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Go Back   Only Cub Cadets > Cub Cadets > CCC/MTD Cub Cadet built Tractors (GT)
Reload this Page Onan in 2072 pop and surges (video inside)
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  #11  
Old 09-09-2014, 11:14 PM
J-Mech J-Mech is offline
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Oh and make sure you don't have a rodent hotel in the tins.
This is always good advice!

Although, that wouldn't make it backfire. Unless they chewed up the point wire.
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  #12  
Old 09-09-2014, 11:21 PM
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This is always good advice!

Although, that wouldn't make it backfire. Unless they chewed up the point wire.
You're point about the water made me realize it had been sitting for a while. I wasn't implying it would cause the problem, just making sure that it doesn't get run too hot from lack of cooling.
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  #13  
Old 09-09-2014, 11:21 PM
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Brent, I'd tune it up completely (plugs, wires, points/cond). Pull the carb, clean it, clean the fuel system throw a kit in the carb and pull the lifter covers and adjust the valves. Then see how it does.


Now, I'm not there, but it sure sounded like an exhaust backfire in the vid.
It is the B48G.

It has a brand new condenser in it, so I will get the plugs, wires, and points ordered.

It is definitely coming from the exhaust. Sounds like a gun. That's why the camera shook, scared the bajesus outa me!
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  #14  
Old 09-09-2014, 11:25 PM
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You're point about the water made me realize it had been sitting for a while. I wasn't implying it would cause the problem, just making sure that it doesn't get run too hot from lack of cooling.
He said it started about 3 months ago. Just randomly started doing it. He also said it has never sat outside. So I'm not sure about the water in the tank, but I'm going to check all possibilities. From the original paint I kind of believe it was always stored inside. Other than the decals, the paint on this thing is great. I think the decals pealed a little and someone just ripped them off.
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  #15  
Old 09-09-2014, 11:25 PM
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It is the B48G.

It has a brand new condenser in it, so I will get the plugs, wires, and points ordered.

It is definitely coming from the exhaust. Sounds like a gun. That's why the camera shook, scared the bajesus outa me!
I need to rewatch the video. My dsl at work was lagging.
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  #16  
Old 09-09-2014, 11:34 PM
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I knew what you meant Travis. Sorry, didn't mean to imply what it appeared it did.

Just because it never sat out doesn't mean it can't get water in it. A trip home with a fuel tank in the back of a truck in the rain can get water in fuel.

So can:
condensation
alcohol in fuel "absorbing" it
outdoor fuel tanks
I've seen gas stations get water in their main tanks (always fun when that happens in my area)
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  #17  
Old 09-09-2014, 11:35 PM
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I was surprised in the video you can barely hear the backfire. In person it was....well....LOUD. The second video you can hear it better, but still doesn't do it justice.
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  #18  
Old 09-10-2014, 11:32 AM
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http://www.weekendfreedommachines.co...35/265537.html

Info....
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  #19  
Old 09-11-2014, 01:59 PM
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With it hunting like it is, it sounds lean to me. Does pulling the choke out slightly straighten it out? Also I've sprayed suspected areas in the past, little at a time to see if it smooths out or changes the way it is running. I can't remember for the life of me right now what I used to detect those leaks.
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  #20  
Old 09-11-2014, 03:29 PM
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Why does everyone keep saying lean....... you don't get exhaust backfires on a lean running motor.
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