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09-04-2019, 03:16 AM
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#1 |
 Drives: 2012 Yaris SE Join Date: Mar 2013
Location: SoCal
Posts: 32
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2012 Yaris SE Firing Order - Troubleshooting P0304 Code
Troubleshooting a P0304 code and wanted to verify the firing order is 1,3,4,2 with 1 being on the passenger side.
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09-04-2019, 08:07 AM
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#2 |
 Drives: 2010 yaris 3 door hatch Join Date: Jun 2013
Location: Sheboygan Falls, Wi.
Posts: 543
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Firing order & cylinder layout are two different things. #1 is near the belt & pulleys, #4 is at the opposite end.
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09-04-2019, 10:21 AM
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#3 |
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daily driver
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agreed, cyl 4 is on the transmission side, cyl 1 on the passenger/belt side.
best thing to do is swap the coil pack from 4-3 and the injectors from 4-2. see if the misfire moves or stays. they you'll know whether the issue is the spark plug, coil pack, or injector.
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09-04-2019, 05:40 PM
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#4 |
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Drives: 2012 Yaris SE Join Date: Mar 2013
Location: SoCal
Posts: 32
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Thanks for the clarification and info!
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09-04-2019, 08:28 PM
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#5 |
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Drives: 2012 Yaris SE Join Date: Mar 2013
Location: SoCal
Posts: 32
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Looks like the code cleared for a bit, but now it’s back. Going to swap the coil pack first and see what it does.
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10-24-2019, 08:07 AM
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#6 |
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Drives: 2012 Yaris SE Join Date: Mar 2013
Location: SoCal
Posts: 32
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Just an update swapped coils and spark plugs and turned out to be a plug causing the misfire.
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