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BN4 heater by Arnoultt
Post New Message I've been told that the Eberspacher BN4 heater uses a very specialized fuel pump that delivers only precisely metered fuel, and that no other fuel pump will work.

However, looking at the service manual for that heater, it appears that the BN4 has a pressure regulator of its own, and that the standard fuel pump merely receives power to pump fuel--I don't see anything indicating that it "precisely meters" fuel.

Bottom line is that it looks to me like (contrary to what I'm being told) a low-pressure fuel pump that would normally feed a carburetor should work as well.

Is there something I'm missing? Here's one of the wiring diagrams I've been looking at:

All Messages in ThreadAuthorDate
Post New MessageBN4 heater Arnoultt 10-22-04  
  Reply to MessageRe: BN4 heater Al Owen 11-4-08  
  Reply to MessageRe: BN4 heater Al Owen 10-21-08  
    Reply to MessageRe: BN4 heater Alexander 1-11-09  
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