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Car has been sitting for a while and runs ok when cold but won't restart

Tiny
BETHLM28
  • MEMBER
  • 1989 BUICK CENTURY
  • 108,787 MILES
1989 Buick Century Custom 3.3, car has 108,787 original miles, had been sitting for several months until sold about 1 1/2 months ago to me. Starts and runs fine when engine cold. I f I go back to start after it had been running will not start. No check engine light, starts fine when engine cold, if hot wont re start or left idling more then 10 mins will stall out not restart for 2 1 1/2h.
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Thursday, October 27th, 2011 AT 2:18 PM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
I would look at fuel pressure first. If it is ok, then I would have the fuel tested for contamination. Sitting around could have got some crap in the tank.

Roy
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Thursday, October 27th, 2011 AT 3:06 PM
Tiny
BETHLM28
  • MEMBER
  • 5 POSTS
Fuel supply is good, pressure. Starts fine if engine cold. Engine warm /hot no start, if left in park running more the 15 mins will die out? Possible choke thermostat? Upon looking at evaporator canister 1 line fuel into it, whats other line for or where should it be going? Its not attached to n e thing
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Thursday, October 27th, 2011 AT 3:21 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
What is the fuel pressure? You need a gauge to measure it as it may fall away when hot.

Roy
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Thursday, October 27th, 2011 AT 3:36 PM
Tiny
BETHLM28
  • MEMBER
  • 5 POSTS
Reading 40 then down to 36
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Thursday, October 27th, 2011 AT 4:18 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Did you monitor it at the time it stalled and would not start?

Roy
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Thursday, October 27th, 2011 AT 4:20 PM

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