| Author | Message | ||
| Kenneth Hintermeister (Barbwire)
Registered Member Username: Barbwire Post Number: 21 Registered: 6-2005 Posted From: 64.12.116.203 Rating: N/A |
anybody know of an onan guru that don't want an arm and leg to look at my 7k Marquis? Will start w/a little breath of ether, only runs about a minute, stops but will start again wo/a breath of ether but won't stay running. | ||
| marvin pack (Gomer)
Registered Member Username: Gomer Post Number: 1501 Registered: 3-2007 Posted From: 76.4.118.199  Rating: N/A |
Barbwire! Not knowing that unit,I have a feeling that you may have oil pressure shutting it down or a fuel pump/gas problem. How fresh is the gas? If it has been there for a while get it out and clean the garbage Ethanal out and try to buy 100% gas for it. I got carried away sorry! Gomer | ||
| R.C.Bishop (Chuckllb)
Registered Member Username: Chuckllb Post Number: 1569 Registered: 7-2006 Posted From: 70.218.173.251  Rating: N/A |
I know a guy in Tucson....but....you are a looong way from there!!!...   What's your manual say? Seems to me I have run into that previously....I'll cogitate on it a bit and whisk the Alzheimesrs to the side...maybe I'll have something...in time. FWIW RCB | ||
| George M. Todd (George_todd)
Registered Member Username: George_todd Post Number: 1267 Registered: 8-2006 Posted From: 99.37.28.23 Rating: N/A |
Well, If it will run at all WITHOUT the start button depressed, it is NOT low oil pressure! Low/no oil pressure will cause a stop as soon as the start button is released, and the engine will restart every time the button is pushed. Is this gas, lp, or diesel? (Doesn't really matter, you don't have fuel!) G | ||
| Tom Christman (Tchristman)
Registered Member Username: Tchristman Post Number: 322 Registered: 1-2006 Posted From: 66.218.33.156 Rating: N/A |
Might be as simple as the carb (if it has a carb) being tuned too lean. Unscrew the bottom screw 1/4 turn and see what happens. Good Luck, TomC | ||
| Jim Sanders (Sandy)
Registered Member Username: Sandy Post Number: 87 Registered: 1-2011 Posted From: 69.199.96.250  Rating: N/A |
Ken I had the same thing happen to me... There is 2 start switches in my rambler The one in the back of my bus had gotten pushed down(kill switch) The onan would start and run as long as you held the front one in start...Turn iit loose it would die. Hope this helps you Jim | ||
| Kenneth Hintermeister (Barbwire)
Registered Member Username: Barbwire Post Number: 22 Registered: 6-2005 Posted From: 64.12.116.203 Rating: N/A |
It'a gas job, Fresh gas,Don't have to hold Start button on. | ||
| marvin pack (Gomer)
Registered Member Username: Gomer Post Number: 1504 Registered: 3-2007 Posted From: 76.4.118.199 Rating: N/A |
How fresh is the gas? If it has been there for a while get it out and clean the garbage Ethanal out and try to buy 100% gas for it. I got carried away sorry! Don't ya love out corn fried GAS?? Glad that is all it was. That stuff stinks when it sets around for awhile PHEW!! Gomer | ||
| Jim Wilke (Jim Bob) (Pd41044039)
Registered Member Username: Pd41044039 Post Number: 656 Registered: 2-2001 Posted From: 184.0.13.120  Rating: N/A |
We have one of those Marquis Onans. When the gas gets old (like every 4 months), the carburetor varnishes up. Even if it will stay running, it hunts & won't hold frequency. So I have to remove the carb, strip it down & soak it in carb cleaner. (Spraying with choke cleaner doesn't get it.) I have found that the water thin paint remover works perfectly for this and I reuse it, keeping it in a new 1 gallon steel paint can I bought at Lowes. Lately I have been heavily dosing the gas tank with Seafoam and I have not had to do the strip & sok in about a year. If you strip & soak, you want to be sure there are no plastic or soft parts left on the carb, this stuff will eat them. You could buy a carb kit & rebuild it but I have not been doing that as the soft parts are fine, just varnish build up in the jets & passages. | ||
| Buswarrior (Buswarrior)
Registered Member Username: Buswarrior Post Number: 2108 Registered: 12-2000 Posted From: 174.91.142.55  Rating: N/A |
Best advice I ever got from the small engine guy who fixes my stuff: Use the prescribed mix of fuel stabilizer in ALL the gas you put in your small engines: lawn mowers, chain saws, generators, grass trimmers, leaf blowers, atv, snowmobile and any vehicle that is used infrequently. He makes his money cleaning varnish out of fuel delivery systems. Since he works on my stuff for free, he's motivated for mine to be be trouble free! I enjoy quick starting on all my gasoline powered equipment since heeding his advice. happy coaching! buswarrior |