Chris Craft Model K Fuel Pump Replacement

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Chris Craft Model K Fuel Pump Replacement

Postby Valley Girl » Wed Jul 12, 2017 7:55 am

I’m planning to replace the fuel pump on my Chris Craft 1948 Model K engine and wanted to check to see if anyone had details on how to properly do this.
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Re: Chris Craft Model K Fuel Pump Replacement

Postby mbigpops » Wed Jul 12, 2017 1:24 pm

Can you explain what you mean by "replace" ?

Are you swapping yours out for the same fuel pump only rebuilt or are you asking about how to put a different style fuel pump on the engine ?

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Re: Chris Craft Model K Fuel Pump Replacement

Postby Valley Girl » Wed Jul 12, 2017 2:39 pm

Yes, I'm replacing it with the same fuel pump (FP1) from Classic Boat Connections

http://www.classicboatconnection.com/fu ... _parts.pdf
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Re: Chris Craft Model K Fuel Pump Replacement

Postby mbigpops » Thu Jul 13, 2017 12:28 pm

Okay so I installed my rebuilt fuel pump on my KL and it was pretty straightforward.

You will need a new gasket between the fuel pump and the block and then it just bolts on.

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Re: Chris Craft Model K Fuel Pump Replacement

Postby Valley Girl » Thu Jul 13, 2017 1:16 pm

Thanks Mark -

I'm assuming the lever coming off the fuel pump goes under the lifter inside the block based on the shape. Is this correct? Did you use gasket sealant when you attached the pump?
Also, are there any Torque settings for the bolts that attach the pump to the block?

- Ken
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Re: Chris Craft Model K Fuel Pump Replacement

Postby mbigpops » Fri Jul 14, 2017 6:52 am

I am not an engine guy so I just know that the lever went in and mine works.

I used Permatex on the gasket and I don't know of a torque spec. for the bolts.

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Re: Chris Craft Model K Fuel Pump Replacement

Postby jim g » Fri Jul 14, 2017 3:31 pm

Valley Girl wrote:Thanks Mark -

I'm assuming the lever coming off the fuel pump goes under the lifter inside the block based on the shape. Is this correct? Did you use gasket sealant when you attached the pump?
Also, are there any Torque settings for the bolts that attach the pump to the block?

- Ken


The lever rides on the lobe. This is what makes the pump work.
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Re: Chris Craft Model K Fuel Pump Replacement

Postby Valley Girl » Fri Jul 21, 2017 2:46 pm

Thank you for the responses.

I installed the new pump but I'm not able to get it to prime the fuel bowl using the primer lever on the pump. Any suggestions on how to troubleshoot? Also, I placed some fuel in the bowl first before installing.
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Re: Chris Craft Model K Fuel Pump Replacement

Postby drrot » Fri Jul 21, 2017 3:40 pm

rotate the flywheel one turn. Fuel pump arm might be high on the lobe.
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Re: Chris Craft Model K Fuel Pump Replacement

Postby Valley Girl » Fri Jul 21, 2017 7:06 pm

Do I need to remove the pump or can I just crank the engine over a couple of times?
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Re: Chris Craft Model K Fuel Pump Replacement

Postby jim g » Fri Jul 21, 2017 8:38 pm

Just spin the engine over. If the carb is already full. You will not be able to prime it more.
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Re: Chris Craft Model K Fuel Pump Replacement

Postby Jim Godlewski » Sat Jul 22, 2017 6:37 am

Ken,
Turn the key and hold it for a few seconds, it should fill up and start. Just be sure you do not have any leaks.
I've not once used that primer lever to prime the bowl. It will happen.
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Re: Chris Craft Model K Fuel Pump Replacement

Postby Valley Girl » Mon Jul 24, 2017 5:09 am

Jim Godlewski wrote:Ken,
Turn the key and hold it for a few seconds, it should fill up and start. Just be sure you do not have any leaks.
I've not once used that primer lever to prime the bowl. It will happen.


Jim - This worked.

Thanks again everyone for your help!
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Re: Chris Craft Model K Fuel Pump Replacement

Postby Jim Godlewski » Mon Jul 24, 2017 9:07 pm

Beautiful! Happy Boating...
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