Re: Slow to Start - Saab 9000 Bulletin Board - Saabnet.com
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Does the engine crank as fast now as before? What is the startup voltage shown on the EDU display? Is it the same now as before?
When you discharge a car lead-acid battery, it permanently loses some of its life and cranking capability. It's probable that your cranking voltage isn't quite as high as it was pre-discharge, so it'll crank just a little bit slower. Some engines take longer to start when they crank slower.
Also, it also takes fuel to start an engine. Fuel pressure leaks down when the car isn't running. When you first start the car, it takes some time to get the fuel pressure high enough to get enough fuel into the engine. The fuel pump speed is a function of cranking voltage.
Lower cranking voltage - that's my guess.
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