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Webasto dripping fuel
Posted by Andre on November 29, 2017 at 2:30 pmWhen the Webasto burner is running I see a drop of fuel dripping out of the bottom of the burner head. One drop about every 10-15 seconds. So before I start ripping things apart, does anyone have any nuggets of wisdom to pass on? Could it be as easy as a loose fitting, or something like a leaking fuel pump? I am trying to be prepared so that when I get it apart I know what to look for. It is in a terrible place to work on. Very little room to get your hands and tools in and around the large water pipes that connect to it.
Next question, recommendations for the best place to buy 24 Volt Webasto parts.
Thanks
Dick replied 8 years, 8 months ago 11 Members · 15 Replies -
15 Replies
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Mine was doing the same thing. Mounting screws for the fuel pump were loose. Tightened them, no more leaky!
1999 XLV X-6872, liberty #440 -
Fuel pump or the banjo washers for the fuel lines.
Here is the best place for parts Andre.
Bus Service Inc.
605 Road 26
Sharon Springs, Kansas
67758
Tel:785-891-3714
Web: busfixx.com
Email: busfixx@gmail.com
Technical Help Line :785-891-3557 -
Dan & Tom,
Thanks for the info. Will check fuel pump bolts and see what I find.
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Andre,
If there is fuel inside of the burner case leaking out through the grommets for the fuel lines, it is a fuel pump shaft seal leak. Replace the pump to fix.
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I had an issue with the fuel shutoff solenoid valve not closing completely. Fuel would puddle in the burner after it shutoff and then on subsequent start-up, I had significant smoke until it burnt off. It caused a major carbon build-up in the burner.
The fuel shutoff valve can be rebuilt without the solenoid being replaced if the electrical part is working OK.
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Andre, be careful with that pump, they are around $400 bucks.
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Thanks to everyone.
I hope to get it apart on Saturday to at least look at the pump and fuel solenoid. Have not been feeling well, so have not worked on the bus for a few days.
I did finally figured out that the Model is a DW230, with 80,000 BTU output, and did find manuals on line that I down loaded.
The link Tom provided does have a lot of the parts, so I should be able to get what I need once I get into it.
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Ok Andre, I lied…….mine still drips…..much slower than before, but still drips.
No worries though, it’ll give Rudy something to do when we stop by.
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Dan,
I did get into mine, and the bolts on the fuel pump where just slightly loose. Tightened them and it stills drips.
I ordered a fuel pump seal kit, fuel solenoid rebuild kit and a new fuel nozzle. Will see if that fixes it, if not will wait for Rudy to look at it.
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have you changed the nozzle recently. Mine was dripping out the tailpipe and I opened it up fired it up with it point away from the bus and I had a poor flame do to dirt nozzle, incomplete combustion. Replaced problem solved.
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Andre,
When replacing the nozzle, the procedure is to tighten the nozzle, loosen 1/4 turn and re-tighten the nozzle. This seats the treads of the brass nozzle into the brass nozzle tower.
Not using this procedure can, but not always, result in a new nozzle leaking fuel around the treads.
If you have the 80,000 btu burner, please bring parts for me to use. I can service it but carry parts for the 50,000 btu burner only.
Thanks for thinking of my service a bunch. A 50 amp plug in a huge 15,000 sqft covered area is waiting your arrival. Hope you can come by if for no other reason than just a visit. Same applies to all other forum members.
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This is what I have found. It appears that fuel is leaking out of the back of the fuel pump where the shaft from the electric motor connects to the fuel pump.
I have Googled this to death and cannot find the pump on line, except maybe from the UK. Anyone ever order from this site?
I have not been able to find one on line in the states. Does anyone have a source. I tried Busfixx.com and they do not list this part. I will try to call them this week.
These are the Part numbers I have found:
Webasto Thermo 300 heater Fuel Pump | 1314580A | 9810200A
OR
203 38C
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Try here:
http://www.suremarineservice.com
http://www.parts.rvhydronicheaterrepair.com/main.sc
plus Prevost or Ruddy Leggit
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Call them Andre, they will be your best source. I had to do a fuel pump before and I think I got it from Busfix.
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Andre, here is one, cheapest I found searching part number 5000303A.
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