Community Forums

WagonMaster · 01-05-2020, 10:51 AM

Many people recommend just removing the factory fuel filter if using a FASS setup. They make a kit to block off where the old fuel filter was.

Kraken · 01-06-2020, 08:56 AM

Quote:

Originally Posted by DucBill

Karmen your welcome, also you might want to read up on the fuel filter comparison test on the Duramax forum done by AlisoBob titled The D-Max 2019 Filter Shootout... PT 2 !
Very interesting results.

Thanks Duc, that new Wix filter I put on it is gonna come right off now. Looks like the genuine AC Delco is the way to go. I also see some guys get the Fass setup, but use Cat 2 micron filters. Anybody do that ?

grindstone01 · 01-06-2020, 06:29 PM

Quote:

Originally Posted by Kraken

Thanks Duc, that new Wix filter I put on it is gonna come right off now. Looks like the genuine AC Delco is the way to go. I also see some guys get the Fass setup, but use Cat 2 micron filters. Anybody do that ?

Maybe somebody knows better, but I was informed that WIX supplied the Delco filter and other than the box, the WIX filter is made on the same process line with the same specs. If you go with a lower micron filter, you may have injector pump issues.
You can spend $$ upgrading the filter and add a pump, but GM engineers knew what they were doing and the Duramax was built for 17 years before a pump was added and they have a solid history backing the design. As a retired auto engineer, just becareful when you begin to re-engineer a system, like a motor. Alot of testing went into that (any) motor and changes may have negative impacts later on.

Kraken · 01-06-2020, 10:57 PM

Quote:

Originally Posted by grindstone01

Maybe somebody knows better, but I was informed that WIX supplied the Delco filter and other than the box, the WIX filter is made on the same process line with the same specs. If you go with a lower micron filter, you may have injector pump issues.
You can spend $$ upgrading the filter and add a pump, but GM engineers knew what they were doing and the Duramax was built for 17 years before a pump was added and they have a solid history backing the design. As a retired auto engineer, just becareful when you begin to re-engineer a system, like a motor. Alot of testing went into that (any) motor and changes may have negative impacts later on.

Thank you Grind. I read that the Ford diesel uses the same CP4 pump, but it experiences far fewer failures because it has a lift pump and the Duramax does not. So I went ahead and ordered the Fass today with the high performace heating element. Yea it was a lot of money,but I'm going to keep this diesel and want the best for it. The Fass puts out 10 psi of pressure which I think should be a positive thing, but like you say, I'm not an engineer,

WagonMaster · 01-08-2020, 08:58 AM

Yes, it's a lot of money but it appears to be very well built. I got the FASS 95 because I'm not going to hop it up. Very quiet. I feel better about the CP4. I've got 135,000 miles on mine and it purrs like a kitten. Just had to replace the number one glow plug. Easy job. These engines should go for several hundreds of thousands of miles. I'm keeping mine until it falls apart.

redhooker · 01-29-2020, 12:31 PM

Quote:

Originally Posted by Kraken

Now that I'm getting up to speed on these issue's, I'm going to do the Fass pump filter setup too. I almost ordered it on Amazon, but some buyer warned that Fass will not warrant any system bought on Amazon.

The new lift pumps from Fleece performance are the best option out. They install in the factory pickup hole in about 10 minutes. No sump required and pulls fuel to the bottom of the tank. Lifetime warranty. A fantastic improvement over the Fass and Air dogs. Do yourself a favor and check them out for yourself.

WagonMaster · 01-29-2020, 04:05 PM

Quote:

Originally Posted by redhooker

The new lift pumps from Fleece performance are the best option out. They install in the factory pickup hole in about 10 minutes. No sump required and pulls fuel to the bottom of the tank. Lifetime warranty. A fantastic improvement over the Fass and Air dogs. Do yourself a favor and check them out for yourself.

