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Chris
Chris, Auto Service Technician
Category: Mazda
Satisfied Customers: 12736
Experience:  43 years of automotive repair, Smog license
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Cranking, almost no start for several minutes before car

Customer Question

Long cranking, almost no start for several minutes before car starts. Only when car sets for 3 hrs. or over night
JA: Will the headlights turn on? Is the battery fully charged?
Customer: Yes. After it starts it runs fine. And cranks fine through out the day
JA: What is the model/year of your Mazda?
Customer: 2004 mpv
JA: Are you fixing your MPV yourself? What have you tried so far?
Customer: Yes. I have changed the mass air flow sensor
JA: Anything else you want the mechanic to know before I connect you?
Customer: It's cranks fine when engine is warm through out the day
Submitted: 29 days ago.
Category: Mazda
Expert:  Chris replied 29 days ago.

Hello, my name is ***** ***** will assist you today. I have seen this before and it is usually a check valve in the fuel pump causing this. What happens is when the vehicle sits for a while, fuel drains out of the fuel rail and lines and back into the fuel tank. Then when you go to start it the fuel pump has to prime the system before it will start. That can take a bit and this is why you have a long crank before it fires. Have a shop connect a fuel pressure gauge and confirm this. Then have the in tank fuel pump replaced. I am pretty sure this is your problem.

Chris

Expert:  Chris replied 28 days ago.

Hello? were you able to see my answer?

Chris

Expert:  Chris replied 25 days ago.

Hello? were you able to see my answer?

Chris

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