Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Hello my name is ***** ***** thank you for your question.
What brand spark plugs are installed in the truck?
These engines only like NGK's. Those plugs can be causing your problem. These engines were designed to use NGK plugs. Any other plug can cause misfire issues.
So lets change all the plugs to NGK Platinum Plugs and see if that resolves your issue.
If you have any more questions on this, please feel free to ask.
If not, and you're satisfied with my help, please Rate me. That is how I get credit for my work. I hope I have provided you with Excellent Service.
Be prepared to be surprised.. You would not be the first that I have surprised by telling you this.
Well I look forward to hear back from you to hear how surprised you are...lol..
That is another question I answered where Autolites were used and NGK plugs resolved the issue. Just so you understand why I say to use the NGK plugs. I have seen this many times.
Not a problem. I am sure you will be happy with the results after changing the plugs.
Really.. I would have thought that was it. Did the truck have any major work done other than the tune up? Like a knock sensor or anything? Any codes?
Oh.. if you had a broken timing belt, you could be looking at some damaged valves causing the misfire. What you will need to do is have a cylinder leak down done to determine if there is any valves bent. When a timing belt breaks, 90% of the time it bends a valve.
Do you have any more questions on this?
I totally understand that. Trust me, I have seen it before. It runs great, but just has a little miss to it and it can sometimes come and go. It's because a valve is just slightly bent.
Are you a shop?
Do you have a Cylinder leak down tool? I can keep this question open so if you want to do a leak down on all 6 cylinders you can return and let me know the results.
Let me know..
You got it. I will keep this open and please keep me posted.
It is hard tobgo by the readings with out seeing some of them live.
You are running rich. Did you replace the Maf sensor?
I wonder if you have the rear 02 sensor wires crossed.
See if you can follow the Passenger side rear 02 sensor to the connector and tell me what the harness side connector wire colors are?