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Old 08-11-2014, 08:43 PM   #1
Kmac81
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Angry 2000 blazer hard start after sitting or humid??

Hey guys i am looking for some answers. My blazer was running like crap got a po300 code. I did a tune up ran great for 3 months....then started hard starting when humid. So i changed EGR and Coil. Ran great for 3 days started same crap again.....getting frustrated. normally after cranking a bit it would eventually fire. This time however it will not. any ideas? I hear the fuel pump running....seems like a spark issue where do i go?
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Old 08-12-2014, 07:22 AM   #2
Tech II
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Re: 2000 blazer hard start after sitting or humid??

What did the tuneup include?

Is it hard starting more cold than hot?
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Old 09-29-2014, 09:04 PM   #3
Rick Norwood
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Re: 2000 blazer hard start after sitting or humid??

Quote:
Originally Posted by Kmac81 View Post
Hey guys i am looking for some answers. My blazer was running like crap got a po300 code. I did a tune up ran great for 3 months....then started hard starting when humid. So i changed EGR and Coil. Ran great for 3 days started same crap again.....getting frustrated. normally after cranking a bit it would eventually fire. This time however it will not. any ideas? I hear the fuel pump running....seems like a spark issue where do i go?
http://staticaf.com/vbulletin/images...s/banghead.gif
Did you replace the Distributor Cap? P0300 Codes are almost always in the Dist Cap. Replace your cap with an AC Delco Cap only.
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