Hard cranking when starting in the morning 2012 Mazda 2

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18/01/2022 4:18 pm

Topic starter

I have 2012 Mazda 2 (Demio) and the issue is intermittent hard cranking at starging in the morning when the car is cold as it is cranking for first trial but not running then it is running at second time of starting

I observe this issue after fuel injectors cleaning and change the fuel type to highier number of octan

Note:

- Fuel injectors cleaned recently

- Spark Plags replaced

- Ignition coils checked and replaced tge fulty one

- Air Filter New

- Mass air flow sensors cleaned

What is the issue?

Yaseen456200

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2 Answers

18/01/2022 4:42 pm

When was the fuel filter last changed on this 10 year old Mazda? Have you cleaned the MAP sensor and the EGR valve. How about the PCV valve?

Doc

(@doc)

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Thanks dear, Never change fuel filter as it is not coming separately, it is full set with the pump

This car coming with MAF sensor instead of MAP and the same has been cleaned already

I did nothing on EGR & PCV Valves

By Yaseen456200 Topic starter 19/01/2022 3:20 am

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18/01/2022 7:56 pm

I would say change the fuel filter and have the fuel pump pressure test it could be a clogged filter or a fuel pump that's weak.

scottykilmer

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Thanks Scotty,
Never change fuel filter as it is not coming separately, it is full set with the pump
Should i go with checking electricity and relays of the pump than check the pressure ? What you think

Thanks

By Yaseen456200 Topic starter 19/01/2022 3:24 am