ok, I did bleed it on the Fuel side of the issolator like you said because when i took the banjo bolt outta the pump to replace it with my hose the truck would not start, so i got a buddy to loosin it and then tighten it when the truck started... and let me tell ya.... he wasn't inpressed when there was fuel sprayin' all over him...lol...I was in the safe zone....in the Cab..lol.. the problem is just on the gauge side.theres a little air there.. However i was at the Diesel performance shop the other day and they said the air doesn't mader on the gauge side of the isolator, he side pressure is pressure... There is alot of argguments over this.. Its had to tell what the right way... But when you buy manual gauges new how are you suppose to fill that line..? like that is the stupidest thing i ever seen! if you ever have to take that gauge off for something you have to bleed that line all over again.........?
What a Hassel!
https://www.dieseltruckresource.com/...e=1&p=1030827#
Mad!
VJ

 

I know a lot of guys don't like the idea of diesel in the cab, but my suggestion would be to nuke the issolator, run your hose from the gauge to the needle valve, let the gauge do its job and forget about it. Your buddy will be happier also

 

I like the idea of diesel in the cab. I have heard of maybe 1 or 2 in the last year that have had issue with a mechanical set up.

Probably about 10 or 12 with problems associated with isolators. Not to mention the additional $65.00 they add to the price of the set up......

 

103000 and still going strong.