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Old 06-08-2016, 06:37 AM   #11
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We had our gen set for two weeks before it started giving me trouble starting. With less than one hour on it, the fuel pump was bad. I could have opted to wait six weeks for an appointment with Cummins/Onan but instead replaced the fuel pump. Since then it works like a charm but it does take about two tries before it starts and requires priming for a good twenty seconds or so.
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Old 06-08-2016, 09:32 AM   #12
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Thank you all! I was out fiddling with it last night. And "fiddle" is about all I can do because I'm not much of a small-engine guy. I held prime down for 30 secs, at the genset (not inside) and I could hear clicking and eventually smelled gas.

So, although I didn't yank the fuel line from the carb and actually see gas, I thought the fuel pump might be working.

While cranking, I yanked on the two wires at the top that connect to the carb. I'm guessing one could be a choke? Not sure what the other one could be, throttle?

Anyway - I was able to get it to catch and fire and run for about 5 seconds by pulling those wires. But 5 seconds was about all I could get.

The meter says 27 hours on it, so clearly someone had it running before me.

I'm thinking I really need to check the fuel pump, yank the line off and watch it pump gas to the carb as the next step.
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Old 06-08-2016, 09:13 PM   #13
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Quote:
Originally Posted by pconroy View Post
Thank you all! I was out fiddling with it last night. And "fiddle" is about all I can do because I'm not much of a small-engine guy. I held prime down for 30 secs, at the genset (not inside) and I could hear clicking and eventually smelled gas.

So, although I didn't yank the fuel line from the carb and actually see gas, I thought the fuel pump might be working.

While cranking, I yanked on the two wires at the top that connect to the carb. I'm guessing one could be a choke? Not sure what the other one could be, throttle?

Anyway - I was able to get it to catch and fire and run for about 5 seconds by pulling those wires. But 5 seconds was about all I could get.

The meter says 27 hours on it, so clearly someone had it running before me.

I'm thinking I really need to check the fuel pump, yank the line off and watch it pump gas to the carb as the next step.

I forgot to mention that. My old pump did manage to move some gas but not enough to sustain it running. If it is the pump, Cummings replacements run about $200-250. Pretty pricy for a pump that some Nissan fuel pumps can be substituted for about $75.
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