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Why does my 2009 Holden Astra have trouble starting after sitting overnight?

Asked by Tammy

My 2005 Holden Astra has trouble starting the first time, when left sitting for anything like six hours plus. Doesn't matter if its day or night, cold or hot days, once it is started there’s no issue what so ever. I’ve been to two different mechanics and still have the same issue.

Answered by CarsGuide

11 Sep 2020 David Morley

These cars used a fairly simply check-valve on the fuel pump to prevent fuel draining back into the tank when the car was parked. As the car ages, this valve wears to the point where it won’t maintain fuel in the lines going to the engine. If that happens, it will take some time and cranking to get fuel from the tank to the engine. This is the delay you’re experiencing.

The worn valve is only allowing a small amount of fuel to drain back which is why you need to wait six hours or so for the problem to show up. A new fuel pump will fix it.

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