Howdy All,
Hope your Volvo is running fine.
I've had this 1980 for about 8 months. The main fuel pump never
really sounded good. Always had a Hum/Buzz sound to it, louder
than usual. I replaced the main pump with an OEM from FCP. But the
replacement pump also had a hum, just a bit quieter. The intank
pump is running fine. When I had main pump out I ran the intank
pump and it's fuel flow into a pan was good. I have confirmed that
the hum is the main pump.
Question: Can a original 40 year old accumulator cause the main
pump to struggle? Is the accumulator an older version of the
Check Valve and also a flow back to tank for excessive fuel?
Thanks in advance,
Joseph Segura
98 degrees in New Mexico today, but have not reached 100 this year.
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