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How to check fuel pressure

Posted

Anybody know how to check vp44 fuel pressure without a chip or monitor screen? Trying to troubleshoot my truck and need to check the fuel pressure. 

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Depending on the year of your truck you may have a Schrader valve at the input line on the VP.  This will only check the pressure coming out of the LP.  If you are wanting to check the pressure coming out of the VP then I am not the one to answer that. 

  • Owner

The whole problem the gauge needs to have about 6 feet of hose on it. The gauges for rent from part stores are typically about 1-2 foot long. This will not work being you need to measure fuel pressure at highway speed and loads. Idle fuel pressure will show typically higher than what is road speed loads will. 

 

Like this one would do the job...

http://www.vulcanperformance.com/VPMAX-Fuel-Pressure-Tester-Test-Gauge-Schrader-p/fpt.htm

 

At that rate you would be best to just install a fuel pressure gauge in the cab and be done...

As long as the gauge can reach just up out the hood in front of the windshield you're good. Although I have the gauge from Vulcan that Mike linked, you only need the gauge to reach up from under the hood in front of the windshield so you can see it when driving.

  • Author

I’m thinking that now that I’m going to go back to the qaudzilla adrenaline I might as well wIt till I install that and check the fuel pressure then... will the obdlink read fuel pressure? I’m also curious if I should order the qaud with 1000 or 2000 base tunes?

  • Owner
1 hour ago, Marcus2000monster said:

will the obdlink read fuel pressure?

 

No. There is no fuel pressure sensor on the ECM or engine. It can only read the available sensors by the ECM.

 

1 hour ago, Marcus2000monster said:

I’m also curious if I should order the qaud with 1000 or 2000 base tunes?

 

For sure the 2000 series tunes. 

Mike v2 and 2000 are vastly different.  1000, 2000, beta are all old school tunes with none of the v2 goodies

Have you sorted the rest of the issues you have posted about?   I would not suggest you buy ANY tuner untill you get things sorted.  

  • Author

Well I’m working on it slowly but like I said I thought about getting the tuner to check fuel pressure since I wupl be getting it anyway ... what all should I test? Right now it seems like it’s running good without any tuner and the cel light went off but I’m waiting for my obdlink to arrive to check for codes. 

  • Author

Could one of you give me a rundown on what all to test? I have fuel pressure map sensor voltage to do and what else should I be looking at?

Please review all the threads you have posted on CF.  There are alot of things to test in those already.  I can't remmeber all the issues you have posted now.  

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Welcome To Mopar1973Man.Com LLC

We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.