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Old 09-29-2020, 01:48 PM   #1
Willyt
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Default Onan gen 7.5

7.5 Onan diesel Generator was getting hard to start, now it doesn't want to fire. Last time I fired it up it took about three 5 second cranks and it fired. Ran it under load for about 45min, turned it off, turned it on and fired right up. That was a week ago, today it wouldn't fire. Got about 750 hrs on it, bought the 02 Friendship couple years ago, serviced it then with filters, oil change, changed out anti freeze and decarboned exaust. I run it under load every time I go out to start the Cat. It was turning over but didn't know if it was turning over fast enough to fire. Any thoughts on this problem ?? Thank You Willyt
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Old 09-29-2020, 06:40 PM   #2
UAHaerospace
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low House batteries.....they start the Generator
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Old 10-04-2020, 10:13 AM   #3
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Willy, glow plugs age over time. I'd be inclined to consider them as a potential problem if the engine is starting well when warm. Good luck!
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