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1999 pontiac sunfire

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johnny72
User

Sep 19, 2013, 6:26 PM

Post #1 of 5 (1735 views)
1999 pontiac sunfire Sign In
I have a 1999 pontiac sunfire with 153000 miles with a 2.2 engine. It starts great first thing in the morning. After I drive for a while, or it sits in the sun all day it is very hard to start. It turns over fine, but it takes several seconds to start. I replaced the gas cap thought the seal was worn out. Thank you for advice.


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Sep 19, 2013, 6:38 PM

Post #2 of 5 (1729 views)
Re: 1999 pontiac sunfire Sign In
Check engine light on? If so, what code(s) number(s) is stored?

Check the fuel pressure regulator for leaking by pulling vacuum line off and checking for the presence of raw fuel

You may need to check the fuel pump rest pressure to be sure your not bleeding fuel back to the tank. You'll need a fuel pressure gauge to check the pressure bleed off.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.


johnny72
User

Sep 19, 2013, 7:04 PM

Post #3 of 5 (1719 views)
Re: 1999 pontiac sunfire Sign In
There is no check engine light on, and no code shows up on my scan tool. I have not checked the fuel pressure, because it has no test port. Will I have to disconnect the line to do so and t into the line?


Discretesignals
Ultimate Carjunky / Moderator
Discretesignals profile image

Sep 19, 2013, 7:17 PM

Post #4 of 5 (1717 views)
Re: 1999 pontiac sunfire Sign In
Yes, you will need to T in a fuel pressure gauge on the supply line.





Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.


johnny72
User

Sep 27, 2013, 7:39 PM

Post #5 of 5 (1665 views)
Re: 1999 pontiac sunfire Sign In
I still have not got to test the pressure, but I do smell raw fuel when it finally starts. It only does this when it is hot outside, or the engine is hot and it sets for awhile.





 
 
 






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