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2006 chevy trailblazer_ls
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Hey guys I have an 06 ls 4.2l v6 that just passed 100k. I have my smog check coming up so I decided to give it a simple tune up. Car has been running fine so today I cleaned the TB entirely, swapped out all new spark plugs (disconnected battery throughout all this), cleaned and oiled K&N filter, cleaned the MAF sensor with MAF cleaner. Firstly I ran seafoam through the vacumm line smoke out clean idle dropped to 1500 rpms everyhing was fine. Then I poured the left over seafoam into oil and gas tank. Now the vehicle cranks fine isles for 1-3 seconds but then chokes and shutters off. Any ideas out there ?
 
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