i have spark, fuel pump is working. I changed MAS airflow sensor still no start.
Jan 12, 2022 at 2:59 PM
crank no start
2003 BUICK LESABRE
AARON DIXON
- MEMBER
- 1 POST
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SQM
- ✓ASE Certified Mechanic
- 6,383 POSTS
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.
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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Jan 12, 2022 at 5:56 PM
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