Glacier Diesel Power Kit + 2 micron Filter Kit

[Tomeygun]

Questiion for other GDP users. I usually fill my tank right up to the vent tube. Should I be concerned about doing this now that there is the bypass return pumping fuel into the fill tube? Is anyone else with GDP pumps filling tank right to the brim?

I dont think this is problem due to you will take as much fuel as you send back (actually less because the motor is running)



Therefore the level will not rise enough to overflow.

 

[JPereira]

Question? Fuel cold or time to change filter?

I have been running the GDP pump and 2 micron filter for a few tanks. When I first installed the idle pressure was around 20 and would not pull under 15lbs.



I keep my garage around 50 degrees and when I leave in the morning I am now seeing around 15 lbs and can pull the pressure down into single digits.



After sitting at work for the day and the truck is good and cold(in the teens) I am seeing more like 10 lbs at idle and I could easily pull the pressure guage to 0 if I laid in it hard. I have like a half hour ride home from work and it will get up in the 12-15lb range but i can still pull it down low if I get into the throttle.



I have my guage pickup inline between 2 micron filter and CP3.



Is this telling me to change the filter or is it just the cold trying to force the fuel thru the 2 micron filter? I had previously had the pressure guage on the stock filter and had never seen this type of differential in the winter months.



This is my first cold spell with the new 2 micron filter.



Thoughts anyone?



Thanks, jeff

 

[MFalkinham]

Jeff, I think what you're seeing is the effects of the cold weather on the new Ultra Low Sulfer Diesel fuel we are buying. Specifically, it's starting to gel in your filter(s) resulting in pressure issues. Lots of people are having gelling problems this year who never have in the past. My own Walbro has seen lots of pressure fluctuations during the recent cold snap. I believe mine was gelling in the pre-Walbro strainer filter I installed by the tank.

The solution? At this time, all we can do is run extra strong doses of anti-gel additive such as Power Service (white bottle). The standard dose doesn't seem to prevent gelling from starting completely. I've had to run double or even triple dose to keep my fuel pressures normal. There are a couple of threads in the General Diesel forum about this problem.

https://www.turbodieselregister.com/forums/showthread.php?t=176737&page=1&pp=40

 

[Jeff Knight]

I have a bottle of the PS 911. I've been using it with good results. My pressure is consistent with the cold weather. I have a strainer before the Walbro and I'm using the stock fuel filter. Jeff

 

[MFalkinham]

Jeff, if you're talking about the red bottle of PS 911, I wouldn't use that on a regular basis. It's designed for trucks that have already gelled up and contains mostly alcohol, which is extremely hard on the fuel injection system. The white bottles of Power Service are for consistant use to prevent gelling from happening.

 

[Jeff Knight]

According to the bottle it states for year round protection. It contains slickdiesel for lubrication using ULSD. I had it from a trip to Colorado. I don't plan to use it on a regular basis. Jeff

 

[SDeVries]

Walbro pump pressures

Does anyone know the running pressure of the walbro 392 pump?? I just received my new pump today and would like to know if I need to run a regulator or not. My only mods are 4 inch turbo back exhaust and a Diablo power puck... Any replies greatly appreciated. Scott (Harley Hauler)

 

[Jeff Knight]

Hey Scott, Mine idles at 16 psi. I can't pull it below 14 at any time. Thats with stage 2 injectors and a ADD. Hope thats what you are looking for. Jeff

 

[MFalkinham]

Scott, you will either have to use a regulator, or you have to fabricate an open bypass at the CP3 inlet/outlet. If you don't, the Walbro will build enough pressure to crack the plastic cover on the fuel filter canister. I went with an open 1/4" bypass and see pressures of 20-25psi after the OEM filter.

 

[SKing]

What do you guys think about wrapping or insulating the prepump strainer. Since it is metal non insulated I would think it might help out by wrapping it with some kind of insulation. Its just sitting there in the cold and like a pipe if you keep the cold air off it wont freeze. It makes since to me. I think the metal is acting like a cold conductor for the fuel thats in it. Never hurts for you guys in the cold areas to try it out.

