Hard to start when cold

1995 LEXUS ES 300
147,000 MILES • 3.0L • V6 • 2WD • AUTOMATIC
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JBONES
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when engine cools down hard to start after warmed up easy start.
Mar 14, 2018 at 4:44 AM
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ASEMASTER6371
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Good morning.

Does it crank normally when it is hard to start?

Roy
Mar 14, 2018 at 5:11 AM
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JBONES
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yea cranks over good. put new plugs, fuel injectors, and new egr valve. didn't replace the gas temperature sensor
Mar 14, 2018 at 3:01 PM
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JBONES
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when engine at room temperature cranks 8-10 revolutions once started it will start at the touch of the key
Mar 14, 2018 at 3:06 PM
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ASEMASTER6371
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Are there any codes??

Two things come to mind:


1. Coolant temperature sensor.
2. Intake air temperature sensor.

Roy
Mar 14, 2018 at 3:26 PM
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JBONES
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Here is what I did this morning. After about ten cranks engine started. I shut engine off immediately, waited one minute. started right back up. going to check for codes. almost acts like losing fuel pressure.
Mar 15, 2018 at 5:09 AM
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ASEMASTER6371
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Correct. I would start by checking the fuel pressure. leave the gauge on the car overnight so you can see if the system is losing prime.

Roy
Mar 15, 2018 at 5:16 AM
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RENEE L
  • AUTOMOTIVE REPAIR CONTRIBUTOR
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Hello JBONES,

Thank you for visiting 2CarPros. Here is a helpful link to an article from this site with step by step instructions and pictures explaining the process of checking the fuel system pressure, regulator and fuel pump in less than fifteen minutes:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

If you need further assistance please come back to the site we are always happy to help.

Kindest regards,
Renee
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Mar 19, 2018 at 12:02 PM