Gerald K4NHN
New member
My son left his 25 HP S/N OC287406 setting out side in the open the past*year and a half*and it didn't want to crank. I was running OK when it was parked. He used some starting fluid to light it off but it only wanted to run*at very high RPM's. I figured it was time for another carb rebuild. I did that about three years ago...
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We found a lot of water, and junk in the bowl and the primer pump was leaking through. All the passage ways look to be clean and I can't find any stopped up, even the two tiny ones behind the butterfly are clean.*We didn't take the fuel pump off*because we didn't know if it was still pumping or not..
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After the cleaning and replaceing the primer pump, the engine will only fire off a couple of cycles when first cranking. A shot of starting fluid doen't help at all. The spark is real hot and jumps about 3/8" to a 1/2"..* When I pulled the spark plugs they are wet. Dry them off and it'll fire a couple of*cycles again and won't untill the plugs are pulled and dried again. It acts like it's flooding to easy. I checked the float height and it was still at the 1" that it was set at on the last rebuild when I also had to replace the old float back then.. I've checked the float*needle and seat and they seem to be working like they should and cutting the fuel off.
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I've pulled a few wrenches over my years but this one is trying me... I feel like I've over looked something. With all the crap in the carb it would at least run high RPM's*and die*at low, but now it doesn't want to run at all execpt the first couple of firing cycles.. What am I missing.
*
Gerald K4NHN
Cayce, SC
*
We found a lot of water, and junk in the bowl and the primer pump was leaking through. All the passage ways look to be clean and I can't find any stopped up, even the two tiny ones behind the butterfly are clean.*We didn't take the fuel pump off*because we didn't know if it was still pumping or not..
*
After the cleaning and replaceing the primer pump, the engine will only fire off a couple of cycles when first cranking. A shot of starting fluid doen't help at all. The spark is real hot and jumps about 3/8" to a 1/2"..* When I pulled the spark plugs they are wet. Dry them off and it'll fire a couple of*cycles again and won't untill the plugs are pulled and dried again. It acts like it's flooding to easy. I checked the float height and it was still at the 1" that it was set at on the last rebuild when I also had to replace the old float back then.. I've checked the float*needle and seat and they seem to be working like they should and cutting the fuel off.
*
I've pulled a few wrenches over my years but this one is trying me... I feel like I've over looked something. With all the crap in the carb it would at least run high RPM's*and die*at low, but now it doesn't want to run at all execpt the first couple of firing cycles.. What am I missing.
*
Gerald K4NHN
Cayce, SC