This is the fuel system post, for the issue I have been having, I also made a post for the igntion system, same issue.
the motor will intermittently lose all power, fire a few times sporadically and then run fine. Sometimes it will be bad enough to stop motor and it has to be restarted and then runs again. I have had this happen right after starting at times and sometimes after it has run for awhile. I only lose rpm on gauges all other gauges are still reading like ignition switch is still on. When it is running, its running good, and no change in gear or in idle.
While trying to chase this down I have done quite a bit, and I will try to cover only the fuel system in this post. (I am kind of new to forum, hope I am doing this correctly)
I run ONLY no ethanol fuel, when winterizing I filled tank and added stabilizer. I only add fuel 5 gallons at a time from a clean container. The tank is aluminum 20 gal. 10-15 yrs old. I run RACOR water/fuel seperator right after tank(above tank), 3' run downhill to elec. fuel pump, then to fuel pressure gauge, then polishing filter to carb.
After issue started, I replaced Racor, tank vent line, polishing filter, added fuel pressure gauge, polishing filter, and rebuilt/ cleaned carb twice. This may be related so I will add that the plugs used to get dark carbon build up fairly quickly and looking through spark plug holes there is a good amount of build up in there also, so I set idle mix a full turn more counterclockwise to lean fuel and plugs have gotten much better. All of this seemed to make the issue better, but not completely gone just less frequent.
I got ahead of myself and messed with igntion, electrical, exhaust and fuel at the same time (i now understand this is frowned upon) so I cant put my finger on the exact problem or have I been able to solve the issue.
When it is hesitating/dying I still have 3 1/2 to 4 psi? on fuel gauge.
There is a kind of loud sound coming from carb when running, like if u were blowing into a straw and very quickly covered and uncovered the end. I thought this was the sound of debris in a jet, but I now think it is the scavenge tube picking up a bit of fuel in throat?
The issue is still intermittent after all this, but seems to be getting better.
I am leaning towards fuel system but have not ruled out igntion, elctrical, or possibly even exhaust system? I will add pics and I am sure I forgot to add some info that I have come up with. any advice or help is greatly appreciated!
the motor will intermittently lose all power, fire a few times sporadically and then run fine. Sometimes it will be bad enough to stop motor and it has to be restarted and then runs again. I have had this happen right after starting at times and sometimes after it has run for awhile. I only lose rpm on gauges all other gauges are still reading like ignition switch is still on. When it is running, its running good, and no change in gear or in idle.
While trying to chase this down I have done quite a bit, and I will try to cover only the fuel system in this post. (I am kind of new to forum, hope I am doing this correctly)
I run ONLY no ethanol fuel, when winterizing I filled tank and added stabilizer. I only add fuel 5 gallons at a time from a clean container. The tank is aluminum 20 gal. 10-15 yrs old. I run RACOR water/fuel seperator right after tank(above tank), 3' run downhill to elec. fuel pump, then to fuel pressure gauge, then polishing filter to carb.
After issue started, I replaced Racor, tank vent line, polishing filter, added fuel pressure gauge, polishing filter, and rebuilt/ cleaned carb twice. This may be related so I will add that the plugs used to get dark carbon build up fairly quickly and looking through spark plug holes there is a good amount of build up in there also, so I set idle mix a full turn more counterclockwise to lean fuel and plugs have gotten much better. All of this seemed to make the issue better, but not completely gone just less frequent.
I got ahead of myself and messed with igntion, electrical, exhaust and fuel at the same time (i now understand this is frowned upon) so I cant put my finger on the exact problem or have I been able to solve the issue.
When it is hesitating/dying I still have 3 1/2 to 4 psi? on fuel gauge.
There is a kind of loud sound coming from carb when running, like if u were blowing into a straw and very quickly covered and uncovered the end. I thought this was the sound of debris in a jet, but I now think it is the scavenge tube picking up a bit of fuel in throat?
The issue is still intermittent after all this, but seems to be getting better.
I am leaning towards fuel system but have not ruled out igntion, elctrical, or possibly even exhaust system? I will add pics and I am sure I forgot to add some info that I have come up with. any advice or help is greatly appreciated!
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