How to Check your Fuel Pressure Without a Gauge / How to Check Fuel Pressure with a Scan Tool

I cover how to check your fuel pressure without a gauge or how to check fuel pressure with a scan tool, just an OBD2 diagnostic scanner. Car fuel problems can be challenging to troubleshoot, and how to check fuel pressure without a gauge is essential to save time and if you don't have a fuel pressure tester. To check fuel pressure with a scan tool or check fuel pressure with a scanner is easy and can help diagnose a failing fuel pump. I use the Autel MP808TS in this video, but most scan tools that can read manufacturer livedata can be used.
Get from Amazon:
- Improved MP808TS - amzn.to/3J96Ss1 (use DIYMP808ZTS for 8% OFF!)
You can also get the Autel MP808TS from Aliexpress: s.click.aliexpress.com/e/_AAGO0F
I may earn a small commission from a purchase made through the link above. This does not increase the price you pay in any way.
Timestamps:
0:00 - Intro
0:36 - Getting ready for the test
1:10 - Check fuel pressure with a scan tool
2:14 - Checking pressure at higher RPM
3:05 - Explaining results & out of spec findings
#fuelpump #DIYAutoworksNG #weakfuelpump

[@OgunjobiDavid]

Nice info. This really helped me diagnose fuel delivery problem on my 2005 Ford. And thanks to the ThinkDiag scanner. Very useful and informative

[@DIYAutoworksNG]

Great to know! 👌🏼

[@abdul-kabiralegbe5660]

A nice stress-free test. The presence of this sensor is one reason I prefer GDI systems. On port injected designs however, there USUALLY is an annoying absence (they love their mechanical regulators: Toyota, I'm looking at you!).

[@DIYAutoworksNG]

🤣🤣🤣🤣. The 2nd part of your comment just cracked me up. @mechanical regulators😆

[@804MRMAN]

Toyota/ Lexus motto is "Maintain your car, and you'll never have failures... and if you do, ALL OF IT GETS REPLACED AT ONE TIME"

[@mdshaifunas4852]

i like your all video. thank you for video.

[@DIYAutoworksNG]

Thanks! 👍🏼

[@okparasamson7984]

Nice one!

[@DIYAutoworksNG]

Thanks!

[@oqhr]

Hi man. Can you please do in detail comparison between Xtool D8 BT and Autel Maxipro MP808bt or MP808ts?

[@DIYAutoworksNG]

I haven't used a XTool D8 BT but from the specs I've seen online, it's meant to be on the same level with the MP808BT. The only difference between the MP808BT and the MP808TS is that the latter has the capability to activate TPMS sensors and is able to program universal Autel TPMS sensors. All these 3 scan tools are able to code ECU's and are fully bidirectional.

[@bobbyomekam8043]

@@DIYAutoworksNG You're a knowledgeable handy man... Kudos

[@seunfire]

Wow this is great news

[@DIYAutoworksNG]

Yep. Can help prevent uneccesary replacement of fuel pumps.

[@Franklinveterinarycenter1of4]

does this scanner do LML duramax desired and actual fuel rail pressure?

[@DIYAutoworksNG]

Depends on the communication protocol your car is built on, plus if your car has a fuel pressure sensor. Cars built on the CAN bus protocol usually have fuel pressure sensors and will output desired and targeted as part of live data.

[@8power0]

GOOD INFORMATION ,, THANKS FOR YOUR TIME !!!!!!

[@DIYAutoworksNG]

You're welcome 🙏🏼

[@bobbyomekam8043]

Hello sir please can you check on your D7 whether it can do smart key for 2017 rav4 Toyota. Thanks... Cool video though.

[@DIYAutoworksNG]

Hi Bobby, apologies for the delay. I needed to check the function list on the tool before I respond. Yes. Adding a key and all keys lost are listed for the 2013 - 2018 Rav4.

[@bobbyomekam8043]

@@DIYAutoworksNG Oh thank you I'm glad to know that. Just got an ez400pro similar to d7

[@DIYAutoworksNG]

Congrats on your purchase!

[@macgyver1408]

Can i do this on xtool d7.

[@DIYAutoworksNG]

Yes

[@dridful1057]

I couldn’t find the fuel pressure with my new Xtool A30M, could you guide me on what it would appear as on that specific device?

