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Time for injectors?

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At idle I am showing 2-4% engine load. I can't remember but I think that means my injectors are getting wore out??

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  • Mopar1973Man
    Mopar1973Man

    When engine load drop near zero injectors are wore out. Once it drops to zero the engine idle will rise. Like with summer heat my idle is back to 13% engine load again.   Pop pressure will d

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  • Owner

When engine load drop near zero injectors are wore out. Once it drops to zero the engine idle will rise. Like with summer heat my idle is back to 13% engine load again.

 

Pop pressure will dictate what engine load percentage. Lower the pop pressure the lower the engine load. Like 310 bar is roughly 7 to 9%. Like my 320 bar injectors are 11 to 13%

 

As for you down at 2 or 3% is roughly 260 bar which is below 293 minimum pop pressure.

 

Edited by Mopar1973Man

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    • Author

    What would a good injector be for me? Size and pop pressure? Vco or sac.   Mostko towing or hauling and some daily driving.  Stock trans but can I tune down the power with the quad enough to not blow my trans with some 150hp injectors??

    Do these rules apply to large injectors like 7x012s? When I first start the truck it's around 10%, but then fluctuates from 2-6 when warm

    • Owner

    Yes. Im 7 x0.010 injectors. But I'm popped higher at 320 bar. You most likely popped at 305 bar which give very little margin being 293 bar is bottom.

    • Author

    Any idea on low I can go with say 150 hp injectors on the quad and still run good and not have crazy egts.  Or just not doable?

    I keep fairly cool with proper tuning and 7x012s. Hx35 maxes out pretty quick if not careful. Cruising I get around 700egts at 70-75. Granted I haven't tried towing anything extra heavy. Plan to upgrade turbo at some point, but fairly happy with the current spool and power. 

    • Owner
      On 6/6/2020 at 11:50 PM, Unreal Summit said:

    Any idea on low I can go with say 150 hp injectors on the quad and still run good and not have crazy egts.  Or just not doable?

     

    I just ran from New Meadows, ID to Mohave Valley, AZ and travelled 1,800 miles there and back. My towing tune did extremely well and could possibly reach 14 MPG. EGT's on level 3 of the Quadzilla I would run just right at 1,100 to 1,200*F EGT's pulling 6 and 7% grades cruise set for 65 MPH. I'm not running a standard 7 x 0.010 but had it popped to 320 bar. Clean running very rare is a puff of smoke but just haze if your deep in the power. Even with day time temps at 105*F no issues when I left. Towing a 31 foot Jayco Eagle RV and scale out at 17,300 pound GCW.

     

    Warning my towing tune is running some high timing and highly suggested to have studs. 

    Edited by Mopar1973Man

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    Welcome To Mopar1973Man.Com LLC

    We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.