cylinder 6 misfire - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 12-25-2010
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Icon9 cylinder 6 misfire

Ok guys, I have a miss on cylinder 6. I pulled the spark plug and it looks greeny yellowish. I checked to see if i had spark and It does, I replaced the spark plug and it's still missing. It shakes the truck pretty good at idle too. I'm thinking it might be the injector. Also are the injector all the same on the 3.0, like can I take one of my 98 and see if the will work on my 06?

What do you guys think
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Old 12-25-2010
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check the the injector with an ohm meter. check the other ones for a reference and see if the resistance is lower or higher on cylinder 6 injector. if it's a short to open, it wouldnt function. if you get a reading of infinity your injector is bad forsure.
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Old 12-28-2010
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I had a misfire code on my 1994 3.0 last spring and it ended up being a cracked spark plug wire........you may want to check it.

i found the problem while truck was idleing and jiggling the wire....and got a nice Zap.....that wasnt fun.
Just an idea.....
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Old 12-28-2010
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Quote:
Originally Posted by Grumpy View Post
Ok guys, I have a miss on cylinder 6. I pulled the spark plug and it looks greeny yellowish. I checked to see if i had spark and It does, I replaced the spark plug and it's still missing. It shakes the truck pretty good at idle too. I'm thinking it might be the injector. Also are the injector all the same on the 3.0, like can I take one of my 98 and see if the will work on my 06?

What do you guys think
When you pulled the #6 spark plug, was the plug wet or dry? A wet plug indicates that fuel is getting in there, and to troubleshoot the electrical side ( bad plug, faulty wire, or coil pack malfunction). A dry plug indicates an injector issue. You can easily swap out the #6 injector with a new one.

You may be getting spark, but the coil pack may not be sending the electrical current on proper time. The cheap and easy way to check this is to replace the plugs and wires (might as well if they haven't been done for quite some time). If it's still running rough, and the plug is wet, proceed to swapping the coil pack out).

Hope this helps.

I'm speaking from experience. I had a code thrown at me regarding the #6 cyl too. Turned out it was my coil pack that went. I followed the troubleshooting advice from another member, and it helped. Now I pass that advice onto another member in need.
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Old 12-29-2010
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The spark plug was dry. I am going to swap out the injector and install new plugs and wires on thursday. Thanks for the in for rolldogg
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