2003 hd duramax...????

[2FORCEFULL]

whats the must do's and don'ts...4'' turbo back???

 

[Bigbore500r]

Make sure the injectors and fuel lines are good.....LB7 were great setups but plagued by injector failure, and they are the only model duramax motors that did not isolate the injectors from the engine oil. When they fail they fill the crank case with diesel fuel. Supposedly The injectors fail because the inside of the fuel lines / rails start flaking apart and send metal into them. Not sure if that’s the only reason but that’s what I’ve heard.

 

[Flying_Lavey]

My dad had one that went 190k trouble free miles. I believe the only 2 things he had to replace on that truck besides oil and tires was a water pump and crank shaft position sensor. Both after about 150k miles. He replaced the intake and charge air tubing i believe with 1 from a LBZ if I'm recalling correctly. Dropped his engine temps,a lot (not,his EGT's. He didnt have a pyrometer in ir).

Sent from my LM-G710VM using Tapatalk

 

[2FORCEFULL]

Make sure the injectors and fuel lines are good.....LB7 were great setups but plagued by injector failure, and they are the only model duramax motors that did not isolate the injectors from the engine oil. When they fail they fill the crank case with diesel fuel. Supposedly The injectors fail because the inside of the fuel lines / rails start flaking apart and send metal into them. Not sure if that’s the only reason but that’s what I’ve heard.

Thanks, I had my mechanic check it out before I bought it,he said about the same thing... first thing he checked was the oil dip stick... then also told me that some one had just changed the injectors and water pump... also said it should be done every 100k...I gonna do some exhaust today...probley a 4'' turbo back system..truck really seems tight and runs real well..every one will just laugh when I say what happened right after I bought this truck...so I'll just save the story.... but my fortune sure causes me misfortune...shits multiplying like rabbits at my home 20....fuuuuuuk, can't win...

 

[Runs2rch]

4 inch turbo back is perfect. I ran Flo pro on mine. Threw a water pump in at 115k. Also a quart of two stroke every tank as well s an ounce of XDP's additive.

 

[Joe mama]

What's the 2 stroke oil do?

4 inch turbo back is perfect. I ran Flo pro on mine. Threw a water pump in at 115k. Also a quart of two stroke every tank as well s an ounce of XDP's additive.

 

[nordic454]

4” turbo back, and an EFI live tuner. Best in the market, my ‘08 LMM is a goddamn rocket after I did it. Will light the 35” tires up at 20mph, and with the different settings, is awesome to tow. I went with Jamo Exhaust, they are local here in town, 100% stainless, and not overly expensive

 

[Runs2rch]

What's the 2 stroke oil do?

Adds lubricity back into the fuel. Pre 06 motors were designed for low sulfur diesel, not ultra low. The dry fuel destroys the CP3 and injectors.

 

[spectra3279]

What's the 2 stroke oil do?

Lubricates the injector pump and injectors. Uls diesel does not lubricate without the sulfur

Sent from my SM-G900T using Tapatalk

 

[Joe mama]

Well that explains the injector replacements.

 

[COCA COLA COWBOY]

Best start...LB7 Cat Fuel Filter Adapter and filters.

https://www.atptrucks.com/products?keyword=lb7 filter cat&mainc=

 

[Blackmagic94]

Shit year because of problems with injection. Run for the Hills.

 

[DLow]

Shit year because of problems with injection. Run for the Hills.

I totally disagree. If his just had the injectors replaced like he was told, that thing will be good for a long, long time. New style injectors are solid. Oil in the fuel as mentioned above and good to go.

The bad injectors don’t blow the engine up. It will run and idle like crap until you replace them. It’s a failure that is a pain, but won’t typically leave you stranded unless you aren’t paying attention for a couple weeks.

 

[Your ad here]

Hey 2ff whats the story after you bought it? Did you fill it with gas?

 

[2FORCEFULL]

you guys wouldn't even believe what I did....stopped by ram and bought a new truck....lol

 

[2FORCEFULL]

Hey 2ff whats the story after you bought it? Did you fill it with gas?

what made you say that???

