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My several 90- cars with the Walbro fuel pump system crank longer than the earlier Bosch cars. Worse in the morning. I've put a fuel pressure gauge on several of them and can see the pressure drop soon after shut down. Mt 90T has a new Walbro insert, filter and tune up. Car has 120K. With the gauge I can see it drop to 20 psi in matter of minutes after shut down. Gets lower if it sits overnight. On cold morning startup it cranks about 7 seconds. During the day it starts faster. It's that crappy plastic check valve.
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