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Fuel in engine oil

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Oceanpro22

New member
I have an 2006 bf225. I had the over heat alarm go off a few times the other day and ended up heading back in on the kicker, i checked the oil and it was very much over filled and definately mixed with gas. I've read it might be the thermostat is bad or possibly the fuel pump. Kind of a strange problem and was wondering if anyone has heard of this before.
 
If the engine is running too cold, it will allow fuel to get into the oil. Pull the t-stats and see if they are stuck open. If so replace. If not, test in hot water. They should start to open at 140 F and be fully open (3 mm) at 160 F.

Another place that fuel can get into the oil is at the low pressure fuel pump. Pull the pump, reconnect the fuel lines to it, and have someone rapidly squeeze the pump up bulb and look for leaks at the fuel pump cam arm.

Yet another place that it can happen is where the water tube passes through the oil pan. There is a sealing grommet on the top of that water tube that can fail. To fix that takes a lot of work and involves removing the lower unit, the lower cowling, and the oil pan. The procedure to all of that is covered in Honda service bulletin #56. If you need to go there, then plan to also exchange your exhaust tubes with the newer re-designed ones. If you need a copy of SB #56, send an e-mail to me at [email protected].
 
chawk_man said:
If the engine is running too cold, it will allow fuel to get into the oil. Pull the t-stats and see if they are stuck open. If so replace. If not, test in hot water. They should start to open at 140 F and be fully open (3 mm) at 160 F.

Another place that fuel can get into the oil is at the low pressure fuel pump. Pull the pump, reconnect the fuel lines to it, and have someone rapidly squeeze the pump up bulb and look for leaks at the fuel pump cam arm.

Yet another place that it can happen is where the water tube passes through the oil pan. There is a sealing grommet on the top of that water tube that can fail. To fix that takes a lot of work and involves removing the lower unit, the lower cowling, and the oil pan. The procedure to all of that is covered in Honda service bulletin #56. If you need to go there, then plan to also exchange your exhaust tubes with the newer re-designed ones. If you need a copy of SB #56, send an e-mail to me at [email protected].
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Thanks man! We will start with the thermostats and hopefully that does it, I appreciate the help!
 
Prob and hopefully low pressure pump leaking into cylinder head. Are you having milky oil? As Chawk described, it's a possibility, if it was the water tube passing through the oil pan is faulty.
 
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