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Old 03-27-2010, 12:47 PM
ntty1 ntty1 is offline
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firing order on f150 4.6 1999

can u tell where the # 3 plugs at on what side of truck
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Old 03-27-2010, 01:31 PM
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this is the 2009 and newer forum. This should really be in the 97-03 forum. But to answer your question, #3 is on the passenger side, third one back. For future reference, when you open the hood and are looking at the motor (on a V-8) the cylinder closest to you on your left is #1. Behind that is #2, 3 and 4. On the right is #5, 6, 7 and 8. Pretty simple. The same strategy holds true for v-6 and v-10s as well. Inline motors are pretty self explanatory. #1 in front and go back from there.
I assume you are asking this question because you fouled a plug or coil on plug. If so, remember to put anti-sieze on the new plug threads. If the plug doesn't want to thread, don't force it. You have aluminum heads and they can cross thread easily. If the motor shot the plug out and destroyed the coil on plug, you need to take the truck in and have a professional install a helicoil.
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Old 03-27-2010, 04:26 PM
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code po303

thank for info im going to change spark plug i'm getting code po303 i changed spark coil truck still acting up
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Old 03-27-2010, 05:17 PM
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loose #3 plug

found loose spark plug # 3 install new plug truck runs great
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Old 03-27-2010, 07:52 PM
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That's the kind of fix we all like to find.

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Old 03-27-2010, 09:13 PM
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150, 1997, 1999, 2003, 46, 99, cylinder, engine, f150, firing, ford, motor, order, truck, v8

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