Also, use actual cat filters on fuel at least, it makes a huge difference on my 3406e
Also, you say both c15 and 3406e, those are very very similar but doesnt tell us what it actually is, such as "1lw" or "6nz" the engine prefix.
C15 down on power!
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Gix1k, May 23, 2021.
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My problems started after a year of running donaldsens and then got an oil chg, ran through 2 sets of filters in 1000 miles, changed em to cats and the problem just disappeared. I THINK its something to do with the micron size of cats being larger essentially allowing better fuel flow.
If you change oil at ta, they dont upcharge for cat filters anymore and usually stock themshooter19802003 and Gix1k Thank this. -
Had Donaldson too, scrap, new cat filters installed after.
I noticed the fuel pressure gauge took 45 seconds to go from 0-80 psi while starting truck and engine running.
Cat filters immediately go to 80 at the press of a starter buttonGix1k Thanks this. -
Two filters, two sensors. I’ll try the filters first.
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Shawn2130, shooter19802003, Coffey and 1 other person Thank this.
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Shawn2130, shooter19802003, Muddydog79 and 1 other person Thank this.
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I assume it’s the one I marked the blue line on. I removed it and it has a male end, new one has female end.
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Did I pull the wrong sensor?
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