- Moderator
- #1
Wasn't sure where to post this, figured here might be best. The engine on my RV genny is a 4 cyl Yanmar, 4tn82 series...IDI with a mechanical injection pump and return line.
Does not have a mechanical fuel pump and is set run with a governor and fuel shutoff solenoid just like a welder.
It has an electric pump which you can activate for priming when the genny is not running....once the genny is running a relay drops out and the prime does not work.
So here is the situation...
Genny has on occasion run for 10-20 min and then starts to sputter and drop rpm...does it under load or no load. Finally went through it yesterday and to my surprise a diode was open that feeds the power to the fuel pump.
In effect, there was no lift pump at all....so is/was it possible that the injection pump was able to keep it running (for the most part)?
Does not have a mechanical fuel pump and is set run with a governor and fuel shutoff solenoid just like a welder.
It has an electric pump which you can activate for priming when the genny is not running....once the genny is running a relay drops out and the prime does not work.
So here is the situation...
Genny has on occasion run for 10-20 min and then starts to sputter and drop rpm...does it under load or no load. Finally went through it yesterday and to my surprise a diode was open that feeds the power to the fuel pump.
In effect, there was no lift pump at all....so is/was it possible that the injection pump was able to keep it running (for the most part)?