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  #1  
Old 05-09-2015, 06:00 PM
ssechrist ssechrist is offline
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Default Onan intake manifold

Took the intake manifold to check it. I'm having problems with the engine acting like it's running out of gas, I have to play with the choke to keep it running. I learned the intake manifold is a 2 piece & I am trying to figure out how to get it apart so I can reseal it.
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Old 05-09-2015, 06:02 PM
ssechrist ssechrist is offline
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Another pic
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Old 05-09-2015, 06:56 PM
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dvogtvpe dvogtvpe is offline
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those aren't really meant to come apart. if you are concerned that its leaking put it back on the tractor, run the engine and spray starting fluid or carb cleaner around the seam.
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Old 05-09-2015, 07:00 PM
ssechrist ssechrist is offline
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Originally Posted by dvogtvpe View Post
those aren't really meant to come apart. if you are concerned that its leaking put it back on the tractor, run the engine and spray starting fluid or carb cleaner around the seam.
Thank you dvogtvpe, I'll give that a try.
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Old 05-09-2015, 07:35 PM
J-Mech J-Mech is offline
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They are known to leak. Don is correct, the best thing is to see if it actually is before tearing it apart. There is a rubber seal inside of it. You have to drill the rivets out, pull it apart and silicone it back together, then install new rivets. No gasket available because as Don said, it wasn't meant to be disassembled.
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Old 05-09-2015, 07:37 PM
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R Bedell R Bedell is offline
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Why not just run a bead of High Temp RTV around the seam.....????
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Old 05-09-2015, 07:46 PM
J-Mech J-Mech is offline
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Why not just run a bead of High Temp RTV around the seam.....????
It wouldn't work. If it is leaking, it would be small area and hard to find. The seam should be pretty tight and it's unlikely that it would get in deep enough to seal it. I suppose you could try it, but even if it does work, I doubt it would last long.
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Old 05-09-2015, 08:00 PM
ssechrist ssechrist is offline
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They are known to leak. Don is correct, the best thing is to see if it actually is before tearing it apart. There is a rubber seal inside of it. You have to drill the rivets out, pull it apart and silicone it back together, then install new rivets. No gasket available because as Don said, it wasn't meant to be disassembled.
Thanks J-Mech, it looks like the gasket was prig ally silicone or it has been resealed before.
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Old 05-09-2015, 08:04 PM
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if I were to drill one apart I'd try to use screws of some sorts to put it back together. so its easily servicable
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Old 05-09-2015, 10:18 PM
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I drilled out the rivets on my 982 with the Onan and sealed it up with black high temp Permatex that was rated for use in gas and oil. I used small screws and nuts with lock washers and a dot of locktight on each. Put it all back together with new intake gaskets and carb rebuilt. After that it ran great, just inspect the intake well mine had hairline cracks and I had to make one good one from two bad.

Bob
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