DEF in Diesel fuel tank

[horserustler]

Accidentally added some DEF to diesel tank.

[horserustler]

Can you siphon diesel through the in tank fuel pump?

[CamGTP]

Siphon through the pump might be hard. If you can command the pump on and have it drain into a bucket, that would be better. Or just drop the tank and remove all the bad fuel.

[newdude]

On 5/17/2024 at 10:17 AM, horserustler said:

Accidentally added some DEF to diesel tank.

 

On 5/17/2024 at 10:36 AM, horserustler said:

Can you siphon diesel through the in tank fuel pump?

 

 

Did you start the truck after doing it, or simply turn the key to the on position so the in tank fuel pump ran?

 

If so...not good.

 

If the engine has been cranked, the entire fuel system from the fuel fill pipe to the high-pressure fuel pump, fuel rail, injectors, injector return fuel lines, high-pressure fuel pipes and low pressure return lines must be replaced.

 

If the engine has not been cranked, the system from the fuel fill pipe to the high-pressure fuel pump as well as the high-pressure pipe from the pump to the rail must be replaced along with the low-pressure return lines.

 

If the in-tank fuel pump has not been run, the fuel fill pipe, tank and fuel pump module should be replaced.

 

Here is GM's guidelines:  Diesel Exhaust Fluid Contamination in the Fuel System – TechLink (gm-techlink.com)

 

 

Edited May 18 by newdude