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Old 10-20-2019, 08:21 AM   #1881
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1985 32.5' Airstream 325
Lindsay , Ontario
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So sorry for your loss . Please give Lynn our best , sorry you had to cut your trip short. Seems as we age this happens more than we would like.
Stay safe and be careful on the road.
John and Anne
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Old 10-21-2019, 02:54 PM   #1882
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1982 31' Airstream 310
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Thank you fellas. Finished up with the services and what not today. Time to get home tomorrow and start getting the rig ready for our trip south in Dec....

Need to fix that shower leak and now have a problem with the genset. It has been running like a top, ran great on our trip west, now won't start. It cranks just fine but won't fire up. Not getting any smell of propane From the exhaust when cranking. We certainly have plenty of job security when owning and maintaining these old beasts.
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Old 10-21-2019, 03:47 PM   #1883
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MAYCO's 1982 310 TD

Id look at the filter. Especially if it quit after a recent fill. Probably due for replacement anyway. Check the condition of the line too. Might want to replace it.
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Old 10-21-2019, 06:48 PM   #1884
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Thanks Dave, I'll start there. And yes, this happened after a couple hours of use after a fill up. Thanks for the tip!
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Old 10-22-2019, 02:25 PM   #1885
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Do any of you know where the fuel filter is located on a propane powered Onan 6.5. Can't seem to locate a picture or narrative about its location. The fuel solenoid is visible as is the regulator butI don't see a filter. I read that there should be one to catch the oils from the propane.
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Old 10-23-2019, 06:56 AM   #1886
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Mike I don't know your generator model number but I attached a possible picture of the filter.
Attached Files
File Type: pdf filter.pdf (91.0 KB, 14 views)
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Old 10-23-2019, 07:21 AM   #1887
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Sorry Mike, my gen is a lot newer Marquis Gold 6500LP. I'm not sure on what your model would be.

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Old 10-23-2019, 08:34 AM   #1888
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Thank you guys. I'll get a picture of what I have later today. It looks like the supply line enters a small regulator, then the fuel solenoid, then to the big demand regulator. Someone said the filter is incorporated into the fuel solenoid. I'll keep nosing around.

I've got a Cummins shop 45 mins away that works on these so if all else fails...
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Old 10-23-2019, 09:32 AM   #1889
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Heres mine.
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Old 10-23-2019, 09:57 AM   #1890
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Hmmmmm, right next to the solenoid correct Dave? I've got what looks like a regulator just before the solenoid. Smaller than the one on the tank but sure looks like a regulator.
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Old 10-23-2019, 10:03 AM   #1891
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Old 10-23-2019, 11:32 AM   #1892
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Looks like yours is on a vapor pickup. Not a liquid pickup with a vapor generator at the engine. Might not have a filter.
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Old 10-23-2019, 06:27 PM   #1893
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So I proceeded on doing things on the genset that I could accomplish. I had forgotten that the positive side of the genset starter ties into the chassis battery all the way up at the Isuzu starter. The genset is cranking very slow so I pulled the cables off the Isuzu starter and cleaned the ends real well, greased them and reinstalled. Cleaned the ground strap connections. The chassis battery tests that it's in good shape. Pulled the air filter of the genset and replaced (Kansas n Colorado dust). While I had the filter off I sprayed a little bit of starting fluid in the breather tube and the genset started right up then died when it had burned the start fluid up. So I'm pretty sure it's not getting fuel. Now that could be a problem with the fuel shutoff solenoid, the regulator before the solenoid or the bigger demand regulator on the front of the genny. I couldn't get a reading on if the solenoid was getting 12v because the genset would crank very slow and then stop cranking like a dead battery. But, like I said, the chassis battery has been performing just fine and tests good on a voltage test. Soooooooo this may be above my pay grade on troubleshooting.

It is odd though, we had used the generator for several hours on our trip west and it started and ran real well. We did get a propane refill while in CO but we went to a place we have used for years when traveling out there. So I think SOMETHING is preventing fuel from getting to the carb. I think it may be time to take it in to the Cummins shop.......that will be cheap I'm sure ,
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Old 10-24-2019, 06:25 AM   #1894
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Ok, after much research, here goes.

