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1999 Chevy silverado starts first time in morning cranks for a few seconds before it starts the rest of the day What is up?
Wiki User
∙ 14y ago
I would bet money on a defective fuel pressure regulator. This year Silverado uses a fuel rail mounted regulator that is referenced to manifold vacuum with a short plastic line. The internal diaphragm leaks and allows gas to be pulled through the vacuum line into the manifold. The extra doesn't matter in the morning, as the cold engine can burn the extra fuel. Once it's warm, it's too rich to fire until all the extra fuel is cranked through. Pull the vacuum line off the regulator (driver side - middle of rail) - if it's wet with fuel, you've found your problem... five minute, approx $50 fix.
Wiki User
∙ 14y ago
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