Aquahot smokes after service
Long story short: The motor for my 11 year old Aquahot 450 died and was replaced with a new smaller motor: same mounts, just smaller overall size. Tech said "this is the new version". During the motor...
Forum Discussion
1. You have to remove the Webasto Motor/Burner assbly from the Aqua Hot to do any work except Nozzle replacement.
2. BEFORE you remove the FEED and RETURN Diesel fuel lines you clamp them off to prevent possible leaking or siphoning of raw fuel into the casing of the Aqua Hot
3. Obviously, that part changer(NOT A TECH) did not do that. So you had a lot of Diesel get into the casing of the Aqua Hot and migrate into the boiler area chamber.
4. Once that happens it can take awhile to "Burn Off" the fuel and while moving the Motorhome any leftover spilled fuel will flow around and then leak out by the bottom exhaust and then smoke.
5. Sometimes after I have done service, there will be up to 15 minutes of white smoke OUT THE END OF THE EXHAUST pipe. Due to what the failure was and excess fuel in the burner chamber. All I can do is pull the unit outside and let run until the excess fuel in the chamber is burned out. Once that happens(15 to 30 minutes) the exhaust is clear and repeat diesel burner runnings are clear.
6. You need to clarify---- Smoke from just the elbow on the exhaust or smoke out the end of the exhaust pipe?
7. If you think it maybe excess raw diesel inside the Aqua Hot casing, the only thing I would think to do is use some type of degreaser spray water hose to flush out the inside casing of the Aqua Hot. I have never had to do that and before I would do that I would call Aqua Hot and tell them the problem and see if they agree, that flushing out the inner case is needed.
8. If it is smoking from the end of the exhaust pipe, then a NEW NOZZLE is needed. Since he botched the original repair, I would not trust that he installed or even replaced the Fuel Nozzle correctly. Doug
PS, how many hours do you think it has run since the repair?
2. BEFORE you remove the FEED and RETURN Diesel fuel lines you clamp them off to prevent possible leaking or siphoning of raw fuel into the casing of the Aqua Hot
3. Obviously, that part changer(NOT A TECH) did not do that. So you had a lot of Diesel get into the casing of the Aqua Hot and migrate into the boiler area chamber.
4. Once that happens it can take awhile to "Burn Off" the fuel and while moving the Motorhome any leftover spilled fuel will flow around and then leak out by the bottom exhaust and then smoke.
5. Sometimes after I have done service, there will be up to 15 minutes of white smoke OUT THE END OF THE EXHAUST pipe. Due to what the failure was and excess fuel in the burner chamber. All I can do is pull the unit outside and let run until the excess fuel in the chamber is burned out. Once that happens(15 to 30 minutes) the exhaust is clear and repeat diesel burner runnings are clear.
6. You need to clarify---- Smoke from just the elbow on the exhaust or smoke out the end of the exhaust pipe?
7. If you think it maybe excess raw diesel inside the Aqua Hot casing, the only thing I would think to do is use some type of degreaser spray water hose to flush out the inside casing of the Aqua Hot. I have never had to do that and before I would do that I would call Aqua Hot and tell them the problem and see if they agree, that flushing out the inner case is needed.
8. If it is smoking from the end of the exhaust pipe, then a NEW NOZZLE is needed. Since he botched the original repair, I would not trust that he installed or even replaced the Fuel Nozzle correctly. Doug
PS, how many hours do you think it has run since the repair?
