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Old 11-11-2012, 08:33 AM   #1
rdm's Avatar
Entegra Owners Club
Join Date: Nov 2002
Posts: 78
7500 onan quiet diesel wont start

just heading to Alabama for 3 weeks
our generator wont start
it fires but wont idle
code blinks 3 times
oil topped up
coolant topped up
fuel at 1/2 tank
had it serviced in gaffney year ago
probably only 8-10 hr use since then
thanks for the help

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Old 11-11-2012, 08:36 AM   #2
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Fleetwood Owners Club
Join Date: Apr 2011
Location: New Orleans, La.
Posts: 216
Could be the fuel filter if yours has one check your owners manual

Al & Katie
2005 Excursion 39L Cat C7 350 HP
Retired 33 years NOFD and survived Katrina
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Old 11-11-2012, 08:47 AM   #3
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Join Date: Dec 2006
Location: St. Augustine, FL
Posts: 3,579
RDM, After the 3 blink code just tap and release the stop switch to get the secondary code.
Are you priming before trying to start? Prime by holding the stop button down for about 30 seconds before trying to start
'02 Ultimate Advantage 40J Spartan MM - Cummins ISC
2013 Jeep Rubicon JK Unlimited
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diesel, onan

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