Hard start and while driving it loses power

2010 PONTIAC G6
125,000 MILES • 3.5L • 6 CYL • 2WD • AUTOMATIC
Avatar
TAMMY LYNN MONROE
  • MEMBER
  • 1 POST
When I try to start the car sometimes it won't start. It will lose power when driving also. It will take several hours for it to finally start. I've had it diagnosed at Car Care and they were unable to diagnose anything wrong. Please tell what can be wrong? I need my car for work, I'm a door dash driver.
Mar 3, 2021 at 3:47 PM
Advertisement
Avatar
ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Good evening,

I would check the fuel pressure to be sure the fuel pump is working.

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

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

FUEL PRESSURE

Fuel Pressure (Key ON, Engine OFF) .................... 386-427 kPa (56-62 psi)
Should not decrease more than .................... 34 kPa (5 psi) in 1 minute

I attached the location of the tap for checking the pressure below.

Roy
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Mar 3, 2021 at 3:58 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.