 

[JDub24]

Oh do tell...

you guys wouldn't even believe what I did....stopped by ram and bought a new truck....lol

 

[scottchbrite]

I totally disagree. If his just had the injectors replaced like he was told, that thing will be good for a long, long time. New style injectors are solid. Oil in the fuel as mentioned above and good to go.

The bad injectors don’t blow the engine up. It will run and idle like crap until you replace them. It’s a failure that is a pain, but won’t typically leave you stranded unless you aren’t paying attention for a couple weeks.

And smoke like a mofo at idle.
I’ve done my injectors 1.5 times — complete replacement once and replaced 3 that were leaking on the same bank several years ago. They’re due for another overhaul again at 175k on my 03. I’m gonna park the damn thing and use it as a work truck around the property instead of spending more money on it.

 

[JB in so cal]

you guys wouldn't even believe what I did....stopped by ram and bought a new truck....lol

Dear diary....oh never mind... Lol

 

[TPC]

GM Duramax trucks are like outboard motors in that they really hold their value if kept in reasonable good condition.

 

[Runs2rch]

you guys wouldn't even believe what I did....stopped by ram and bought a new truck....lol

Let's see it!

 

[2FORCEFULL]

Let's see it!

so I stopped by the ram store... just to look at the blue rams that match sues boat...they have them 15k off window sticker… so I call sue...she comes over and buys the matching blue big horn ram...pretty cool truck.....we just got back from havasu, camera battery's dead....I'll take a pic soon as it 's done charging...

 

[2FORCEFULL]

so,... I towed that heavy ass chapparal to havasu,... got the cheetah and towed it back with the duramax...don't know if this really makes a difference... but the Duramax is a clean one owner truck... it doesn't smoke at idle, or going down the road... stays right between 200-210 all the time... and the trans temp never goes over 200...it doesn't do any weird stuff...runs and drives as it should...pulled both boats with out a struggle...I got some fuel additive at the truck stop when I filled up...but I for got what kind to get so I got the stuff that had the best story on the bottle....

 

[Bigbore500r]

so I stopped by the ram store... just to look at the blue rams that match sues boat...they have them 15k off window sticker… so I call sue...she comes over and buys the matching blue big horn ram...pretty cool truck.....we just got back from havasu, camera battery's dead....I'll take a pic soon as it 's done charging...

Wait - had to check the post date on this thread twice....
You bought a new blue ram to match Sue’s boat like 2 years ago, and sold it.....
Groundhog Day!

 

[2FORCEFULL]

Let's see it!

 

[JB in so cal]

Smack head emoji lol

 

[2FORCEFULL]

so now we have 4 trucks...3 are getting sold tomorrow..that and the chapparal is sold... so back to just the ram and the cheetah.....lol..we were ready to trade in the vegas rv yesterday on a diesel pusher...we were coming across the desert and there was a big cross wind... what happened was the bathroom roof vent was wide open and the wind was blowing hot air in the rv... couldn't get it any cooler than 100 degrees... the look my wife was giving me when the fan kicked in and it dropped 2 gears was priceless..

 

[JB in so cal]

Awesome! Keep doing what you're doing!!

 

[Runs2rch]

so now we have 4 trucks...3 are getting sold tomorrow..that and the chapparal is sold... so back to just the ram and the cheetah.....lol..we were ready to trade in the vegas rv yesterday on a diesel pusher...we were coming across the desert and there was a big cross wind... what happened was the bathroom roof vent was wide open and the wind was blowing hot air in the rv... couldn't get it any cooler than 100 degrees... the look my wife was giving me when the fan kicked in and it dropped 2 gears was priceless..

That's a bummer. Issue with the vent? That ram is a 5.7 right?

 

[COCA COLA COWBOY]

Gorgeous truck! I've always been a Chevy fan, but my Ram has really impressed me!

 

[Xring01]

Dodge makes a Solid Truck now...
Back 15-20 years ago, not so much,,, but today they are good trucks, both gas and deisel.

My neighbor put close to 400,000 miles on Hemi 1500, sold it for $2500 and was still running good.. Burned some oil, but passed smog.. I would say he got his $$$ worth...