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Where's the Fuel Check Valve? 900 1993

My car requires a lot of cranking to start if it's been sitting for more than a few hours.

It also will stumble a bit on the first block or two. Then it runs great, and restarts instantly. The only other symptom is that I am not hearing the main valve prime itself ("bzzzz!") when I turn the ignition key to "ON".

Based on the 700 FAQ, I know it could be the pump operations, so I am going to start by making sure I am getting power to the pumps (and, if necessary, checking/repairing the relay to get power to the pumps).

But if the pumps are ok, then I'm guessing it's the check valve, since the car runs good and restarts fine otherwise.

Where is the check valve and how do I replace it?

Thanks...

--Greg






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