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Help with Honda BF40 fault codes

R

rwspetz

New member
I have a 2011 Honda BF 40 engine. I've been running it for 3 years. There is an alarm that sounds pretty consistently, mostly when I am at low idle. If I am running full bore, then it usually will not sound. When the alarm goes off, I just put it in neutral, shut the engine down and it fires right back up. It used to happen once every couple trips but is happening closer to a dozen times each trip.

I just changed the inline fuel filter, installed a raycor, and changed the high pressure fuel filter. So I'm pretty sure I have everything squared away from the fuel side of things. But the alarm still sounded a handful of times, seemingly always at lower idle.

I used a paper clip to run the codes on the engine(thanks youtube). The codes flashed one short, 3 second break, 2 long flashes, 6 short flashes. I think it means 26, but when I contacted a dealer they said that the BF40 doesn't have a code for 26, so maybe I have it wrong or I shouldn't trust the paper clip method. Fault code 26 on the bigger engines is oil pressure switch I believe, but I'm interested to hear what people on the forum think.

I live in a remote place on the Aleutian Islands, so sending the engine out is expensive, and I'm hoping I can try my luck before I get to that option.
 
Maybe inspect/replace the water pump for the same reason you changed your filters? Maybe have a look at the thermostat to see if there's a lot of crud build up? If you see crud in the thermostat housing, safe bet the rest of the internals look the same way. Last, do you have access to an infrared thermometer? Those are good for a quick check of the cooling system without tearing anything down.
 
Alan Hicks said:
Maybe inspect/replace the water pump for the same reason you changed your filters? Maybe have a look at the thermostat to see if there's a lot of crud build up? If you see crud in the thermostat housing, safe bet the rest of the internals look the same way. Last, do you have access to an infrared thermometer? Those are good for a quick check of the cooling system without tearing anything down.
Click to expand...

We have notoriously poor fuel here on the island due to WWII era fuel tanks. I know for a fact that I had water in my fuel on numerous occasions, so that's what lead me to change my fuel filters. The high pressure fuel filter was pretty ugly and I hoped that replacing it would do away with the alarm.

I will check the thermostat, but the engine always pees and It's never overheated for as long as I've used it. Not sure on the infrared thermometer, I'll have to ask around or look at the store. I'm sure the engine probably has crud built up for sure.

Thanks for the response.
 
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