LML Duramax FASS 165 Lift Pump Install Prevent CP4 Fuel Pump Failure!

[@jadengraves3378]

Yo Crown Racing Co., do you still have her after 2 years. Love some feedback ❤

[@puertoricanhammer6987]

Could you show the factory fuel filter block install?

[@Webedunn]

Love the pump but I did the CP3 change last year and the FASS 2 months ago but now I have a leak I can NOT find. I spent all last wknd tearing it apart. She runs like a Jessie in 36 but……

[@pooch7607]

I just ran across this video, I have a 2016 GMC 6.6 Duramax. Do you have to lower the fuel tank or anything to attach the hoses? Any other tips to make this any easier? This is a very good video, thanks for doing it.

[@CrownRacingCo]

No, I did not drop the fuel tank. Installing the lift pump, lines, and supporting electrical components is really easy. Follow the FASS install directions and it explains everything

[@russellfisher1514]

Did you run into any problems with that style return and using the factory suction line? The instructions for the 15.5 to 16 lml say to modify the sender module cause the factory suction straw is too restrictive. Thanks

[@CrownRacingCo]

I have had no issues with my lift pump and the way it's been installed. I recommend doing this mod.

[@kevinkiser9553]

Have you run into any issues with running out of fuel at 1/4 tank after installing?

[@CrownRacingCo]

No I have not. However, I always fill my truck up once it gets to 1/4 tank to prevent this issue

[@Blue_Collar_Hunter]

If you install a sump pump on the bottom of your tank it furth helps curb the 1/4 tank blues.

[@MGMCLL]

5:39 you kinda missed the best part there

[@amirsoliman198]

Bro why aren't you showing us the specifics like i want from a to z evything shown you just do stuff then show the results i want yo know how you do it. Not hate im just slow and i want to know

[@peteperkins3859]

Why not get the cp3 conversion instead?

[@cowpiecowboy7599]

1800 to 2000 kit plus 14 hours labor

[@wallheadkdir]

Which kit do you recommend for the 2016 duramax 6.6l?

[@CrownRacingCo]

Fass 165 or do the in tank sump kit.

[@davidroberts168]

I suggest an air dog lift pump 165

[@donbeard5498]

didvubtune truck after install

[@CrownRacingCo]

You do not need to tune your truck after a lift pump install. The high pressure pump has valves that control fuel pressure being delivered to the injectors. The lift pump will not affect this.

[@daveedwards1117]

NOT A STOP FOR CP4 FAILURES!!!

[@rite2beararms]

No, but it gives the CP4 it's best chance (along with additive every fill). The goal is and should always be swapping for CP3, but this usually buys some time.

[@brody7392]

@@rite2beararmswhat kind of additives? Just injector cleaner?

[@rite2beararms]

@brody7392 No, you need to add lubricity to the fuel. I use Hot Shots LX4. North American fuel does not have the lubricating properties that European fuel does and the CP4 does not hold up as well without it. I add 3oz for every 10gal.

[@CrownRacingCo]

Adding a fuel supply with positive pressure is substantially better for the cp4. I also use hot shot EDT

[@Webedunn]

It helps, a lot! The best remedy for a CP4 failure is putting in a CP3.

[@gunboom]

How about using the cheapest crimps and crimper known to man for the installation. WD-40 on phenolic resin manufactured parts is also a terrible idea.

[@CrownRacingCo]

You're right, however we got the job done and haven't had any issues yet. Sometimes you don't have access to all the right tools to get the job done and you have to improvise!

[@gunboom]

​@@CrownRacingCo Fair Enough...But you are a Racing Shop, and a lot of people rely on your expertise. I was a little floored watching the install.

[@scottcrowe9972]

Awesome job good video