Re: Fuel Pump Leaking

Posted by Jim L. in OR On 2015/9/12 21:40:12
Quote:

HH56 wrote:
The only way I can see that the gas could get to the top of the pump from the filter bowl or from anywhere else via the tubing is if the diaphragm has a pinhole allowing the gas to get on top of the diaphragm and run out the air vent. There is a small hole in the top casting directly below the part bolted to the engine which is open to air. Possibly fuel could be running out that hole and laying on the pump if it got on top of diaphragm. If the diaphragm does have a problem it needs to be corrected before fuel gets into the engine.


Good God! Thank you Howard, I never even considered that possibility or consequence! No more driving until I get that sorted out! Pulling the dipstick and taking a wiff of the oil sounds advisable too.

Quote:

The way the filter is constructed the tube from the pump opening is in the casting at the very top. Not likely there would be any siphoning. If the diaphragm is good have you positively ruled out a crack in the glass and fuel is dripping on the engine and then running down onto the pump?


I am really wondering about that diaphragm. I got started on this because the engine at steady speed felt like it was running out of gas. Push down on the pedal, and it smoothed out. That said, I haven't look that closely at the glass bowl. I will definitely do that as well.

Howard, over the last five years, you have saved my posterior more times than I can count. Thank you yet again.

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