Crank no start

Tiny
AARON DIXON
  • MEMBER
  • 2003 BUICK LESABRE
  • 3.8L
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
I have spark, fuel pump is working. I changed MAS airflow sensor still no start.
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Wednesday, January 12th, 2022 AT 2:59 PM

1 Reply

Tiny
SEAN M
  • EXPERT
Hello,

Have you checked to see what the fuel pressure is?
It is possible to have a weak pump of a faulty regulator which won't allow fuel to enter the cylinder.
On this vehicle with the key on and engine off it should have 53-59 PSI of fuel pressure.

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

Also, what symptoms did you have before this crank/no start issue?

https://www.2carpros.com/articles/car-cranks-but-wont-start

Please let me know a bit more details.
Thank you.
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Wednesday, January 12th, 2022 AT 5:56 PM

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