Quadrajet Vacuum Hose Issue

todd brinkerhoff · Post by **todd brinkerhoff** » Mon Oct 07, 2013 12:28 pm

Anyone familiar with the clear vacuum hose that runs from the front of the carb to the fuel pump? The engine is running like crap, so I pulled off this hose and there is fuel flowing out of the hose from the fuel pump. The other carb has no fuel in this hose. As soon as I pulled the hose off the troubled engine, it immediately smoothed out.

koviak · Post by **koviak** » Mon Oct 07, 2013 1:02 pm

Fuel pump has failed. This is doing what its supposed to do by sending fuel back to carb in event of failure.
Only marine fuel pumps do this as not to leak in the bildge. May have a pump at the house (new), will check later. Let me know if you want it and its yours. Fits crusader 454cu.in.

todd brinkerhoff · Post by **todd brinkerhoff** » Mon Oct 07, 2013 1:05 pm

koviak wrote:Fuel pump has failed. This is doing what its supposed to do by sending fuel back to carb in event of failure.
Only marine fuel pumps do this as not to leak in the bildge. May have a pump at the house (new), will check later. Let me know if you want it and its yours. Fits crusader 454cu.in.

Great....I will definitely want it if you have one...

Thanks!

koviak · Post by **koviak** » Mon Oct 07, 2013 8:30 pm

Send me a PM with your address and cover shipping and its yours. Dennis

RWS · Post by **RWS** » Tue Oct 08, 2013 6:24 am

these style of mechanical diaphragm fuel pumps will give no warning before failure and should be replaced at least every 10 years IMHO.

If the other side or check valve fails it can fill the crankcase with gasoline.

I researched and bought mine at NAPA. Yes its a marine pump but at a far more reasonable price.

you can always keep one of the old ones as an onboard spare.

RWS

todd brinkerhoff · Post by **todd brinkerhoff** » Fri Oct 25, 2013 1:10 pm

Hey,

Just wanted to extend a THANK YOU to Koviak for hooking me up with a new fuel pump. It arrived in the mail. Your item was shipped today and is on the way. Thank you again for your help!!!! Awesome people on this forum!!!

Todd

koviak · Post by **koviak** » Sat Oct 26, 2013 5:53 pm

Glad I could help you out Todd. Dennis

summer storm · Post by **summer storm** » Sun Oct 27, 2013 12:18 pm

Now why can't the rest of the world act like this.

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Quadrajet Vacuum Hose Issue

Quadrajet Vacuum Hose Issue

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