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2001 PT won't start after spark plug replaced

 
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Old 04 Apr 2012, 07:53 pm
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Default 2001 PT won't start after spark plug replaced

Hi all first time here as I am trying to do an "easy" job on my girlfriends car. Changed all 4 plugs, 3 times, with different plugs (thought i had bad plugs so i've tried multiple brands) and new wires. The codes coming up on our OBD meter are misfire in cylinders one and four. the engine rocks like a bag of jiffypop popcorn. Thats pretty rough and almost dies immediately. Cylinder 1 might have been cross threaded by the last person who changed them because it was rough going in and out. I attempted to rethread it with the original plug I pulled out. It seems to sit well and the cap fits fine. I'm sorry if my terminology is nooby as I am not much of an expert by any means. Thats why I'm here to ask you all for help This has been a nightmare so please help with any suggestions.
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Old 04 Apr 2012, 07:59 pm
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Default Re: 2001 PT won't start after spark plug replaced

Here are the codes if that helps:
P0301 - Cyl. 1.misfire
P0304 - Cyl 4 Misfire
P0300 Random misfire

Thank you!
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Old 04 Apr 2012, 08:00 pm
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Default Re: 2001 PT won't start after spark plug replaced

check out these threads
P0303 Code - Tried Everything
New to forum, need serious help w/ Cylinder 2 and 3 Misfire
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Old 04 Apr 2012, 08:12 pm
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Default Re: 2001 PT won't start after spark plug replaced

Here's what I don't get. The car ran fine before I decided to change the spark plugs. I disconnected practically nothing. Changed the 4 plugs, 4 wires, and thats it. They had not been changed in years apparently.

I'm using autolite platinum plugs...should I be using copper? If I was sold the wrong plugs I will flip.
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Old 04 Apr 2012, 08:13 pm
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Default Re: 2001 PT won't start after spark plug replaced

Quote:
Originally Posted by WolfmanG View Post
Thank you for your speedy response! These seem to have happened after the car had trouble. Her car never had trouble. Ran ok, kinds sluggish. So Thats why the tune up.
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Old 04 Apr 2012, 08:23 pm
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Default Re: 2001 PT won't start after spark plug replaced

An employee at Kragen told me I should use copper plugs. I had NGK plugs on before, do not know what they are made of. Wanted ngk plugs again but they had none. I'm going to buy some later tonight and see if the car likes those better....I'm really at a loss here otherwise as to what to do.
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Old 04 Apr 2012, 08:45 pm
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Default Re: 2001 PT won't start after spark plug replaced

The platinum plugs should be just fine. The gap should be set to .040 on any plug use use. What happens if you put the old stuff back in?
Are you sure the plug wires are properly seated on the plugs and the coil?
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Old 04 Apr 2012, 08:45 pm
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Default Re: 2001 PT won't start after spark plug replaced

they say copper is a better conductor and if you have a gt then that's the only plug you should use. other than that, plat's or iridium would be fine
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Old 04 Apr 2012, 09:10 pm
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Default Re: 2001 PT won't start after spark plug replaced

Plugs seat just fine, snap in and all. I gapped them to .040 myself. Haven't put the old stuff back in because of that issue with the first cylinder. Tried the old wires though and no luck. Barely starts, then dies. Won't even idle.
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Old 04 Apr 2012, 09:43 pm
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Default Re: 2001 PT won't start after spark plug replaced

so the codes you're getting are p0301 & p0304?
well the tips in P0303 Code - Tried Everything sound pretty good to me
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