ozark01 Show full post »
ozark01
78buckshot wrote:
Do you own the regulator or is it property of the propane co.? Word on the street is that the regs should be replaced every ten years. If you own it I would remove the spring and give it a good stretch, put it back in and adjust to the higher pressure.


It belongs to the gas company but I am still wondering why the gas pressure jumps like crazy and is erratic when the gen is running. What else could it be except the regulator? What I am hearing here is that the pressure should move a bit but stabilize quickly and I am not seeing that happen. Thanks for keep working on this with me...
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78buckshot
I think the erratic gauge may be due to the intake and exhaust valves in the engine needing adjustment. The pulse from the intake stroke is the energy that opens the demand regulator inside the generator. If the valves are not seating and creating the correct vacuum and compression then the uneven pressures will show up in the fuel system. So my best guess is that the valves need to be adjusted first, then play with regulator pressure to see if it will start with a higher pressure, next would be to lower the pressure to around 7.5 inches and observe the starting behavior. I have had to adjust pressures both ways depending on the model and fuel
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ozark01
78buckshot wrote:
I think the erratic gauge may be due to the intake and exhaust valves in the engine needing adjustment. The pulse from the intake stroke is the energy that opens the demand regulator inside the generator. If the valves are not seating and creating the correct vacuum and compression then the uneven pressures will show up in the fuel system. So my best guess is that the valves need to be adjusted first, then play with regulator pressure to see if it will start with a higher pressure, next would be to lower the pressure to around 7.5 inches and observe the starting behavior. I have had to adjust pressures both ways depending on the model and fuel

Is the valve adjustment simple or can it make a real mess of things? I'm a licensed electrician (40 years) and have adjusted the valves on older motorcycles but neither one of these makes me a generator guru. What do you think?
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78buckshot
Valve adjustment will be VERY similar to a 4 stroke bike engine but for the inexperienced person could lead to engine damage. I have not looked up the model of your genset but I assume it's a single cylinder 410 c.c. The fasteners are all metric, you will need some basic open end wrenches (10 mm), allen wrenches (6mm hex key wrench) 1/4" or 3/8" drive sockets, and a feeler gauge set with at least .002", .003", .004", .005" blades. See the post under "Helpful Posts" for a more detailed look at what is involved.
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ozark01
78buckshot wrote:
Valve adjustment will be VERY similar to a 4 stroke bike engine but for the inexperienced person could lead to engine damage. I have not looked up the model of your genset but I assume it's a single cylinder 410 c.c. The fasteners are all metric, you will need some basic open end wrenches (10 mm), allen wrenches (6mm hex key wrench) 1/4" or 3/8" drive sockets, and a feeler gauge set with at least .002", .003", .004", .005" blades. See the post under "Helpful Posts" for a more detailed look at what is involved.


Thanks for the guidance....I'm going to contact the gas company first get them to check/replace the regulators then go from there.
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78buckshot
ok
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ozark01
As a followup.....the gas company did replace the second stage regulator. (Side note: I had my Yellow Jacket dial gauge connected when he arrived so I could show him the problem and when I tried to start the generator the pressure was so erratic it broke the gauge. It would no longer register any gas pressure.) Replacing the regulator helped but it still did not crank as it should. I replaced the spark plug and that seems to have fixed the problem.
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78buckshot
Did the guy who replaced the regulator put a gauge on it and adjust it?
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10kray
78buckshot wrote:
Do you own the regulator or is it property of the propane co.? Word on the street is that the regs should be replaced every ten years. If you own it I would remove the spring and give it a good stretch, put it back in and adjust to the higher pressure.
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10kray
Hello 78 buckshot, I read where you say every 10 yers regs should be changed out. I have a cabin in the woods and we have a 1000 gal Propane tank and we have never had a regulator change , we are serviced by a local gas company, they deliver and have checked pressure regs before at our request. I have noticed though that our gas lights all seem to be burning an orange glow not the whiter glow of yesteryear. Being our generator is on it's own newer reg could this be why our lights are not functioning as they once did ?
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78buckshot
Ye, it sounds like the lights are running on too low of pressure.
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