Help me please

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Bobo
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Help me please

Post by Bobo » Sat Jul 22, 2017 12:24 pm

Just bought a 1978 F 26 this season . The problem is that it idles fine but when I get up to 3000 rpm it losses rpm like it is starving from fuel .I replaced here we go New Fuel pump ,fuel filters , carb rebuild ,new plugs ,wires ,cap ,rotor button ,ballast resister,coil ,spark control mod. ,drain out old fuel (boat was setting for two years ) and pick up tube in tank . if you can help please it's driving us crazy. It has a 318 in it we love the boat . It ran fine when we put it in the water in June.

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Re: Help me please

Post by BeaconMarineBob » Sat Jul 22, 2017 2:25 pm

There is to much to write.
Give us a call and we will help you over the phone.
It's free

Bob
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609 713 4602
Bob Cushman, Owner
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prowlersfish
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Re: Help me please

Post by prowlersfish » Sat Jul 22, 2017 2:26 pm

Have you replaced the filter since the problem started ? Check the check valve at the tank too
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Paul
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Re: Help me please

Post by Paul » Sat Jul 22, 2017 4:00 pm

I had a problem similar to this years ago that was due to debris caught in the anti-siphon valve. This valve is the first fitting after the elbow on top of your fuel tank. It looks just like a standard fitting to connect the flared fuel line however it has a spring and check ball in it in which debris can get trapped and starve the system for fuel.

Hope this helps,
Paul
"Cruise Control" 1978 F-26HT
"No Control" 2012 9' Grand RIB

Bobo
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Re: Help me please

Post by Bobo » Sat Jul 22, 2017 6:39 pm

Took that off cleaned it put it back on . I changed filter after it started to do it

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Martino
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Re: Help me please

Post by Martino » Wed May 30, 2018 9:04 am

Bobo wrote:
Sat Jul 22, 2017 6:39 pm
Took that off cleaned it put it back on . I changed filter after it started to do it
So did you figure out the problem?

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Paul
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Re: Help me please

Post by Paul » Wed May 30, 2018 12:24 pm

Martino,
Is there a chance that you have debris moving around in the bottom of the fuel tank that can intermittently obstruct the end of the pick up tube?
Paul
"Cruise Control" 1978 F-26HT
"No Control" 2012 9' Grand RIB

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P-Dogg
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Re: Help me please

Post by P-Dogg » Wed May 30, 2018 4:29 pm

Is there a filter at the carb? Check it.

I had debris in mine, even though it is preceded by two other filters. Similar symptoms.
I needed a less expensive hobby, so I bought a boat!

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Martino
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Re: Help me please

Post by Martino » Tue Aug 06, 2019 1:31 pm

This was the fuel filler neck of my starboard tank and you can see it was also inside the tank.
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