Jump to content

Fuel Pressure Gauge - Electronic or Mechanical???


Recommended Posts

I have a DiPricol mechanical gauge and had problems with the isolator, replace that with the needle valve set-up as decribed on this site. I still have the gauge dropping from about 15psi to ZERO and back up to 15. I've tried opening the valve more and closing it more with no change in the action of the gauge. You'd think that if the fuel pressure was truly dropping to zero the engine would let me know. Maybe it was the gauge all along and not the isolator?I'm going to replace the gauage and would like to install an electroinc unit to keep fuel out of the cab. I've seen there have been some problems with the electronics. Any suggestions on them and which seems to be best?Thanks.

Link to comment
Share on other sites

I have the Edge Attitude monitor but not sure how accurate they really are. It does say the same as what an old make shift mechanical gauge I had cobbled up told me I had for psi. I would sooner have mechanical but the edge gave me other stuff I wanted so it was best for me. I always liked the look of the Dipricol gauges. I wouldn't be to worried about fuel in the cab if it were me doing it. That's just my opinion tho. :2cents:

Link to comment
Share on other sites

  • Administrator

Most electric gauges tend to fail at the senders. So about every 2 or so year you replacing senders on electric gauges. As for mechanical they are very safe and typically very accurate. So if it was dropping to zero you truly had a lift pump issues or air issue. As for my DiPricol gauge its over 7 years old and still going strong. No leaks either.

Link to comment
Share on other sites

  • 2 weeks later...
  • Moderator

I have had electrical gauges for years and never had a sender fail. If you get a cheap one maybe, but a good sender will last a long time. I ran Pricol's for several years before switching to ISSPRO about a year ago. Personally I won't run fuel to the cab, and don't want to mess with an isolator. There are too many possible issues with them, and it seems problems are more common with mechanical than electrical.

Link to comment
Share on other sites

Just installed a ISSPRO mechanical gauge two weeks ago. It was very easy to set up and I am running a needle valve with it. If You do it right and use the right tubing, you should never have a problem of fuel in the cab. I like mechanical because there is hardly anything to go wrong with them. Electric, you have power issues, ground issues, sender issues, and the such. Just my ideas.

  • Like 1
Link to comment
Share on other sites

i had the same problem right after i bought my 2002 i had my truck checked bad injector and lift pump had those replaced and a idiot light installed in the post after 3 months the light in the post came on for a few seconds every now and then had the sending unit replaced same problem accured had a mech guage inslalled with copper tubing same problem but this time the pressure guage read 3psi with the light on thepost on the guage shot up to 12psi the light went out at 5 psi i had the lift pump replaced only a year old with a fass ddrp02 no more drop in pressure perfect so far 9 mo later

Link to comment
Share on other sites

  • Administrator

i had the same problem right after i bought my 2002 i had my truck checked bad injector and lift pump had those replaced and a idiot light installed in the post after 3 months the light in the post came on for a few seconds every now and then had the sending unit replaced same problem accured had a mech guage inslalled with copper tubing same problem but this time the pressure guage read 3psi with the light on thepost on the guage shot up to 12psi the light went out at 5 psi i had the lift pump replaced only a year old with a fass ddrp02 no more drop in pressure perfect so far 9 mo later

That's a no no... :nono: Eventually the copper will fail on you from flexing and vibration.

Best thing I've found is Air Brake line and most over the road trucks use the same thing for gauges too.

Link to comment
Share on other sites

  • 3 weeks later...

I know this threads a few weeks old, but I've had an Autometer Ultra-Lite electric fuel pressure gauge in my truck for 4 years, and I've never had problems with erratic readings or senders going bad. Still on the original sender, and I don't even have the snubber that Autometer requires to keep the senders from going out. Whoops!

Link to comment
Share on other sites

You're probably right. I think it's one of those you get what you pay for kind of deals too. I figure since I haven't had any problems with it, I'll just continue running it this way until it dies and then I'll buy a snubber with a new sender.

sounds like a good guage did you buy it from a vender on this site the auto stores around here are ok but i would like a guage that is reliable not like my first lift pump ( just cause it's new don't mean it's gonna work)
Link to comment
Share on other sites

sounds like a good guage did you buy it from a vender on this site the auto stores around here are ok but i would like a guage that is reliable not like my first lift pump ( just cause it's new don't mean it's gonna work)

I bought my gauges from Jegs just because they have a huge selection of Autometer gauges and they have super fast shipping. I would just go to Jegs.com and look through their Autometer gauges. I bought the Autometer Ultra-Lite electric 30psi fuel pressure gauge. 2 5/16"
Link to comment
Share on other sites

  • 2 weeks later...

they only thing i did to prevent the line from rubbing and dumping oil in the cab is i ran the line inside of 1/4 rubber hose, it was left over from running the water line to my refrigerator. i was kind of nervous about the hard plastic line rubbing under the dash or where it goes through the firewall.

Link to comment
Share on other sites

  • 2 weeks later...
  • 1 month later...

I have a dipricol gauge and am going to go electric. However I am keeping the mech gauge as a back up under the hood. Why? Got plans for my inside gauges. Researching on it now. That takes the most time on new projects. :ahhh:

Link to comment
Share on other sites

×
×
  • Create New...