Nordie's Injector Deal

« **on:** January 03, 2010, 03:42:41 PM »

Well here we go...just so everyone knows after doing this gig it turns out it is not the problem...truck is going to the diesel shop tomorrow for a real diagnostic, and i am going to kick some ass at the dealer for a wrong diag....so here we got

This is the beginning, and look at what i was seeing...the phots are all via cell phone so they arent the best

after removing, and finally getting a good look at the upper valve cover this is what i see when i got the upper valve cover removed....nothing to it once you get all the shit out of the way...what i did with all nuts and bolts was the use of sandwich bags, and a sharpie....any bolt that had a wire loom bracket was also labeled where it needed to go....ended up with no extra bolts thats a plus right?

after pulling the injector wiring harnesses i could now pull the lower valve cover to access get to the fuel rail, and injectors themselves...here are the injectors removed

Then everything was placed back together...we did each side one at a time, and took our time to do this, i am really hoping i didnt make it worse, but i dont think i did

here is some other shots for your viewing pleasure

« **Reply #1 on:** January 03, 2010, 04:24:27 PM »

What a job nordie what we say in the auto biz better you then me rib cage probibly sore laying in there like that for that long good luck with that dealer and finding the real problem

« **Reply #2 on:** January 03, 2010, 05:23:45 PM »

truck is lifted 4 inches

....so what we did was put the front of the truck on the lift, and pullet the tires, and then dropped it down till the rotors almost touched the floor it was still a pain in the ass because alot of work was done in the fenderwells, and on top of the hood....we used buckets to stand on, and when some antifreeze hit the floor the bucket would have a tendency to slide out and you would be placed on top of the fender....freaking unreal....there was alot of cussing going on, and i cant tell you how many wrenches i dropped that is where most of the cussing came along

« **Reply #3 on:** January 03, 2010, 05:47:03 PM »

How did the dealer diagnose bad injector/injectors? Did they do a cutout test or what?

« **Reply #4 on:** January 03, 2010, 05:52:01 PM »

They check balance rates

« **Reply #5 on:** January 03, 2010, 07:04:31 PM »

These newer diesels are animals amongst themselves, quite obviously!

There's a guy over on PB who wants to put one of those Duramax Diesels in a jet boat........good luck with that.......

Ray

What else could it be? Fuel pump? Clogged return line? This one is perplexing!

« **Reply #6 on:** January 03, 2010, 07:15:00 PM »

Quote from: IRRebel on January 03, 2010, 07:04:31 PM

These newer diesels are animals amongst themselves, quite obviously!

There's a guy over on PB who wants to put one of those Duramax Diesels in a jet boat........good luck with that.......

Ray

What else could it be? Fuel pump? Clogged return line? This one is perplexing!

Been done with a PSD...Twins no less

GT

« **Reply #7 on:** January 03, 2010, 08:08:47 PM »

Quote from: IRRebel on January 03, 2010, 07:04:31 PM

Fuel pump? Clogged return line?

That was my thought from the start

« **Reply #8 on:** January 03, 2010, 08:15:44 PM »

Hope it aint the fuel pump that bitch is expensive....there's two of them, and im not short on fuel...truck is super rich which leads me to believe fuel pressure regulator

« **Reply #9 on:** January 03, 2010, 08:21:57 PM »

Quote from: Nordie on January 03, 2010, 08:15:44 PM

Hope it aint the fuel pump that bitch is expensive....there's two of them, and im not short on fuel...truck is super rich which leads me to believe fuel pressure regulator

Diesels can't really run "rich", they either run or don't run, the air is a constant, the fuel makes the engine accellerate, if it smokes like a gas deal (black) that either means air in the system or bad spray pattern from one or more injectors....(among others)

Does your truck have a Cat on it? Those do get plugged up, easy to verify by pulling it.....

edit;, if the pulse width is modifed (read tuner) you can have too much fuel being delivered which I guess could be thought of as rich, if too high, the heat from the added fuel could melt stuff down really easy, do you have any idea what your exhaust temps are when running hard? Over about 1000*F can start to get expensive.

GT

« **Reply #10 on:** January 03, 2010, 08:53:25 PM »

basically truck at start-up i get a puff of white smoke, and the motor vibrates and shakes more then it used to...chevy diaged it as injectors or they were ready, but not completely meaning this is why my truck will still run...however at start-up i can be 100 feet from my truck and smell diesel...meaning there is some serious raw diesel coming out of the exhaust never smelled like that before....now the vibration goes completely away after 1800 rpms and runs like it always does...fuel economy effing sucks....here is my philosophy now that the injectors are done....i believe it to be the fuel pressure regulator that is electronically controlled is sending wrong signals at idle and lower rpms, cause truck still runs like a raped ape...my truck hardly makes any black smoke, and i do get white smoke at cold start ups....it is a mystery which will be solved soon enough...also i dont believe it to be rotating assembly or bent rod because....the shake would progressively get worse...also the truck does the same in park or neutral so i know it is the motor....this has me

for almost a month now, and i miss my truck

« **Reply #11 on:** January 03, 2010, 08:59:19 PM »

Quote from: Nordie on January 03, 2010, 08:53:25 PM

basically truck at start-up i get a puff of white smoke, and the motor vibrates and shakes more then it used to...chevy diaged it as injectors or they were ready, but not completely meaning this is why my truck will still run...however at start-up i can be 100 feet from my truck and smell diesel...meaning there is some serious raw diesel coming out of the exhaust never smelled like that before....now the vibration goes completely away after 1800 rpms and runs like it always does...fuel economy effing sucks....here is my philosophy now that the injectors are done....i believe it to be the fuel pressure regulator that is electronically controlled is sending wrong signals at idle and lower rpms, cause truck still runs like a raped ape...my truck hardly makes any black smoke, and i do get white smoke at cold start ups....it is a mystery which will be solved soon enough...also i dont believe it to be rotating assembly or bent rod because....the shake would progressively get worse...also the truck does the same in park or neutral so i know it is the motor....this has me for almost a month now, and i miss my truck

Maybe,
the white smoke as you probably already know means either water being combusted or crankcase oil being burned off...This will sound retarded, but have you checked the fuel for excess water? Sometimes the water sensors don't work, also have you put fuel filters in it?

