74 914 Fuel System

Behind on posting already! We finally got our internet running at the shop (more on that later), so hopefully that will leave me more time to update the blog as it will be more convenient during the day.

Wes and I picked up this 74 914 from a local hanger to do some troubleshooting. Another shop had gone through the fuel system after the car kept dying, but didn’t solve the issue. We picked up the car and hauled it over to the shop to start diagnosing the car. Immediately we discovered the fuel pump was locked up (on it’s 2nd rebuilt pump), so that prompted more investigating as to WHY the pump kept dying. Our first thought was crude in the fuel tank, which is not uncommon on these older cars. So we yanked the fuel tank and dumped it out to find about a cup of rust particles floating around in the tank. Not good. We will send the tank out to have the inside coated to prevent this problem in the future, will flush the lines, and update the fuel pump to the 75+ system. That will likely take care of the problem.

Up on the lift ready to go:

Old style fuel pump located above the heat exchanger. Fuel vapor lock was a common issue as a result of the heat in the early 914’s.

Fuel tank out of the car for cleaning/inspecting.

Part of an old sending unit rolling around in the tank.

And what we knocked out of the tank (minus the leaves)

Peering inside the tank, you can see the inner surface is not in good shape. Stay tuned…..

914Fuel PumpFuel SystemFuel TankPorsche

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3 Comments

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George

October 9, 2011 at 8:31 AM

I’m impressed with the blog!! This is a great way to keep us informed.

george

October 12, 2011 at 11:33 AM

What’s the latest?

    porschedoc

    October 12, 2011 at 11:35 AM

    Hey George,

    Tank is going to take about 10 days to get coated (dropped off a few days ago), then we can start plugging everything back together. The coating shop was a little backed up, but trying to get us in asap.

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