turbofiat124
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- Joined
- Mar 23, 2011
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This is a follow up post to a question I asked awhile back but turned into a spark plug thread so I'll just recap.
17.5 B&S. I don't know the exact model number but it's a fairly new engine. I mean built in the last 10 years.
The float valve stuck on the carburetor stuck and it filled the crankcase with gasoline. I took the carburetor apart and changed the oil. I mowed with it the rest of the day.
Since then, this engine requires starting fluid or carburetor cleaner to "jump start it" when cold. Once it runs for awhile it starts right up and runs fine.
Things I've checked so far:
1) Installed new spark plug
2) verified that the choke is working.
I know the choke is working because I can close it and stall the engine.
3) Checked the solenoid in the fuel bowl. It did not appear to be working so I broke the tip off the plunger. Sure enough when I turned the ignition off KAPOW!. So whether it was working or not does not seem to be the cause.
4) Plenty of fuel flow to the carburetor. New filter.
Possibilities:
Choke is out of adjustment after reinstalling the carburetor and when fully closed is completely shutting of the flow of air so no fuel can be pulled up through the jets. I have not tried to crack is open a bit but will.
Trying to start a hydrolocked engine over has bent the valves (but would it run smooth and fine afterwards)? I initially thought this was due to a weak battery until I started seeing fuel dripping from the muffler.
This same thing has caused the valve clearance to get out of adjustment (is that possible)? I think I read on here somewhere that if the valve clearance is not correct, the engine will either not start or requires starting fluid to initially get going.
What other possibilities could there be?
I've got the shop manual for the B&S 21 hp OHV engine. Are the valve clearance specs pretty much the same for the 17.5 hp model? I will get the model number off the engine. It's in my yard barn in from of my Husqvarna right now.
Just looking for some generic B&S OHV troubleshooting tips to ponder over.
17.5 B&S. I don't know the exact model number but it's a fairly new engine. I mean built in the last 10 years.
The float valve stuck on the carburetor stuck and it filled the crankcase with gasoline. I took the carburetor apart and changed the oil. I mowed with it the rest of the day.
Since then, this engine requires starting fluid or carburetor cleaner to "jump start it" when cold. Once it runs for awhile it starts right up and runs fine.
Things I've checked so far:
1) Installed new spark plug
2) verified that the choke is working.
I know the choke is working because I can close it and stall the engine.
3) Checked the solenoid in the fuel bowl. It did not appear to be working so I broke the tip off the plunger. Sure enough when I turned the ignition off KAPOW!. So whether it was working or not does not seem to be the cause.
4) Plenty of fuel flow to the carburetor. New filter.
Possibilities:
Choke is out of adjustment after reinstalling the carburetor and when fully closed is completely shutting of the flow of air so no fuel can be pulled up through the jets. I have not tried to crack is open a bit but will.
Trying to start a hydrolocked engine over has bent the valves (but would it run smooth and fine afterwards)? I initially thought this was due to a weak battery until I started seeing fuel dripping from the muffler.
This same thing has caused the valve clearance to get out of adjustment (is that possible)? I think I read on here somewhere that if the valve clearance is not correct, the engine will either not start or requires starting fluid to initially get going.
What other possibilities could there be?
I've got the shop manual for the B&S 21 hp OHV engine. Are the valve clearance specs pretty much the same for the 17.5 hp model? I will get the model number off the engine. It's in my yard barn in from of my Husqvarna right now.
Just looking for some generic B&S OHV troubleshooting tips to ponder over.