GT

« **Reply #12 on:** January 04, 2010, 01:28:07 PM »

Quote from: GT Jets on January 03, 2010, 08:59:19 PM

Maybe,
the white smoke as you probably already know means either water being combusted or crankcase oil being burned off...This will sound retarded, but have you checked the fuel for excess water? Sometimes the water sensors don't work, also have you put fuel filters in it?

GT

water yes

« **Reply #13 on:** January 04, 2010, 05:48:21 PM »

oil was checked for water and nothing....the resovoir was about a little low, but the motor was warm....fuel filter replacement showed some water to be in the fuel but we are talking drops here...this is why there is a seperator for diesels it did its job...new fuel filter, and new tank of fuel = same problem....i know the problem is with fuel....oil level was high with 3k on the oil...i run 5k per oil change....the white smoke at initial start-up does point to a fuel issue....least online research has come to tell me...talked to a diesel shop today and have an appointment tomorrow...i wont find out till wednesday...may the suspense kill me....definately no water in oil...however fresh oil has a wonderful aroma of diesel fuel...here are my thoughts the motor is shaking at low rpm's because it is over fueling the motor when the motor gets up in rpm's it is running where it should be and it runs fine....the motor still has gobbs of power as well...so i know im not down any cylinders....in frustration i power braked it and made a nice 100 + foot long plus patch....wish the damn thing would throw a lite....diesel specialist here i come...shop....what's funny is i used diesel forums to get answers, and have gotten more feedback from a boat site....go figure...

love you guys!

really i would like to thank everyone for the phone calls, and pms, and favors you guys are a great bunch....

« **Reply #14 on:** January 04, 2010, 07:52:57 PM »

Hey Josh I think I got it figured out.....

Wait...........

The DIZZY is at the wrong end

« **Reply #15 on:** January 04, 2010, 08:59:48 PM »

What dizzy? They don't even have intake valves?

« **Reply #16 on:** January 04, 2010, 09:05:35 PM »

Quote from: Nordie on January 04, 2010, 08:59:48 PM

What dizzy? They don't even have intake valves?

Don't you mean throttle butterflies?...

« **Reply #17 on:** January 04, 2010, 09:43:37 PM »

throttle cable whats that?

« **Reply #18 on:** January 05, 2010, 11:56:41 AM »

the white smoke is normally oil burning like the heads are dripping oil into the cylinders and puffing white smoke at start up, it goes away because there isnt enough time to let the oild pool back in to the cylinders. The more black smoke when your on the throttle the better, that means the motor is making serious power. I would check all the glow plugs in the motor, because if you have raw fuel its not always to much fuel. a diesel has so much compression in the motor that you can run on a dead hole or two and that is where the vibration is coming from. once you get the rpms up im the motor the fuel starts to light itself with out the use of the glow plug. your MPG will go right in the shit can if you are only running on 8 holes 75% of the time and the other 25% of the motor is just dead weight. i know thats a little comfussing but, my diesel gets about 25 MPG its a 7.3 with a chip and some turbo work and still makes about 450 to 500 hp. Nordie you have my number call if you want me to go into some detail

The Beav

« **Reply #19 on:** January 05, 2010, 12:02:46 PM »

Thanks for the advise beav....when injectors were put in 8 new glow plugs were also put in....these damn duramax's aren't normal they seem to be different don't know what it is....when I drop it off at the shop I'm going to have them run a compression test....the glow plugs really are just for start-up so with the motor warmed up vibration should go away....not with my motor....I really think fuel economy....on the 34" tires running 70 I get 22mpg....now I probably get 9! Will get my answer soon enough....I think it is so simple a cave-man could do it....just not nordie

« **Reply #20 on:** January 05, 2010, 06:04:23 PM »

well they have figured out the problem with my truck....took them an hour

they said due to the motor being off balance it was messing up the fuel economy...he also said i did a bang-up job on the injector install!

« **Reply #21 on:** January 05, 2010, 06:11:23 PM »

Did they get the pin out of the crank for you?

« **Reply #22 on:** January 05, 2010, 06:14:42 PM »

they are going to make a stab at it first thing in the morning....he's sure that he will get it out, but not tooo sure if there will be any crank damage....cool thing about diesels....crank's are generally tool steel....least i was told that

« **Reply #23 on:** January 05, 2010, 06:23:30 PM »

Glad to hear they found it! Seems weird though.

My understanding was the same thing on most diesel cranks!

Ray

« **Reply #24 on:** January 05, 2010, 06:34:20 PM »

yeah if the crank is messed....then i am going after centennial gmc, because they did my water pump about 30K ago....and im guessing they forgot to torque the bolt....because they said that it was only hand tight

Nordie

honda1

Nordie

bbfsouthwind

Nordie

IRRebel

GT Jets

Luckie Stiff

Nordie

GT Jets

Nordie

GT Jets

RTriebess

Nordie

76NORDIC

Nordie

GT Jets

Nordie

Beaveretriever

Nordie

Nordie

Luckie Stiff

Nordie

IRRebel

Nordie