97 4Runner 3.4 Limited, Mis-Firing

[jwalk44]

97 Limited is mis-firing sporadically. I've tuned it up - plugs, wires, fuel filter. Dealer replaced coil packs and 02 sensors. Still not fixed. Any suggestions?

 

[Rix]

plug wires too?
what kind of plugs did you put in it?

 

[Yoterman87]

plug wires too?
what kind of plugs did you put in it?

if you have anything other than NGK's or factory in it that could be your problem especialy if you have bosch in it bosch plugs = fail in all toyotas:roadkill:

 

[acfyffe]

I had a misfire in my 98 4Runner, a bad one. Replaced the single electrode plugs (that should NOT have been in there in the first place) with NGK dual electrode plugs. Runs like a banshee now and raised the MPG from 14(ugh) up to 18+ now. Well worth the $30. I have already made that money back at the pump in two months.

 

[tjschmidt]

fuel injector

 

[4Running Daily]

This is what happens when a fuel injector goes out.

http://m.youtube.com/watch?feature=plcp&v=HgDpDfWnYwQ