 

[Jeff Knight]

SKing, I have my strainer mounted with 2 rubber coated clamps. I don't know if it helps but I haven't had any issues with gelled fuel.



Scott, If you buy the kit from Glacier Diesel Power it has a bypass in the kit that you can shim to get the pressures you would like.



Jeff

 

[JPereira]

Well I have the pressure back to 18 at idle and 15 under hard throttle. Of course it was the last filter i changed that got it back to normal. Changed the pre pump filter then the 2 micron and finally the stock filter. The stock filter I could tell was full as it was heavier than any other time I have changed it.



Questions for other using the GDP pump and 2 micron filter.



Should I bump my pressure up higher than the 18? maybe 25?



AFE, silicone torque tube, TST 4x4 and no kitty, [ Stock Turbo :-( ]



Are you still using the stock filter canister in the fuel line? I wanted to keep this in my fuel line for the heater purpose but am not sure if I would be better off just relying on the 2 micron filter. At least if I start loosing pressure I will know it is the 2 micron filter to change. Can/Should I just install the stock canister cover without a filter? Now I had to change both to find out what was wrong.



Presently I go from tank > filter > pump > bypass> stock canister > 2 micron filter > CP3.



What are others doing?



Thanks, Jeff

 

[steved]

I ran 25psi for a few months on my truck without any ill effects... you have a LOT of restrictions in that setup...



As for the OE canister... I would leave the filter in there since it is heated... that's not going to be your problem spot...



I am running the FASS setup, I basically run tank>FASS>CP3...



steved

 

[JPereira]

The OE canister was my problem this time. I changed the other 2 filters thinking it would be one of those and still had the problem. Changed the OE canister filter and I was back to normal pressures. The OE canister filter was clogged. All of these filters were installed new the day I put the pump and filter kit on the truck. 4 tanks of fuel had been put on the filters or about 3000 miles. Was it just a bad batch of fuel? Prior to this GDP kit I had been changing the stock filters around 10k.



Jeff

 

[CAT 385]

Hope you do not have any trouble with it. I had one and e-mailed Glacier last week and I am still waiting to hear from them.

 

[JPereira]

CAT 385?



What did you have trouble with GDP?



I have been very happy with my GDP kit and filter. I am just questioning having 3 filters in the loop. I just spent about $26 worth of filters and I am thinking all I had to change was the stock filter and I would have been back. There is just no easy way of knowing which filter is clogged without having pressure gauges before and after each of the filters. I was thinking if I leave the stock filter out of the canister I could still have my fuel heated but rely on the 2 micron as my only filter. If I loose pressure I will change the 2 micron and be back in the running. The 2 micron filter is cheaper and easier to change.

 

[LMcCary]

I am well pleased with my kit. The only thing I regret is not ordering the filter eliminator bracket. Good service and fair price.











2003 2500 4x4 quadcab 250 hp 5spd.

 

[steved]

The OE canister was my problem this time. I changed the other 2 filters thinking it would be one of those and still had the problem. Changed the OE canister filter and I was back to normal pressures. The OE canister filter was clogged. All of these filters were installed new the day I put the pump and filter kit on the truck. 4 tanks of fuel had been put on the filters or about 3000 miles. Was it just a bad batch of fuel? Prior to this GDP kit I had been changing the stock filters around 10k.



Jeff

So your saying a 7micron with a heater plugged before a 2micron filter without heat??



steved

 

[Dieselhed]

Wow. I would say you had some bad fuel. Have you filled up there before? It shouldn't be plugged after 3,000 miles. I have mine set up the same way you do (I think) and no problems after 5,000 miles.



Mine goes: Tank>Strainer>Pump>Stock Canister (w/7 mic filter)>2 mic filter>CP3



I have an in cab fuel pressure gauge tapped right in front of the CP3. It hasn't dropped below 18 psi unless at WOT, then I can get it down to 17 psi but it recovers quickly.

 

[CAT 385]

One of the fittings will not seal up, I tried pipe clamps with no success it seems to be the fitting itself. I am going to pull it all apart this morning and reinstalll to see if that fixes it.



I still have not heard from Glacier, but other than that, it was a snap to install and keeps a solid 16 psi!