X641203
Expert:  A. Penland replied 5 months ago.

Thank you. When you state it is acting up at stop lights, what is it actually doing?
Stalling....idling rough.....engine RPMS going up and down.....?

Customer: replied 5 months ago.
Idel e......
Customer: replied 5 months ago.
Has been running gteeat till now
Expert:  A. Penland replied 5 months ago.

You may have a fuel pump going bad, but I would recommend having the fuel pressure tested properly while the problem is occurring. You will need to have a fuel pressure tester gauge set to properly test the fuel system.

Customer: replied 5 months ago.
Expert:  A. Penland replied 5 months ago.

Not really. Unless the air filter is clogged, but then it would happen all the time, not just at stop lights.

Also, having the vehicle scanned for trouble codes in the engine computer may help narrow down any possibilities.

Customer: replied 5 months ago.
wife had checked..... would nt the fule pump go stright the a air flow sensor/ idel sensor on the model?
Customer: replied 5 months ago.
what is a good fule pressure for that car so i can tell her
Expert:  A. Penland replied 5 months ago.

Yes, there is a MAF (Mass Air Flow) sensor mounted in the air intake tube near the air filter. But the fuel pump can go out completely and it can also slow down because it is an electrical motor.