5.9 Cummins plugged/dirty injector
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5.9 Cummins plugged/dirty injector

  1. #1
    Senior Member vdrivenman's Avatar
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    Default 5.9 Cummins plugged/dirty injector

    have a 2003 dodge dually w 5.9 ho cummins.auto trans . truck has 85,000 easy miles on it.sits for weeks at a time w/o being driven.is now emitting white smoke on idle and smells like raw fuel.thinking plugged or dirty injector. any recommends for an additive or cleaner to use and how(like driving it wot or idling). also has hard wired edge juicer programmer w kn filter & no muffler or cat converter!

    cleaned and serviced the air filter yesterday and has a full tank of fuel.

    thanks !

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    Senior Member STV_Keith's Avatar
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    White smoke is unburnt fuel. Could be low rail pressure, but you'd need a scan tool to see what the commanded and actual rail pressure is. Could be a stuck or leaking injector too. With the scan tool, you can do a cylinder contribution test that will at least tell you which injector/cylinder it is. Does it idle rough?
    Keith-


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    Scarab 22 cbrahs's Avatar
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    cummins recommends using CRC injector cleaner. have seen it work too. i have been around cummins for a long time and worked for chrysler and still have contacts at tech dept in both crysler and cummins. stuck injector will never throw a check engine light but a faulty solenoid will. get some CRC and run it. concentrated and treats 125 gallons but super dose it. also change fuel filter and keep doing filter changes every 15k miles..
    boat- 95 Scarab 22, 496 stroker, Merlin heads, lots of fun

    Tow Rig- 2011 Dodge 3500 CC Laramie, FASS pump, 160 total gallons of fuel, H&S MCC Terror Custom Tuning, Autometer, Sinister, 5" Stainless Flo Pro TB, S&B, B&W, Ravelco, Pro-Tech, B&W Companion, Pac Brake bags, 19.5 Vision's, now a dually pulling a 36 foot Cyclone and living in it full time

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  6. #4
    Senior Member vdrivenman's Avatar
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    Default 5.9

    hi guys,

    thanks for the input. no rough idle,runs & performs fine.is the crc cleaner available at most parts houses like auto zone or o reilly's? should i change the filter before or after running the cleaner through it?

    this has /is a great truck engine combo. the tuner has 4 positions on it. should i run it at the max hp position or leave it in the eco position.

    thanks

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    Scarab 22 cbrahs's Avatar
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    what tuner are you running? if its edge, get rid of it. edge runs WAY too hot on the dodge trucks. don't get the fuel filter at the local parts store either. if you have access to a cummins dealer go buy parts there. they will need the serial number on the engine which is located on the valve cover. for instance, the block heater cord at the dealer is $70. same cord at cummins is $16. buy the fleetgaurd fuel filter. needs to be 7 micron or less. autozone etc fuel filters are 10 micron and NOT good. change the filter now, add the CRC. I get mine from the dealer as I have contacts there and its only .75 miles from my house to the shop.
    boat- 95 Scarab 22, 496 stroker, Merlin heads, lots of fun

    Tow Rig- 2011 Dodge 3500 CC Laramie, FASS pump, 160 total gallons of fuel, H&S MCC Terror Custom Tuning, Autometer, Sinister, 5" Stainless Flo Pro TB, S&B, B&W, Ravelco, Pro-Tech, B&W Companion, Pac Brake bags, 19.5 Vision's, now a dually pulling a 36 foot Cyclone and living in it full time

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    Senior Member vdrivenman's Avatar
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    Default 5.9

    checked with the installer(wife).it is a bullydog and not a edge juicer. locally could not locate any crc so have added two containers of sea foam and some kleen to fuel. now trying to find sometime to physically drive it as compared to letting it sit and idle. when driving it should i turn it to the highest fuel(power) program or leave it in the conservation program. how soon if any change should i see? will it be gradual or instant?

    ill continue to look for some crc and get a fuel filter .
    thanks

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    Senior Member STV_Keith's Avatar
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    How far are you from Willis, TX?
    Keith-


  10. #8
    Senior Member vdrivenman's Avatar
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    Default 5.9

    over in orange 20 miles east of bmt. i was through willis on monday.dropped a set of zooms of to matt wheeler and then on to the walls unit to pick one up!

  11. #9
    Senior Member STV_Keith's Avatar
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    Chris Strickland at Relentless Diesel in Willis may be able to help.
    Keith-


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    first off the common rail trucks are awsome and have great power potential and longevity if taken care of propperly normal services are a must for any engine like the other guys said dont buy your filters from autozone or checker, cummins has there own line of filters under the fleetgaurd brand this is the best route imo, advice on your k&n ditch that dirt sucker if you drive down a dirt road you will suck dirt being from the deserts of az i have seen tons of trucks cars and atvs/mcs get dusted from these high flow filters the flow alot of air but they dont filter very good, there are tons of better choices out there for air filtration nowadays, ok back to your smoking at start up it could probably be contributed to your tuner trying to max out your rail pressure beyond factory limits causing you to loose an injector tip, which i doubt happened in your case the other thing that can happen is carbon build up from the increased fuel flow and injection timing with low engine temps, now if your tuner is "sloppy" like most of them or you might have gotten air into your fuel system and scored an injector which is easy with todays shitty fuel and the tiny tollerances in the injectors fuel lubrication is key in the older trucks we didnt have this problem cause the fuel was great and the tollerances were way bigger after you get your issue straightened out i would keep up on the fuel additive i like "diesel power service" it comes in a white bottle its good stuff for older trucks 97 and earlier ill run a splash of atf thru the tank but dont get caught with red in your tank its not worth the hassel plus the new engines hate atf its to thick to go thru the injecor tips and cause terible things to happen

    good luck with getting her fixed

  13. #11
    Senior Member vdrivenman's Avatar
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    Default 5.9

    truck never gets driven off road dirty/dusty conditions. changed the filter got what i consider best i could for the time a wix. dodge dealer gave my some wynn's two part.1st part was called purge pour it into the fuel canister when changed filter.put 2nd part in the tank. already had two cans of sea foam in the tank.

    immediately saw improvement and has all but completely stopped smoking.still barely visible.haven't had it out on the hwy to run it at any speed for any length of time.

    thanks for the advice. i will locate some crc and obtain a cummins filter just in case.

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    Senior Member southwind21's Avatar
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    03 shouldn't be common rail

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    Senior Member southwind21's Avatar
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    Oreilleys carries fg filters and proven studies show k&n filters better than conventional paper filters, fuel breaks dwn with age, always run an additive at recommended lvls in lsfuels and on 5.9 I would recommend filter change same as oil change. Never double doosh can Gould plungers in inj

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    Quote Originally Posted by southwind21 View Post
    03 shouldn't be common rail
    Good call for some reason when i read that it said 06

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