See attached for more information on the misfire test and misfire with white smoke.Originally Posted by z28-50
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See attached for more information on the misfire test and misfire with white smoke.
2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit, Cold Air Intake, City Diesel Actuator and 50 Gallon Aux Fuel Tank.
I replaced all the injectors, and it still blows white smoke and sputtering when I get over 2000 RPM.
I have no idea what to do.
Hey all, I installed new injectors, which didn't solve the problem.
She's still blowing white smoke when you rev it up; it idles fine, but it starts blowing the white smoke when it gets above 2000 rpm.
HELP!
I'm done throwing money at it; I must find the cause.
Last edited by Lucky2209; 03-21-2024 at 03:23 PM. Reason: More info
Head gasket?
2016 Ram Laramie 3500, G56, 6.7, CC, 4x4
2016 RAM 3500 4x4 Laramie Crew Cab ,G56
Initially, you had mentioned smelling raw fuel at the tailpipe; this was a good indication of leaking injectors.
Do you still smell the raw fuel with the new injectors?
The white smoke can also be caused by coolant in the combustion chamber.
Do you have any coolant loss? Is the oil level increasing, or are you seeing any milky residue in the oil?
Are there any signs of a possible head gasket leak, like coolant bubbles in the reservoir?
The EGR cooler could leak into the exhaust if you still have it in place.
To check this, disconnect the EGR crossover tube and inspect it for any signs of coolant.
A coolant system combustion test must be performed to test for a bad head gasket.
2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit, Cold Air Intake, City Diesel Actuator and 50 Gallon Aux Fuel Tank.
To do a redneck check, remove the oil cap with the truck running, flip the cap over, and place it over the hole; if it's trying to blow off, "not rattle off, " you have excess blowby, which leans towards a bad head gasket.
II 60HP STICKS, II 33% CP3, II S464 2ND GEN SWAP, FASS 165 TITANIUM SIGNATURE SERIES, AFE INTAKE HORN, S&B FILTER, 5" TURBO BACK, ALPHAREX HEAD LIGHTS, 38X13.5X20 RAZOR M/T, MOTO METAL RIMS, 6" LA LIFT KIT, COMPLET MM3 KIT, BUILT TRANSMISSION, 6 BOLT REDHEAD STEERING BOX
I did the head gasket tests, which are negative.
We're noticing that the lift pump seems to be running intermittently.
Would that cause the same symptoms?
The intermittent lift pump operation must be repaired, but I would be surprised if it resulted in white smoke.
If anything, it should result in less flow to the CP3, causing the fuel rail pressure to lower at a higher RPM and delivering less fuel to each cylinder.
2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit, Cold Air Intake, City Diesel Actuator and 50 Gallon Aux Fuel Tank.
That's what it is doing.
The line pressure and rail pressure are way off.
If it's calling for 10-15000, it's only getting 2000 or less at times.
It doesn't even sound like the lift pump is kicking on.
The lift pump isn't getting power from the fuse box, and we can't narrow down where to start.
It sounds like a pinched wire is cutting the power to the lift pump.
2016 Ram Laramie 3500, G56, 6.7, CC, 4x4
2016 RAM 3500 4x4 Laramie Crew Cab ,G56
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