hows every one doing?i have a bad problem i just got the stock vp and supply pump replaced about 2 1/2 mounths ago andi also install a scttoy smart fuel system and a autometer mech fuel pressure gauge well at first idle was at 14 psi and at wot no less then ten but the other day i was just crusing down the road it the gauge just went to zero and satyed there and nutthin then it just comes back up to 14 psi and now it will sometimes just flutters and then it just goes down to zero and stay no movement i have a needdle valve on the gauge so what do yall think is the pump bad or the gauge maybe??? thinks for the help

 

any body got any advice on this??

 

I would verify all connections in the fuel system, see if you can get another gauge on it to verify your readings (I think there is a port on the VP?)
If the readings are correct, it sounds like your LP is going south, you should verify the electrical connection to it - does this happen at idle, so you could put an ear on it in the driveway, see if it is getting juice and / or running?

- IF those reading are correct, you're going to need to get a new LP installed ASAP!

 

If you have an isolator in the FP line to the gage that might be the problem. I had mine dorp to zero after it was in for a while. Was the isolator.

 

today i checked all fuel hook ups and the fuel gauge the gaughe is a mech gauge also today the fuel pressure stayed on zero for at least forty miles but if the vp44 was haveing to pull its own fuel wouldnt that make my gauge pressure come up instead of it staying at zero???

 

If the VP is pulling its own fuel there *should* still be a noticable psi reading on the gauge. Fuel doesnt magically flow at no pressure.

 

thats what i was thinking but the gauge will go to zero and set there is there a way to tell if its the gauge or the pump?

 

try a diffrent gauge.. i used a gauge of an old air compressor. ( only temporary)
just to get a reading or not!