Hi

Let me start by saying I am new to posting and to the forum so I apologize in advance if I post in the wrong spot or ask something that was already answered. Also I am looking for advice not so much the how to because I know my limitations.

I have a 97 SR5 V6 4runner. It’s my baby I love it I have 268K on her and want to keep her running.

My problem is this idling rough and seems to be misfiring. I brought it in to my local mechanic and they replaced two of the coils a year ago then a month ago it starts doing the same thing bring it in to a different mechanic and they replace another coil. (Do I understand correctly that there are three total on the right bank.) A week later check engine light is back on and just running rough. I don’t know what to do have not brought it back in yet.

Could this have anything to do with the timing belt or an oil leak from the cylinder covers? Any advice or suggestions would be great.

Thanks

 

You'll need to post more info. What did the CEL code say?

 

sparkplugs replaced(at least checked) at any point during this?