Wow, you disconnected the driveline and dropped the tank in 10 minutes? You're the man!

redhooker · 01-29-2020, 06:20 PM

Quote:

Originally Posted by WagonMaster

Wow, you disconnected the driveline and dropped the tank in 10 minutes? You're the man!

Yes- I am the man!

I assume that others here are men too, and understood what I was describing.

I will add the following disclaimer for the ladies.

I can drop the tank in about 10. But installing a Fass or Airdog can take up to a few hours, especially if installing a sump. Mounting brackets and repositioning fuel lines ect.

The Fleece unit just drops in and connect the factory line. Connect power and done. No frothing of your fuel and no 1/4 tank needed. It is truly a step beyond in design.

Also I will add I consider the CP4 like a timing belt-swap by 150k or risk catastrophe. You can replace a working CP4 for about $1900. If it fails it will be about $9000. For those that are bothered by its limitations about $4800 will get you converted to a CP3.

grindstone01 · 01-29-2020, 07:29 PM

There seem to be alot of wild claims and paranoid concerns on this post. Is everyone taking their medicine as prescribed?

redhooker · 01-30-2020, 04:20 PM

I was joking a bit as I assumed wagonmaster was as well. Inflection is lacking in the written word and I guess can come across as less than good natured-I can assure you it was.

The info on the pump is 100% accurate though.

WagonMaster · 02-04-2020, 07:12 AM

Quote:

Originally Posted by redhooker

I was joking a bit as I assumed wagonmaster was as well. Inflection is lacking in the written word and I guess can come across as less than good natured-I can assure you it was.

The info on the pump is 100% accurate though.

Of Course I was joking around. This is a good place to start your trip down the trail of due diligence. Education and investigation will get you the best option for your situation and mechanical abilities. I think we can agree that a lift pump might be a good thing to consider.

carl2591 · 02-06-2020, 03:35 PM

that is funny in a way and i understand your point.. but you might want to ask all the people that bought the ford 6.0L engine truck in 2003 till 2005.. what a disaster for all..

SO with that said and currently having a '03 7.3L and looking to upgrade in a couple year have been leaning between the GMC duramax or the Ram Cummings engine.

In doing some looking around it appears the cummins is king but the non aisen transmission is the issue with them and on the GMC/chev side injectors and DEF issues.. so who fricken know what is a good one..

Quote:

Originally Posted by grindstone01

Maybe somebody knows better, but I was informed that WIX supplied the Delco filter and other than the box, the WIX filter is made on the same process line with the same specs. If you go with a lower micron filter, you may have injector pump issues.
You can spend $$ upgrading the filter and add a pump, but GM engineers knew what they were doing and the Duramax was built for 17 years before a pump was added and they have a solid history backing the design. As a retired auto engineer, just becareful when you begin to re-engineer a system, like a motor. Alot of testing went into that (any) motor and changes may have negative impacts later on.

grindstone01 · 02-07-2020, 06:10 PM

Quote:

Originally Posted by carl2591

that is funny in a way and i understand your point.. but you might want to ask all the people that bought the ford 6.0L engine truck in 2003 till 2005.. what a disaster for all..

SO with that said and currently having a '03 7.3L and looking to upgrade in a couple year have been leaning between the GMC duramax or the Ram Cummings engine.

In doing some looking around it appears the cummins is king but the non aisen transmission is the issue with them and on the GMC/chev side injectors and DEF issues.. so who fricken know what is a good one..

If you are looking for a perfect truck, it will be a long search. None exist that I am aware of and if it did exist it would not be affordable. I don't believe the claim that every 7.3L from 03 to 05 were all disaster's, this where emotion is overriding logic and you can't debate emotion!

NevadaNick · 02-08-2020, 07:31 AM

I had a 6.0 Ford and it was one of the best trucks i ever owned. A sensor went bad and was replaced twice in the 100k miles i drove it. I had 2-7.3 Fords that stranded me. When buying a vehicle you roll the dice to see if you got a winner or loser.