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Hard to start when cold

Tiny
JBONES
  • MEMBER
  • 1995 LEXUS ES 300
  • 3.0L
  • V6
  • 2WD
  • AUTOMATIC
  • 147,000 MILES
When engine cools down hard to start after warmed up easy start.
Wednesday, March 14th, 2018 AT 4:44 AM

7 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning.

Does it crank normally when it is hard to start?

Roy
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Wednesday, March 14th, 2018 AT 5:11 AM
Tiny
JBONES
  • MEMBER
  • 4 POSTS
Yea cranks over good. Put new plugs, fuel injectors, and new egr valve. Didn't replace the gas temperature sensor
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Wednesday, March 14th, 2018 AT 3:01 PM
Tiny
JBONES
  • MEMBER
  • 4 POSTS
When engine at room temperature cranks 8-10 revolutions once started it will start at the touch of the key
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Wednesday, March 14th, 2018 AT 3:06 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Are there any codes?

Two things come to mind:

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

Roy
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Wednesday, March 14th, 2018 AT 3:26 PM
Tiny
JBONES
  • MEMBER
  • 4 POSTS
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.
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Thursday, March 15th, 2018 AT 5:09 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
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
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Thursday, March 15th, 2018 AT 5:16 AM
Tiny
RENEE L
  • ADMIN
  • 1,260 POSTS
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
Admin
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Monday, March 19th, 2018 AT 12:02 PM

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