1999 Chevy LT 1500 won't start unless starting fluid is sprayed into intake. Truck runs fine until shut off. What's the cause.

Asked by Feb 14, 2015 at 12:07 PM about the 1999 Chevrolet Silverado 1500

Question type: Maintenance & Repair

Truck runs fine after starting with ether. In order to restart truck after motor shutdown, I have to use starting fluid.  Is it the fuel pump? If so, why does it run without any codes or malfunctions until motor is shut off.

1 Answer

63,235

Sounds like the fuel system is losing pressure once you shut it off. My '03 S-10 Pick Up does that. Try this, turn the ignition on but don't try to start it. Wait 5 seconds then turn the ignition off. Then immediately try to start it. If it fires right up you're losing fuel pressure. Most likely cause is a dying fuel pump. There's a check valve, incorporated into the fuel pump module, that wears out. HTH. -Jim

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