fuel pressure gauge install question.
 

So i bought the gauge with the gauge kit and am getting ready to hook it up, Do i need to use the pressure gauge isolator shown in the pics? and if so what does it do? also i have a schrader valve coming off of my vp44 can i plumb the gauge in there?
http://www.mazdas247.com/members/THE...ekpressure.jpg
http://www.mazdas247.com/members/THE...lpressure1.jpg

Yes you need the isolator, it prevents fluctuations caused by the vp. And yes it can go where the schrader is, once it's been removed.

A needle valve will prevent water hammer. The isolator will keep you from having to run fuel into the cab. The isolator will have fuel on one side and antifreeze on the cab side. I don't mine having fuel in the cab, but some people don't like it. Hook your fuel line to the shrader valve on the vp then to a needle valve then to the isolator or the gauge.

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Did my kit come with a needle valve? or will i need to buy one?

Also i cant pm yet empty wallet, where are you located in CT? im in Southbury

Mu guess is that it didn't come with one. Go to Napa, they have them.

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do you have a link to said needle valve so i have some sort of idea what im going to ask the guy at napa for lol

Let me look for one.

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lol thanks man.

NAPA (Weatherhead) #WH6820 is the part number.

Mopar1973Man's Dodge Ram Cummins Turbo Diesel Forum - Fuel pressure gauges and needle valves

Also check out this site. Lots of good info.

Thanks man

I have the same setup and I cannot get the anti frezze into the little tube very well... I did it once and it worked for a bit but now my brand new fass 150 and new gauge reads 5psi which I know is not correct cause there is air in the little clear tube lines going to the gauge... how can you fix this issue??? im tired of thinking i have 5 psi lol

I dunno man im probably not going to use the isolator thing.

So what would you use instead of the isolator going from 3/8 hose to the small plastic tube???

I didn't really put much thought into it, until i started to put it all together and noticed i pretty much had to use the isolator if i wanted to use the kit they supplied.