Moisture.

M

mick m

New member
Ok, here's a nut scratcher for you all. Briggs & Stratton. 23 HP. Belt driven 8 gpm @ 2900. 224 hrs. We are now getting in to "Winter", where it might get down to 1 or 2 Deg C. But that doesn't last long on the day.
My problem is this; The engine is somehow sucking in the cold air, that is then being turned into condensation in the air cleaner housing, which in turn gets sucked into the carbie, causing backfiring, spluttering etc.
I've tested for ethanol. None in the fuel. I run it on 91RON, same as my Honda Generator,which runs every day with no problems.
Once the temp gets up to about 10 Deg C, its not an issue. Its just these cold early mornings.
Any idea's anyone?
Cheers Mick
 
Solopressure washer said:
How about a whole in the air box to act like a drain like on a car a/c?
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Nope. No cigar for you. There's 3 holes in the base of the air cleaner to provide the necessary air flow Water cant get in. I started at 4 30am today, & it ran perfect. But it was warm, hence no moisture to create the problem.
I'm beginning to wonder if' its because of the metal causing the condensation to form over night, even tho its kept under cover.
Stay tuned people....
 
Is it possible for you to create a duct for the intake air and draw the air off from around the muffler??? something that swivels so you can draw warm air for your cold start and after everything is running OK swing the air intake away from the heat source. I have seen WINTER air intake settings on Old (1950's) cars that did just that. The air filter intake could be turned down to draw warmed air off the exhaust manifold.
 
WASH-IT H.B. said:
Is it possible for you to create a duct for the intake air and draw the air off from around the muffler??? something that swivels so you can draw warm air for your cold start and after everything is running OK swing the air intake away from the heat source. I have seen WINTER air intake settings on Old (1950's) cars that did just that. The air filter intake could be turned down to draw warmed air off the exhaust manifold.
Click to expand...

Jeez, I wouldn't even know where to begin. I was talking to my mechanic, who's from Rotorua, & they started to experience the same sort of problems in the forestry's during winter, then he came over here & he never found out how they dealt with it. I'm from Dunedin, so thank god I don't have this problem there, Id never get any work done!
 
mick m said:
Jeez, I wouldn't even know where to begin. I was talking to my mechanic, who's from Rotorua, & they started to experience the same sort of problems in the forestry's during winter, then he came over here & he never found out how they dealt with it. I'm from Dunedin, so thank god I don't have this problem there, Id never get any work done!
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So Mick, why not try a heater in front of the air supply or fresh air, try a hair dryer or if you have a heat gun like Wagner try that maybe on the side or some place. You know mate? Just had to say that.
 
Solopressure washer said:
So Mick, why not try a heater in front of the air supply or fresh air, try a hair dryer or if you have a heat gun like Wagner try that maybe on the side or some place. You know mate? Just had to say that.
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Yeah.....I half hearted thought about nicking the wife's hair dryer. Even that would be pain. I guess I'll just have to live with it. I wonder if it happens with Honda engines? Y'know mate? [I'm actually a kiwi] Some bodys got t show these Aussies how it done, Ay bro?
 
Hi again. Well the last 2 nights have dropped down to 3*, with heavy dew on everything, then rain. And the engine has not missed a beat! So what's changed? I have no idea! Same fuel, same supplier, but its just stopped doing what it was doing. I give up.
 
I waived my magic wand and it fixed your problem. LOL
 
How do everyone. The mystery has been solved. Got around the moisture in the air cleaner box by replacing it with a Donaldson air cleaner. The missing & back firing was due to the fuel tank being too far from the engine. Those round black plastic fuel pumps are not designed to pump fuel that far.
What was happening was that on cold mornings, cold air being denser than warm, & the pump working on crankcase vacuum, with the gun open it was getting enough fuel, but with the gun closed, less vacuum, less fuel, hence the back firing & missing. The carburettor was not getting enough juice due to the less vacuum. Moved the tank next to the engine, now runs like a dream.
 
Kiwi's rule!!!!!

Yeah giday mate.
Good to see you sussed out Ya problem.. KIWI can do...can beat it.
 
Me & big mouth......Saturday. 5 am. This Engine ran as tho it was designed, fabricated & tuned by NASA"S finest people.
Sunday. 5 am. Its like the primates at the zoo were given a B & S engine, & told via sign language how to put it together.
Stay tuned ....
 
mick m said:
Me & big mouth......Saturday. 5 am. This Engine ran as tho it was designed, fabricated & tuned by NASA"S finest people.
Sunday. 5 am. Its like the primates at the zoo were given a B & S engine, & told via sign language how to put it together.
Stay tuned ....
Click to expand...

Haha I hear ya on that, I have many of those days and it just urk's me till I get the situations resolved.

Thanks for updating the thread. Keep us posted, and good luck with the issue!
 
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