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Misfire on cylinder one

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Old 12-14-2011, 06:30 PM   #1
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Misfire on cylinder one

My dads 2007 Toyota Tacoma v6 4.0l is missing on cylinder one. Have replaced injectors plugs and have moved the wires around too it is only missing on cylinder one. Any advice.
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Old 12-14-2011, 06:32 PM   #2
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Quote:
Originally Posted by Jaymes toy View Post
My dads 2007 Toyota Tacoma v6 4.0l is missing on cylinder one. Have replaced injectors plugs and have moved the wires around too it is only missing on cylinder one. Any advice.
next would be to check coil pack and MAF sensor
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Old 12-14-2011, 06:36 PM   #3
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Pull the plug for that cylinder. While it's out check the compression. If it's good, install new spark plug and swap coil packs with another cylinder. The miss should move to another cylinder if the coil pack is bad. Sounds like you've already eliminated the injectors. If there is no compression issue then maybe a wiring harness problem?

What fault code are you getting? I think an open injector or coil pack will set a code?
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Old 12-14-2011, 06:37 PM   #4
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first of all u dont have plug wires on an 07???? confused? and a maf would effect more than one cylinder so thats not it
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Old 12-16-2011, 11:39 AM   #5
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The codes

P0500
P0301
P0031
P0057
These are the codes that come up.
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Old 12-16-2011, 11:47 AM   #6
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Check the 10A EFI NO2 fuse.
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