start problem when the engine is warm

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start problem when the engine is warm

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Chevrolet Forums >> Brand Review >> Computer & Fuel Systems >> start problem when the engine is warm

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start problem when the engine is warm - 2/27/2007 3:19:46 PM

bjoern

Posts: 1
Joined: 2/19/2007
Status: offline

I have recently bought a Chevy suburban 2000 with a 5,3 L vortec engine.
The engine starts easily when it is cold, but it is very difficult to start when it is warm. Its also smells a lot of gasoline when it starts warm.
Can it be something with the cold start system? Any body knows?
Bjoern

Post #: 1

RE: start problem when the engine is warm - 2/27/2007 6:45:41 PM

shnormo

Posts: 204
Joined: 2/11/2007
Status: offline

Sounds like vapor lock. Fuel evaporates when it's hot and it won't pump. So you might have a bad fuel pump or fuel filter or fuel regulator. So start with an intank fuel system cleaner and see if that helps.

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(in reply to bjoern)

Post #: 2

RE: start problem when the engine is warm - 2/28/2007 9:06:01 AM

golfer

Posts: 610
Joined: 10/8/2006
Status: offline

I would also agree with shnormo about checking the fuel regulator.

It could also be the temperature sensor is faulty thinking the engine is cold....it sounds like it may be too rich if you smell gas.

Do you have a Check Engine light on ??

(in reply to shnormo)

Post #: 3