[@DIYAutoworksNG]

What car is it?

[@dridful1057]

2010 honda crv

[@DIYAutoworksNG]

If you go into Diagnosis and select the Engine module, and then live data, you should have the fuel pressure sensor data. The car is CAN OBDII protocol right?

[@dridful1057]

I can’t find that one, I only see fuel tank pressure etc nothing of just fuel pressure :/

[@aymanmohamedibrahim613]

Make us a video tutorial about the car fault detector how to check the left and how to program Merge them into one Video clip in order to benefit from intermittent viewing

[@DIYAutoworksNG]

I think you mean what I did in this video kzbin.info/www/bejne/hWauemN9fbOLbbs

[@WV591]

never saw fuel pressure PIDs, must be Honda thing. wonder if Xtool D8 BT and Artidiiag/topdon 800 BT would show those two PIDs.

[@DIYAutoworksNG]

Can't believe I missed this comment! Apologies. Not really a Honda thing per say. It's seen in cars with a fuel pressure sensor. I expect both of those tools to have those PIDs in supported cars.

[@804MRMAN]

I have the Xtool D8 and works pretty much the same as saw with the Autel in this video. The D8 and all higher end Xtools are CONSTANTLY updated. I bought mine in 2021 with about 28 services on it, it's now up to like 40 services, they've changed the Live Data to allow 3 screens simultaneously etc

[@carldehoney8633]

What if the vehicle doesn't run ? And there is no valve stem on the fuel rail

[@DIYAutoworksNG]

No you can't use this particular test. However, if the car uses the CAN protocol and above, you could get a sense by reading the fuel pressure sensor value in live data just with the ignition on. It's not definitive but should help. May also need to use a traditional fuel pressure tester if the car is not direct injection. There are kits you can connect to the fuel hose that leads to the fuel rail, and read the pressure from there.

[@femiyusuf5615]

Good sir please is there a site i car performs car inspection. I have the vin number

[@DIYAutoworksNG]

You can shoot me an email. I'll prefer to keep comments on the topic of the video. Thanks. [e-mail] or reach me on Instagram.

[@804MRMAN]

@DIYAutoworksNG Was the person trying to ask you to do a Remote Diagnostic scan on their vehicle?

[@DIYAutoworksNG]

Just reading this again, sounds like a site for VIN search...

[@804MRMAN]

@@DIYAutoworksNG Oh OK

[@carloschock5602]

Hi, I have idle 3.91% LTFT -0.78% STFT, 3.13% LTFT 2.34% STFT, revved at 2500 rpm 9.38% LTFT -5.47% STFT, 9.38% LTFT 4.69% think I'm about to develop a fuel delivery problem, is this correct?

[@DIYAutoworksNG]

Before I respond, can you double check the fuel trims you posted at 2500RPM... It will also help if you identify the fuel trims by banks.

[@carloschock5602]

@@DIYAutoworksNG its only one bank. idle 4.69stft 1.56ltft, high rpm same 4.69stft 9.38ltft

[@carloschock5602]

@@DIYAutoworksNG 30 secs later idle 2.34stft/3.13ltft and -5.47 stft / 9.38 ltft

[@DIYAutoworksNG]

I won't be bothered since it doesn't exceed 10. But your insinuation is right, if it continues and rises, possibly some restriction in fuel supply - clogging of injectors, fuel strainer, fuel pressure regulator or fuel pump. I usually start by dumping a can of a good injector cleaner in the tank...

[@bobbyomekam8043]

One more thing sir... Can I have your email. Would like to discuss in detail something about passthru devices

[@DIYAutoworksNG]

IG may be better. @piykediyautoworksng

[@bobbyomekam8043]

@@DIYAutoworksNG Oh I don't use IG. anyway I guess I'll discuss it here then...

[@DIYAutoworksNG]

[e-mail]

[@bobbyomekam8043]

@@DIYAutoworksNG Thanks

[@jtcmpp1]

Can I check the fuel pressure with this on a 96 ToyotaCorolla?

[@DIYAutoworksNG]

No. I believe support became possible on cars using the CAN protocol and have fuel pressure sensors.