fuel Pressure ???
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Originally Posted by Duane99
Does anyone know the size of port at the back of the fuel filter canister to hook up a guage to?????
1/4 npt ?????????
1/4 npt ?????????
Those are 1/8" NPT.
I've never had the one out of the back of the fuel filter housing to know for sure.
Logistics Pro
Joined: Aug 2005
Posts: 3,884
Likes: 180
From: Morgan Hill, CA
It's not NPT, it's like -4 AN or something like that. Dieselsite has the adapter to 1/8" NPT for $6.
http://www.dieselsite.com/index.asp?PageAction=VIEWPROD&ProdID=217
http://www.dieselsite.com/index.asp?PageAction=VIEWPROD&ProdID=217
Lead Driver
Joined: Oct 2004
Posts: 7,413
Likes: 1
From: Columbia, MO
I bought mine at a hardware store for something like $2.00. I just took the stock plug out and went to the store to find comparable threads. But, it is not NPT. Like FD said, it's a straight thread similar to 4 A/N. I think it's a 1/4" or 3/8" flare fitting. Find the adapter to go to 1/8" NPT. The only thing I had to do was grind off the flared part to make it flat. You can also pick up a new o-ring while you're there if the stock one can't be re-used.
