Hello. I've been having an issue with my car for about a
month now, in the morning my car starts like normal but
after it's warm and I park if it sits for anything longer than
30 or 40 minutes it acts like it has trouble starting and after
a couple seconds it fires up and kind of blubs for another
couple seconds, some start ups are worse than others and
when it's bad (barely starts) I can smell gas coming from
the exhuast for a few seconds until it seems to clear out
and runs perfectly normal after. I have a new battery, spark
plugs, coil packs, and fuel pump. I've been trying to find
somebody with an issue that matches this but I can't seem
to find an answer to point me in a direction
Could be fuel pressure regulator. Allowing fuel leakage into cylinders after ignition shutoff. I had these same conditions on a 99 yukon. Changed the regulator (and the spider injectors since I was already there) and problem was gone.
I'm having the exact same problem with my 2013 Veloster turbo. I go out to start it and sometimes it starts right up and other times it hesitates and winds. Dealership looks at me like I'm crazy because it's not on their computers ;/
After dealing with this for almost a year my car finally threw a code and it was the crankshaft position sensor, replaced that and I haven't had an issue since
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