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missin in one cylnder whats causin this

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Old 03-21-2010, 06:34 PM
  #1  
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Default missin in one cylnder whats causin this

i have a slight miss in cyl. number 3 up until around 2500 rpm ive got new plugs and wires checked the dizzy i dont know what else to do besides pull the head and see if i slightly bent a valve but i would think it would run like shit all the way through the power band any ideas
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Old 03-21-2010, 06:52 PM
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Default Re: missin in one cylnder whats causin this

Originally Posted by 757GRIZZLY
i have a slight miss in cyl. number 3 up until around 2500 rpm ive got new plugs and wires checked the dizzy i dont know what else to do besides pull the head and see if i slightly bent a valve but i would think it would run like shit all the way through the power band any ideas
I'd probably pull the head just to be safe and make sure everything's good, but that's up to you.
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Old 03-21-2010, 10:33 PM
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Default Re: missin in one cylnder whats causin this

Sounds like a sensor problem. The fact that it gets better with higher RPM instead of worse rules out a lot of things.
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Old 03-22-2010, 09:40 AM
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Default Re: missin in one cylnder whats causin this

the o2 senser was throwin a code but not anymore would that effect one cylander
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Old 03-22-2010, 10:05 AM
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Default Re: missin in one cylnder whats causin this

take the distributor cap off, is there red dust? Changed the plugs and wires/cap/rotor ever?
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Old 03-22-2010, 10:28 AM
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Default Re: missin in one cylnder whats causin this

How do you know it's one cylinder? Are you getting misfire codes?
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Old 03-22-2010, 11:03 AM
  #7  
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Default Re: missin in one cylnder whats causin this

you can hear a missfire
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Old 03-22-2010, 11:22 AM
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Default Re: missin in one cylnder whats causin this

Originally Posted by Fabrik8
How do you know it's one cylinder? Are you getting misfire codes?
i looked at it the other day and its cyl. 2 that has the miss, its only at idle and low rpm and clears when revved, not ignition breakdown or spark related, also not fuel or bad injector, i haven't done a compression or leakdown test yet tho
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Old 03-26-2010, 10:04 AM
  #9  
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Default Re: missin in one cylnder whats causin this

Originally Posted by 757GRIZZLY
you can hear a missfire
Originally Posted by patrickr86
i looked at it the other day and its cyl. 2 that has the miss, its only at idle and low rpm and clears when revved, not ignition breakdown or spark related, also not fuel or bad injector, i haven't done a compression or leakdown test yet tho
Are you the same person?
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Old 03-26-2010, 10:37 AM
  #10  
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Default Re: missin in one cylnder whats causin this

no haha thats my boy
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