Roperteacher

hey there! I installed my GDP 2 micron big line kit and have a tiny bit of diesel seepage and need to re do the teflon tape on the outlet side. I am using the yellow kind, diesel fuel rated. How many threads do you cover with it? do you put a single layer of tape on or is it ok to put a couple layers before re tightening? Thanks!

mini14

u need to do a minimum of 2 wraps, id go at least 3/8" if u go higher it doesnt matter. i usually go 3 times around any less u will leak, any more u might crack a brass fitting.

Roperteacher

I think I only put on 2 wraps! Thanks for the advice, I will put a couple more layers on it when i re do it!

mini14

was wondering if any of u who have the gdp kit, and taken the truck in for service have been denyed any warrenty due to "mods"...

Roperteacher

I had to have a #5 injector replaced on my truck the week before installing the GDP kit. That was my reason for installing it. I was and still am running a 5 micron Baldwin in the stock canister. I thought that was enough. Bosch recommends a 3 micron filtration I believe. Dodge settled with them on 7 microns. I use a fleetguard Fuel filter ( Made by cummins). The dealer that put in the new injector gave me their BLESSING to use 2 micron filtration... Don't see how they can claim a warranty issue when you have BETTER filtration. Chevy and I believe ford already use 2 micron from the factory... Hope that helps! I know CTD owners that have Oil by pass systems AND the GDP kit who's dealers say is fine.

ptgarcia

My dealer has never given me any grief.

triplenickel

The instrumentation tech I work with says 2.5 wraps on NPT.

applied_gravity

The advice I got, forget from who, was to go with the teflon paste - took a bit to find it, but worked great!

Bill

Deezel Nate

Any decent hardware or plumbing store will have several kinds of the teflon paste.

For the tape, I normally put 3-4 wraps

PRO-NRA

I also have a GDP set up but is not leaking through the AN and NPT fitting buth through the filter thread itself. I've tighten it so tight with a strap wrench that I dented the filter housing. How do I stop it from leaking? Also, where do you get the yellow teflon for diesel fuel?

06trx

Make VERY sure you leave 1 or 2 threads clear of tape, you don't want any tape going down stream.

rjm022

telfon paste! i think it is easier to work with.

Dangerous Dave

Pressure Washers use diesel/kerosene and I use plain white teflon in 3 wraps on all the fittings and have never had a problem with it.

Be advised though that there are good teflon tapes and CRAPPY teflon tape. The crappy stuff is stringy.

Roperteacher

I bought the yellow tape from Home depot. I took off the fitting, added 3-4 wraps of the tape and BAM no more leak!!

XLR8R

We use the high-temp high-pressure yellow tape.