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Hard to start Corolla

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Hello 

I have a 2007 Corolla s 135k miles automatic Has a small evaporator leak. Changed gas cap and nothing. Mechanic put smoke machine, and couldn’t find it.

it also has a problem that sometimes it’s hard to start.  cranks several times to start, but not always.

mechanic pressure tested fuel pump, and changed filter.

what could it be?

thank you. 

1 Answer
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EVAP = Evaporative Emission Control System

 

The "evaporator" is part of the air conditioning system.

 

If you have a diagnostic fault, please post the whole thing.

 

https://www.youtube.com/c/ScottyKilmermechanic/search?query=evap

It’s P0456.
Would that make it hard to start?

depends. What does it mean? It looks like a jumble of letters and numbers.

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