Mazda cx 7 hard to start when warm - Mazda Forum - Mazda Enthusiast Forums


Mazda CX-7 This sporty turbocharged 4 cylinder SUV combines the spirit of a performance car with the versatility of an SUV.

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Old 11-10-2017, 04:09 AM
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Default Mazda cx 7 hard to start when warm

Hi All
I have a 2009 CX 7 and when itís warm (after driving for at least 20 minutes and turn off for 5 mins), hard to start. Sometime takes 4-5 cranks to start. It starts fine when itís cold.
Went to mechanic, he changed the air flow sensor and crank sensor however the problem is still there. Seems to me it doesnít get fuel. I am thinking of either fuel injectors or fuel pump or engine coolant temperature sensor.
Any suggestion would be helpful.
Thanks
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Old 11-11-2017, 05:17 AM
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Get someone to check fuel pressure. If it drops off/drains off with the key off, then you have an issue.

Has it been scanned for fault codes?
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Old 11-11-2017, 06:07 AM
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Sure I will ask my mechanic to check the fuel pressure.

It has been scanned for fault codes and that’s why my mechanic changed airflow sensor and crank sensor. Now codes are fine.
I will keep you posted.

Any other suggestion would be helpful.
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