How to test a fuel pump. Learn how to test your fuel pressure, how to test your fuel pressure regulator, and how to test your fuel pump.
This video will show you how to diagnose your fuel system. If your car is idling or running weird (high idle, low idle, hard to accelerate, studdering, hard to start) then this is one of the first tests you should do. Diagnose high fuel pressure, low fuel pressure, a broken check valve in the fuel pump, broken fuel pressure regulator, or leaking injectors.
Here is the fuel pressure tester I used: http://www.amazon.com/gp/product/B0053NZXQA/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B0053NZXQA&linkCode=as2&tag=chri0e2-20&linkId=WJD6YBALKBYZIPAE
What does a 300,000 mile fuel filter look like inside: https://www.youtube.com/watch?v=92TfTQTmuq4
Fuel Pressure Regulator Replacement: http://www.youtube.com/watch?v=yG0y3bqaV7E
**If the video was helpful, remember to give it a "thumbs up" and consider subscribing. New videos every Thursday**
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Disclaimer:
Due to factors beyond the control of ChrisFix, I cannot guarantee against improper use or unauthorized modifications of this information. ChrisFix assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. ChrisFix recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of ChrisFix, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not ChrisFix.
This video will show you how to diagnose your fuel system. If your car is idling or running weird (high idle, low idle, hard to accelerate, studdering, hard to start) then this is one of the first tests you should do. Diagnose high fuel pressure, low fuel pressure, a broken check valve in the fuel pump, broken fuel pressure regulator, or leaking injectors.
Here is the fuel pressure tester I used: http://www.amazon.com/gp/product/B0053NZXQA/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B0053NZXQA&linkCode=as2&tag=chri0e2-20&linkId=WJD6YBALKBYZIPAE
What does a 300,000 mile fuel filter look like inside: https://www.youtube.com/watch?v=92TfTQTmuq4
Fuel Pressure Regulator Replacement: http://www.youtube.com/watch?v=yG0y3bqaV7E
**If the video was helpful, remember to give it a "thumbs up" and consider subscribing. New videos every Thursday**
-Website: https://www.ChrisFixed.com
-Facebook: https://www.facebook.com/chrisfix8
-Twitter: https://twitter.com/ChrisFixed
-Instagram: https://instagram.com/chrisfixit
-Subscribe Here: http://www.youtube.com/subscription_center?add_user=paintballoo7
-YouTube Channel: https://www.youtube.com/ChrisFix
Disclaimer:
Due to factors beyond the control of ChrisFix, I cannot guarantee against improper use or unauthorized modifications of this information. ChrisFix assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. ChrisFix recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of ChrisFix, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not ChrisFix.
Chris, you are the man.
I recently bought a 94 C4 so will be checking this soon. Your videos are a great help.
My C4 is bogging and misfiring badly under load. Seems to be find in Neutral. Was wondering if you had any ideas what may be causing it. I'm thinking either fuel pump or spark plugs? I did change the fuel filter but same issue is there.
Thank you for sharing your knowledge. You do a very good job of explaining things.
Awesome coaching ! Learning lots from you ! Thanks !!
Damn bro you sound so different 😂 never realized how much you’ve grown, been here since 2017
So what happens in the "danger zone"? I'm seeing random detonation/pings under load. My pressure (if gauge is correct) is 21 with vacuum and 30 without. But my trims are barely elevated like 6-10%
Thanks
When I started the engine. It went right up to 70 psi.🤔
Thank you very much. Your video helped us determine our problem. It was the fuel injectors on a 2006 Ford 4.0L engine.
U are the man! Keep it up!
Thank You for pratical, to the point troubleshooting. Bery helpful.
Could a fast drop be due to a stuck open fuel injector?
It needs 4 things to run. Fuel, Fire, Compression and timing. I don't know how many people get stumped by the last one.
👍👍👍👍
For reference, what bar rating is your FPR?
I'd say that perfect fuel pressure in PORT injected engine is 3.2bar (320kpa). Minimum for good work is 2.8 bar (280kpa), and max is 4bar (400kpa). Unless Your car is port injected & boosted. Then You should add boost to those numbers (1bar = 14.7psi. Call it 1bar = 15psi to have easier calculations). And don't push Your fuel rails, lines over their max rating!
Have a great day!