Propane does have an oily residue that can over time, form a thick pitch like sludge that builds up in low lying, or loop areas of your propane system. This affects ASME systems in motorhomes as the line back to the generator can be very long.
The way to resolve this is to shut off system, disconnect the offending line and blow it out. You may have to gently heat a low spot to loosen the sludge. Some have also injected an alcohol base fluid into the line to thin the oil; then blow it out.

The fact that your genset worked in warmer weather and now is not, as the weather is cooler where you are now, is indicative of this afliction. The oil in the line thickens and chokes off the supply of gas. It also plays havoc with carburetors on LP gensets.

This it seems is not an uncommon problem in motorhomes. Below is just one of the many links I found about it.

https://www.rv.net/forum/index.cfm/f...print/true.cfm

I hope this helps; and for God's sake, don't blow yourself up!

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Old 10-24-2019, 08:02 AM   #1895
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WOW! Tony, good bird doggin. That does make sense. Thank you!
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Old 10-24-2019, 08:47 AM   #1896
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This might be an interesting read for you: https://www.rv.net/forum/index.cfm/f...print/true.cfm
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Old 10-31-2019, 05:40 PM   #1897
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Howdy fellas. Just a couple updates on the generator and more.
First of all I'm almost certain that my no start problem was with the 12v solenoid gas valve.
I tested the starter motor and starter solenoid the best I could with the generator in place. I found this link that helped me through the testing process;
https://www.howacarworks.com/ignitio...tarter-circuit
It's really a good tutorial for folks at my skill level, worth a look.
I did find a loose ground at the battery, how that happened I have no idea. But it was loose at the post. Once I put a charger on the start battery and got it to full charge, the starter cranked pretty good. The gas solenoid however was not opening up even when I put 12v directly from the battery. If you look at post #1891 the first picture shows the entire propane delivery system inside the generator cabinet. It is fed from a direct line from the tank, goes through a two stage regulator, then the gas valve, then the big flat demand regulator, and from there to the carburetor.
After literally staring at that system for about 30 mins, I realized that I could remove the whole system without dropping the generator. So I did, and it's sitting on the dining room table right now. Lynn loves that. I thought that as long as I have it out I might as well replace all of it. Soooooo for a bit less than $200, I ordered both regulators and the solenoid valve and got them today. So later this week I'll be installing those and hoping to hell it works.

In the mean time...........we had developed a water leak in the piping behind the shower valve when we were out west. I had a brand new, really nice chrome Moen shower faucet that has been sitting around for years. I decided to go ahead and fix the leak and install the new faucet.
I HATE PLUMBING. Seriously, I HATE IT. But it had to be done. Access was through the pantry wall that I built when I removed the ice maker. So I knew how it was built and after pulling the pantry system out, accessing the the valve was no big deal. But mannnnn, I HATE PLUMBING. Anyway, after numerous trips to the hardware store and several fittings bought but not used, I got the damn thing installed. Looks good, works good. I was fighting the clock a bit because I hadn't winterized yet cause I needed water in the system to check my work. Supposed to be in the low twenties tonight. Still need to reinstall the pantry but the plumbing is all done.
Should have taken pictures along the way but I was too damn busy HATING PLUMBING!!!
I'll get pics of the propane install. Happy Halloween...bahhh humbug
Porch light is off and I still HATE PLUMBING

PS: while I was removing the parts off the generator I did take time to blow compressed air through the propane line from the tank to the generator.....no signs of debris.
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Old 10-31-2019, 07:34 PM   #1898
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Love plumbing; can't die from a leak; it's electricity that makes me cringe, especially the amperage that can kill you.

Electrical gremlins are the worst; try to find a short, especially if the wire has pulled apart, but not enough to break the insulation. At least a leak is easy to find.

Good work Mike.

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Old 11-02-2019, 01:21 PM   #1899
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All fresh components ready to install

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Old 11-02-2019, 02:25 PM   #1900
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MAYCO's 1982 310 TD

Hose from the tank looked good?

Id consider replacing that. If its a liquid pickup or vapor, a failure has the potential of a catastrophic fire.
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