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09-09-2010, 06:44 PM
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#1
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Senior Member
Join Date: Feb 2003
Posts: 248
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Diesel Generator Smokes
I'm getting bad light gray smoke from my onan 5.5 quiet diesel. Really bad at start up them thins some after a couple of minutes. Also really smelly and embarasing as we are in the middle of a 2 week trip. Please help!
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09-09-2010, 07:21 PM
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#2
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Senior Member
Monaco Owners Club
Join Date: Oct 2009
Location: On the road
Posts: 2,124
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Changed air filter lately? Rich start usually means lack of air. 
__________________
Happy Trails, 
06 Dynasty Countess III ISL//3060
07 Hummer H3
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09-09-2010, 08:09 PM
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#3
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,903
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I agree, the first rule of owning a diesel: Keep all the filters changed per maintenance schedule! After changing the air filter, I would add the proper ration of Performance Formula - Stanadyne to your MH fuel tank once a month. This will clean both your diesel engines fuel systems. Does your genset have a fuel filter? How long since it's been changed?
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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09-10-2010, 11:23 AM
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#4
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Senior Member
Join Date: Feb 2003
Posts: 248
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Thanks for the replies. Filters are all new. Could be altitude related? We are camped at 7800'.
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09-10-2010, 08:11 PM
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#5
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 30,903
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Quote:
Originally Posted by Dyno Bill
Thanks for the replies. Filters are all new. Could be altitude related? We are camped at 7800'.
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Yes that could be. A non-turbo diesel engine will run too rich at high altitude, when set-up for low altitude. Same as an old carburetor auto would.
__________________
2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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09-12-2010, 04:41 PM
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#6
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Senior Member
Monaco Owners Club
Join Date: Oct 2009
Location: On the road
Posts: 2,124
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Yeah mine starts rich at Yellowstone (7730') too. Works fine here in FLA but the scenery is not as good.
__________________
Happy Trails,
06 Dynasty Countess III ISL//3060
07 Hummer H3
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09-13-2010, 06:55 PM
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#7
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Senior Member
Join Date: Feb 2003
Posts: 248
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Quote:
Originally Posted by Twomed
Yeah mine starts rich at Yellowstone (7730') too. Works fine here in FLA but the scenery is not as good. |
How did you know we were in Yellowstone? We,re in Grand Teton now, about 1000' lower and it's running better.
Thanks for the replies, all.
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09-14-2010, 07:15 AM
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#8
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Senior Member
Monaco Owners Club
Join Date: Oct 2009
Location: On the road
Posts: 2,124
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Ranger at Grant Village...altitude just rang the bell. AND...you aren't the first with the question this summer or last. It's a mountain thing.
Safe travels... 93 back here in FLA..yuck!
__________________
Happy Trails,
06 Dynasty Countess III ISL//3060
07 Hummer H3
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