Webasto copper fuel line

[Srm]

Hello tuggers. I have a 2020 R27 with a Webasto 2000STC heater. Having huge challenges! I have replaced the burner which was very fowled and still no resolution. Checked fuel flow and it was very weak. Tried from the tank and also from a dish of kerosene with a short pick up tube. Bad to little flow from both so replaced the pump. Still no worky! Took it apart and compared flow from tank and from the little dish of fuel. Big difference. New pump flows better from dish but is not able to draw from tank. My question is; Can kerosene go bad and plug the copper intake line inside the 5 gallon tank? If so, do you recommend blowing it out with air pressure? To access the tank and the other end of the copper tube, I will need to pull the oven out. Is that my next step or has anyone had experience with this and did something else? Any tips would be greatly appreciated. It would appear that the partially plugged tube causing limited flow did not allow for sufficient fuel to get to the heater and it slowly fowled the burner and burnt out the pump? Thoughts? Any tips would be greatly appreciated. Cheers. Steve - "Joy Seeker"

 

[venajeff]

A possible cause could be microbial contamination. It will create a gel like substance that clogs up everything. If that is the case then I would recommend blowing out the fuel line then siphoning out all the fuel you can. Put fresh fuel in with a biocide additive.

https://www.westmarine.com/biobor-biobor-jf---diesel-biocide-and-lubricity-additive-16-oz.-518696.html

The unfortunate part, that I have encountered in marine diesel tanks, is cleaning up that gel from inside the tank can be difficult. If you think its bad you might have to figure out a way to agitate the fuel in the tank and siphon it out a couple times replacing with fresh fuel each time. Good luck.

 

[Srm]

A possible cause could be microbial contamination. It will create a gel like substance that clogs up everything. If that is the case then I would recommend blowing out the fuel line then siphoning out all the fuel you can. Put fresh fuel in with a biocide additive.

https://www.westmarine.com/biobor-biobor-jf---diesel-biocide-and-lubricity-additive-16-oz.-518696.html

The unfortunate part, that I have encountered in marine diesel tanks, is cleaning up that gel from inside the tank can be difficult. If you think its bad you might have to figure out a way to agitate the fuel in the tank and siphon it out a couple times replacing with fresh fuel each time. Good luck.

Thank you so much. I will try that. Keep well.

 

[Srm]

Mission accomplished! Removed the stove and gained access to the tank. Removed the fill hose to peek inside tank. Also took the pick up tube out and it was completely fouled and plugged. Fuel was cloudy with some water beads on the bottom of the tank. This is what you get in 5 years without really using the heater or changing the fuel. Used my compressor to blow air through tube and copper line back to pump. Bought a little pump that fit on my cordless drill and removed all the fuel and water droplets. Had to run through 5 cycles to get fuel to prime and then "success" Burns nice and hot. Much hotter than it was prior to failing. I now feel like an expert in Webasto heaters. Cheers

 

[Bob&Jilly]

Mission accomplished! Removed the stove and gained access to the tank. Removed the fill hose to peek inside tank. Also took the pick up tube out and it was completely fouled and plugged. Fuel was cloudy with some water beads on the bottom of the tank. This is what you get in 5 years without really using the heater or changing the fuel. Used my compressor to blow air through tube and copper line back to pump. Bought a little pump that fit on my cordless drill and removed all the fuel and water droplets. Had to run through 5 cycles to get fuel to prime and then "success" Burns nice and hot. Much hotter than it was prior to failing. I now feel like an expert in Webasto heaters. Cheers

Glad you got it done, good case to do regular maintenance
with BIOBR JF