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Caterpillar 3208 Solutions This sub-forum is hosted by Mike Hohnstein who has been at this kind of thing for 50+ years now, guess I'm addicted. The saga has been all about progressively larger shop space since then. Honestly, never wanted to get into the CAT 3208's that were originally considered to be a throwaway engine but that's all that works in a FC in my world. Same thing with my Ford toter, that came with a NA, too much effort to hang in a 6, so been at it with the CAT V-8 for 20 years now. In reality you can get excellent life out of a CAT 3208 if it's built correctly. Post your questions about the CAT 3208 engines here and Mike will try to help you out.

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  #41  
Old 4 Weeks Ago
badandy badandy is offline
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Does the gen and engine use the same Racor?
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  #42  
Old 4 Weeks Ago
Bryce_wes Bryce_wes is offline
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Quote:
Originally Posted by badandy View Post
Does the gen and engine use the same Racor?
I don’t know. I have been looking for a fuel system schematic but haven’t found one yet. This is on an sp.
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  #43  
Old 4 Weeks Ago
Harold,Cat&Sam Harold,Cat&Sam is offline
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I had a pick-up that ran me crazy for a while . It was a little more random , but similar symptoms . Turned out that my fuel pickup tube had no screen on it and there was a piece of trash floating around in the tank that would occasionally plug up the fuel line . It would clear up after sitting for a while and run fine until the next time .
Faulty electric fuel pump or collapsing fuel line sound plausible too.

Doesn't sound like the tank is getting a vacuum on it .

Andy asked a good question , does the generator use the same filter as the engine ?

Does the generator get it's fuel from the same fuel line coming out of the tank ?
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  #44  
Old 4 Weeks Ago
badandy badandy is offline
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I found some reference to an addon pushbutton switch and facet electric pump that was also connected to an oil pressure switch. I would mess around with that, hotwire the pump to make 100% sure it's on, then see what your vacuum does. It might be the case that just cracking the filter loose just relieves the pressure until you drive it a bit.

Also, is there a check valve in that system somewhere that could have been installed backwards when the engine was getting worked on?
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  #45  
Old 4 Weeks Ago
Harold,Cat&Sam Harold,Cat&Sam is offline
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Found a post of Jim Brookshire's from 2013 . He stated that on his Sp , the generator and engine shared the same fuel line .
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  #46  
Old 4 Weeks Ago
Bryce_wes Bryce_wes is offline
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Quote:
Originally Posted by Harold,Cat&Sam View Post
Found a post of Jim Brookshire's from 2013 . He stated that on his Sp , the generator and engine shared the same fuel line .
Thank you, thats good information. I am about to change my electric fuel pump and see if that helps.it is before the racor, so it is making me wonder if it is the problem. The fuel filters I changed look as nice as when I put them in. I imagine for that vacuum level I should see some fouling if the filters are at fault.
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  #47  
Old 4 Weeks Ago
Frank W. Frank W. is offline
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IF problem was bad fuel clogging RACOR filter you would see the gunk on the outside of the filter. Very easy to see. Symptoms sound like fuel delivery for sure...fuel pump, fuel line?

You’re in a safe spot...that’s good.

Many fingers are crossed for you!
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  #48  
Old 4 Weeks Ago
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Mike Hohnstein Mike Hohnstein is offline
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Pump should be key on, oil pressure switch is for gassers. I realize there are many wired w/oil switch, not my choice and not necessary, do as you will.
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  #49  
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Harold,Cat&Sam Harold,Cat&Sam is offline
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I was wondering , does the electric fuel pump also feed the generator ?

Does the generator have it's own pump and filter ?

The answers to these questions , me not know . Maybe someone with SP experience will come along with these answers .
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  #50  
Old 4 Weeks Ago
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Bill Pape Bill Pape is offline
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Quote:
Originally Posted by Harold,Cat&Sam View Post
Found a post of Jim Brookshire's from 2013 . He stated that on his Sp , the generator and engine shared the same fuel line .
In addition the 8.0K onan has a fuel pump, it has a strainer screen on the bottom, that can be cleaned. these facet fuel pumps can tick,tick & not deliver fuel. there should be a rubber hose to the 3208 fuel filter housing on the bottom of the 3208, check this hose.
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