Ok Im at a complete loss here and need help asap!! I have a 02 runner with 110k miles on it. I decided to change the plugs and wires. So I bought some new wires and some NGK dual electrode plugs ones that is required to run in our engines. So I go through the install making sure that I do not cross the wires ect... So when I finish and double check everything I go to start it up and it is running like crap!! Misfiring like a mofo but no CEL. I double check the connections and make sure that I did not cross any wires and everything checks out. I then think that it may be bad wires so I swapped back the factory wires and still the same horrible misfire. What could be the problem?? Could the fact of moving the coils after so long have caused them to fail? Also I have seen that the gap on the plugs is supposed to be set to .044" according to this. 4Runners.org - Changing Your Spark Plugs However it also says not to gap them since they are pre-gaped. The plugs out of the box was at exactly .022" on each ground tip. Is that correct? I actually tried both gaps with no difference in fixing the misfire. As of now I am at a complete standstill as of what to do. I dont want to blindly buy coils that I may not need especially at the price they are. Any help would be greatly appreciated!!!
Need help!!!!
- Thread starter jab08
- Start date
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Baja Runner
Member
Well since you only touched your plugs and wires, then you're problem most likely rests in those 2 areas.
Are you sure all the wires are plugged in all the way? They should make a snap sound. Since you tried swapping back the stock wires maybe you have a bad plug.
Id probably try testing resistances across the plugs first.
Also did you possibly bump a vacuum hose? Check to make sure.
Are you sure all the wires are plugged in all the way? They should make a snap sound. Since you tried swapping back the stock wires maybe you have a bad plug.
Id probably try testing resistances across the plugs first.
Also did you possibly bump a vacuum hose? Check to make sure.
Well that is the problem then lol!! I was pretty sure I did not. Where did you find that diagram? All the diagrams I have seen says the firing order is 1-2-3-4-5-6.
Copied from another forum.
The one I got a Autozone says it's 1-2-3-4-5-6 and comes with a diagram as shown:
-----------------
| 1 _____ 2 |
| 3 _____ 4 |
| 5 _____ 6 |
This I guess is my problem lol!! Thanks Ill let you know in about 15 min.
Thank you!! I have no idea how I got it so backasswords.
PitbullRescuer
New member
Firing order and plug routing are two separate things. That diagram in this post is wrong because the it's backwards but even so, the plug routing doesn't dictate the firing order. Just FYI. It very well maybe 1-2-3-4-5-6, doesn't mean plug 1 goes to 2, 3 to 4 and 5 to 6.
SCRunner12
New member
I did the same exact thing. Felt like an idiot, but it all worked out.