Hi guys we just got a 2011 Honda pilot last week for 6500 with 150k miles on it. It's in great shape but the seller said it needed oil change and spark plugs cause it had a small miss to it. It seems to happen when u take off and it gets to the 40mph range it will have a little bucking to it and then go away after the sfit change and drives fine and get about 70 it will have a spertice miss not all time just once in a while. I bought band new plugs just like what was in it and didn't change a thing which some of the plugs did look bad. So I thought maybe coil pack was bad cause I have a 08 fit and coil packs went bad on it and made it miss. So I bought set of 6 coil packs off Ebay and swapped the coil packs out and still has the same miss. So I'm out of ideas what the problem could be since both the coil packs and plugs as been change. Any one have any ideas? Theres no CEL on so makes it very hard to find the problem.

 

welcome to the forum. do a compression check, you can do this if you changed the spark plugs. it may also need a valve adjustment if it has never been done. i also have a 07 Fit, and had the same thing happen, spark plug electrode ng, and 1 coil pack bad. also changed out the cat. will look into what else may cause a miss fire like your pilot.

 

You would think if it was a valve it would do it all the time not just sometimes and at the point where it shifts around 30mp to 40mph and it will drive smooth and some times around 70mph it will putter 3 times and then drive fine.

 

that is correct on valve.