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Discussion Starter · #1 ·
06 3500 srw with 120k on it. On vacation with the family. Towed the camper (~10k fully packed) out to VA beach. Truck did fantastic on trip out. This week have had a couple instances where the truck was hard to start....it would crank and almost start and then I'd have to turn key again and it'd fire fire up. Exhaust sounded funny (like a slight knock) to me once but after popping the hood it sounded normal under the hood running and exhaust has sounded normal since. I dumped some Lucas in the tank yesterday and truck has ran fine since. I'm worried about an injector and I'm a long way from home....need to tow 6 hours or so back to PA Saturday where I leave the camper during the summer then another 4 back to Ohio. Not sure what I should do. Any advice?
 

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I wouldn’t have put Lucas in there. It only hurts. Has less lubricant than regular diesel.
Any excess smoke or increased oil level?
 

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Discussion Starter · #3 ·
I wouldn’t have put Lucas in there. It only hurts. Has less lubricant than regular diesel.
Any excess smoke or increased oil level?
No smoke and checked oil today and it was where it should be. Did a change with filter and fuel filter right before I left. Hate to hear the Lucas was a bad idea. I was just thinking to clean/lubricate those injectors.

I'm not 100% convinced it is an injector. Just kinda seems like the first place that makes sense. I suppose it could be the lift pump but probably would suspect injectors first at my mileage. My efilive and hptuner are at home so it's not like I can properly even log the thing. I only have a bluedriver and an older actron 9180 with me. Also have limited tools although I do have a tool set. Just can't travel with everything. Not a ton I can do really since we're leaving in 3 days. Cross my fingers and pray alot between now and then I guess.
 

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In my opinion, atf is about the best injector cleaner around . Along with some 2 cycle oil. Try a quart of aft and some 2 cycle oil. I use the once ounce for every gallon method some people do 1/2 ounce .


That’s what bad injectors sound like. That’s my dads truck, It felt like it was running on 5 cylinders. After it warmed up a bit it was fine .

It also made a lot of black smoke even hazing as it went down the road, and would take longer then normal to start especially hot starting .


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Discussion Starter · #6 ·
I would go back and check here.
I did look over the filter housing and the drain hose to see if either was maybe leaking a bit and found nothing out of the ordinary. Thanks for all the replies and advice. Wife drove truck today and said it started and ran fine. It's more of an intermittent type thing. Just kills me that I'm so far from home and going to work the truck towing to get back home....it's honestly my worst nightmare. I spend months on my truck making sure these things don't happen and yet here I am. Right before this trip I did u joints and driveshaft support bearing/bushing and even threw new pads/rotors just trying to eliminate any issues.
 

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...it's honestly my worst nightmare. I spend months on my truck making sure these things don't happen and yet here I am...
Embrace it. It's the 3rd gen lifestyle. Every time I get something nice for my truck, a totally unrelated issue pops up. With used truck prices right now, I'm tempted to sell and hold out until the vehicle market crashes.
 

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Discussion Starter · #8 ·
So the next logical question would be if I make it back home and test these injectors and need new ones which ones do I look to get? BBI I've read good things about. After that I'm kinda clueless but I really haven't put the work in yet to figure that out....right now I'm just focused on getting the truck home.
 

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I’m replacing mine with BBI’s VERY soon. I can’t justify any other injector brand.

Hope you make it man. I’m a native buckeye myself. Southernmost part.
 

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You can also try this to clean out the injectors. I’ve done this to dads truck and mine with no ill effects.

Pull the fuel filter out and clean the fuel bow out real good with brake clean. Then put the filter back in and fill it with aft . Then start the truck let it run maybe 30 seconds or so just long enough to get the aft into the injectors and shut it off and let it set awhile . Technically since you just changed you filter you could just pop the top off and fill the bowl . The idea is to get a heavy dose of aft into the system to clean it out . Shop that does my trans work told me to do that and it seems to work.


I just did this to my filters on my air dog the other day . What what I’ve noticed is the truck runs way smoother . Also seems to have fixed the annoying rail pressure bouncing I’ve been dealing with .


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check air filter?
check good batteries and connections?
Should change fuel filter ASAP, should be running PF7977 baldwin as a minimum, 5 micron , in stock filter housing ,
Unless last resort, I would never put anything straight in fuel filter that is not filtered diesel .
Any additives should be put thru fuel tank so they are dispersed and filtered properly .

As far as injectors , some people are lucky but really injectors are pretty delicate part that require specialized tools to repair.
Stock truck, new Bosch injectors, more HP planned BBI are best, new connector tubes.
Plan on keeping truck should also invest in better fuel filtering with bigger water separator, stock water separation is easily overwhelmed
 

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BMS ,Injectors are NOT OEM Nozzles, Overseas sellers fair no better .DO NOT BELIVE THE CHEARLEADERS.

ORION ,just buy some JD either for emergency NO start when on your vacation.

Your choices are Injectors , LV, Pump in that order.... Its extremely rare for CP3 to cause no start/long crank 5.9 . 6.7 yes the Suction valves in 5.9 rarely fail , the 6.7 Suction valve do fail (Actually they get burn up)

The 3 to right bad, 3 to left good.

JZimm Core Pump (1).JPG
 

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I would do the ATF (dex III/merc) in the filter housing, fire it up, let it run for a minute then let it sit overnight. Then burn off as much of the fuel in the tank as you can and re-fill, then add the ATF/2SO mix.

Keeping the internals clean will go a long way for longevity... I still have the TC Diesel rebuilt CP3 in there and it continues to serve me well (280k or so on it), injectors 135k since install (spent their life on the mix) & will continue to get the mix to the end.
 

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Discussion Starter · #14 ·
Just wanted to update the thread. Truck ran flawless and made it back home today. Towed camper 7 hours to PA the first leg, stayed a couple days there, then drove 4.5 hours unloaded back to Ohio. I'm going to get on trying to identify my issue this week. I cleaned those injectors but first start of the day I've also been cycling the key twice in case it's a weak lift pump. Hasn't hard started a single time since doing those 2 things. Now that I'm home I'll stop cycling the key and I'll do a return test on the injectors. Just have to start rulinng things out until I find it.
 
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