Po300 and surges while driving.
Dec 26, 2018 at 6:47 AM
Misfire code Po300 and surge
FARR2007
- MEMBER
- 244 POSTS
Good evening,
I would start by checking the fuel pressure as this is the most common reason for a code 300. low fuel pressure will not provide enough fuel to the injectors for proper fuel mapping.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
How old are the tune up parts?
https://www.2carpros.com/articles/engine-surges
Roy
I would start by checking the fuel pressure as this is the most common reason for a code 300. low fuel pressure will not provide enough fuel to the injectors for proper fuel mapping.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
How old are the tune up parts?
https://www.2carpros.com/articles/engine-surges
Roy
Dec 26, 2018 at 6:53 AM
Where is the pressure regulator location?
Dec 26, 2018 at 10:21 AM
The regulator is part of the fuel pump module in the fuel tank. it is not external.
Roy
Roy
Image (Click to enlarge)
Dec 26, 2018 at 10:28 AM
Where on that diagram?
Dec 26, 2018 at 12:41 PM
Would a vacuum leak do that too? Also, how to you swap the fuel pressure?
Dec 26, 2018 at 2:20 PM
It is part of the pump.
you replace the fuel pump assembly.
no, a vacuum leak will not effect fuel pressure.
Roy
you replace the fuel pump assembly.
no, a vacuum leak will not effect fuel pressure.
Roy
Dec 26, 2018 at 7:38 PM
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