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Old 05-11-2004, 09:27 AM   #15
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1959 22' Caravanner
Atlanta , Georgia
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With that choke plug messed up you may not be getting a good connection. Be sure that choke is fully open.

Did you play with that screw on the top of the rear door any? It sounds like the secondaires are coming in a littl etoo soo and causing your rich condition. The way that thing works is the spring tension is such that the engine has to pull enough air though the top doors to pull them open. Too little tension and you will run rich at 3/4 plus throttle. The bottom plates should not open below 3/4 throttle.

For base line idle I like to use a vacuum gage. Set idle to 650 RPM. attach the gage to a central port (thermac for the Aircleaner connection on passengerside near choke is usually a good one). adjust each screw till your pulling the most vacuum. Repaet a coupel times to fine tune. Once your pulling the most vacuum the give each screw a 1/8 turn lean (clockwise). Readjust to proper idle speed.

The reason this works is the closer you are to optimal fule mixture the harder the engine is going to pull vacuum. At idel being a little lean is fine because there is no load. The accelerator pump will gt it rich for acceleration till the mains can come online with air moving though the venturies.

If that doesnt cure it may be float adjustment time. There is a little tool you can use to see the float level without takign it apart. Should be instrucktions with the information in the rebuild kit.
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Old 05-11-2004, 09:49 AM   #16
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1978 31' Sovereign
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Modifying Steven's Question to Give Steven the Answer

First the good:
.........

And now the secondaries open up. Makes all kinds of power and soudns great through those headers - big smile the first time I did it

.......

Now the bad:
.........

And now the secondaries open up. Makes all kinds of power and soudns great through those headers - big smile the first time I did it

.......

Steven:

Welcome to the real world (and mileage identical to mine ).
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Old 05-11-2004, 10:43 AM   #17
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1986 34.5' Airstream 345
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Dennis - very funny!
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Old 05-11-2004, 11:24 AM   #18
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Woodstock , Georgia
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its like that Twilight Zone episode where all fluffy adjectives disappeared from everyone's writing...only the facts nothing but the facts!
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Old 05-11-2004, 12:04 PM   #19
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It certainly feels like the Twilight Zone! Except this is the episode where after you fix everything on your MH it starts to run like crap and gets lousy mileage!

Maybe it's not the MH. It could be the mechanic!

Not that I don't aspire to be just like Dennis in everyway possible but if there is one thing I want all to my own it would be to have my old mileage back. Not even going for the "10% - 20%" increase often extoled by those who have added headers. Plus I just don't like changing plugs every 500 miles.

Alan - wanna trade? Think of all that extra room and the rear bedroom and the wrap around windows. My 345 could be the perfect RV for you!
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