How To Install a LBZ/LMM Duramax Fuel Injection Pump 

Could you tell me how you got the top y bridge bolt out

Thanks for this tip. On 2006 classic LBZ, I was able to remove the y bridge and remove the pump without removing the coolant crossover or thermostat housing. The top rear passenger bolt was tight on the turbo but with a combination of stubby wrenches and thin wrenches I was able to get it. Once it was loose I used a pick on the bottom of the bolt and tip of finger on top to spin it out. The others were removed with a 1/4" snap on short swivel. The passenger side alternator bracket needed to come loose and forward a bit to get one of the pump bolts with a wrench. The y bridge was a little tedious but worth the time savings for me.

Short 10mm ratcheting box wrench

@@larsmoservice588 LBZ bridge is a cake walk compared to LMM. SI states removal of transmission and turbo to gain access to rear bridge bolts. This shortcuts all of that...

Thank you for watching and subscribing to our channel. We recommend to first check how much metal you have. email us or post a picture of your pump fuel pressure regulator so we can better help you... or call us at 435-628-5544 and ask for Fabian... Is your truck a LMM or LML ?

2009 with 105k cost $11,700 last year. Just had same problem on 2012 with 123k yesterday and dealer quote was $9,700.

@@HumpDaddy01 I was literally talking to my guy about mine today and learned I had a cp3 and he said the new cp4 conversion to the cp3 costs about 4 grand and when the cp4 eats itself it does cost 10,000 to fix it

@@JohnJohn-sn5cd yea it sucks! Bad!

Lml CP4 pump is about $10k-$12k job to replace the pump, rails, feed pipes, return system, HC injector, and 8 injectors. Just got finished with one

I can't even remember writing this it was so long ago. Anyway my LB7 has a CP3 pump which is still good. Turned out my issue was injectors and had them replaced by a local reputable diesel shop. 6 grand for parts and labor. Being I only paid 12,500 for the 2001 chevy 3500 dually in 2016 adding on 6 grand is nothing on what used trucks go for now. I decided to have the shop do it since they give a warranty on their work for parts and labor. Just so happens the lead mechanic also has a 2002 duramax and first thing he did when he bought it was change out the injectors. He said they are the best diesel trucks out there so he bought one👍

No

There are no timing mark as the fuel injectors are computer controlled.

Why aren't there any videos about how to install a inline electric fuel pump on a 01 6.6l duramax diesel lb7.

Ta Talk to me or send videos please.

I also have the exact same question I have a 2001 Chevy Duramax LB7 6.6 with a high pressure pump that I had replaced but the mechanic told me the pump didn't need to be synchronized...but it still hasn't been able to start without spraying starter fluid & then run longer than 10 minutes without dying out on me. I hate it because I am a "woman" this so called "mechanic" wants to talk down to me like I'm a child! He's now telling me that the custom made fuel lines I had made for it aren't the exact size that it needs and it is causing air in the lines which was causing it to die out but the fuel lines where exact replicas of the original ones. We already changed the FICM, glow plugs, FPR, new oil pump, then we cleaned the fuel injectors, & the fuel pump housing we replaced all new gaskets, and cleaned the fuel tank completely as well as replacing this high pressure fuel pump and it still won't run longer than 10 mins....I love my truck but it's sending me to the poor house! (literally I had to take out 2 payday loans to get some of this work done) I am desperate to get this truck up and running again! I would really appreciate if you would let me know if the pump was supposed to be synchronized when installing the new one? Thanks in Advance!

Rhondavas1977, I know this is a three year old post but how’d your predicament turn out?

Rhondavas1977 sounds like some sort of security system shit down if it’s 10 minutes exact. I am also curious on what ended up being the fix. Also it does not need timed since it’s common rail.

52 lbs

no

Thank you for your comments, sound like you may have some troubles with your vehicle, if you do? please call us at 435-668-6942 or email sales@toxicdiesel.com Toxic Diesel Team: Fabian

This is a common rail system. There are not timing mark, the pump just need to rotate to create pressure. Injectors are electronically controlled.

What is the fpr for, mine cranks no start, it's a chevy express duramax. Thanks.

@@morisventura674 most likely yours isn’t starting because the fuel filter housing isn’t holding prime or it’s might be leaking, above the fuel filter there’s a big button you can press and prime it, keep pressing it until it gets really hard then try starting it.

@@morisventura674 there’s also a small screw you can open to bleed any air bubbles