Check engine light came on. 4th cylinder was misfiring, and the shop said replacing the spark plugs might fix it. First $400 spent. A week later, light came on again, this time along with low oil light. I was travelling: a different shop said my new spark plugs were fouled, and that the PCV valve also needed changing. That $500 repair got me home, when the problem happened again.

This time I was told that the head needed to be pulled and the cylinders re-bored. Two weeks and $1800 later and the vehicle is no longer misfiring, but it now makes a ticking noise that wasn't there before, and its burning oil like crazy (I have to add a quart every time I fill up, and it makes a blue exhaust cloud every time I start it).

Diagnostics say that the piston rings are bad. Fixing those would cost about the same as a new engine due to labor charges. I expect a Honda engine to last longer than 150K miles. My 2003 Pilot was going strong at 250K when my son totaled it. Don't know if I can trust Honda again.

hello,i have a Honda Pliot 06 i am just going to a bad rap now my car engine had a miss fire on cylinder 2 and 5 and on top of all that my piston is blown but i had a warranty 100000.00 what are the odds the expire because my engine just hit 100331 they would not honor it they saying it cause by the spark plug for real there something on this engine there are not telling us i made so much research that i was maze with the complain i saw and this is why i am responding to you ,and now i have no car and i can not afford a engine right now i am taking them to a small claims and bbb and anything that i can out them out there for selling a car that there is a problem WITH THE ENGINE but there are not admitting to it I NEED SUPPORT ON THIS SO I CAN HAVE A LEGIT CASE .

Update from Sep 17, 2013: has anyone had a problem with a Honda pilot engine 2006 with there motor i did and i invested so many hours i call the BBB THEY said my case is to weak to call NTHSA they found nothing of compliant with this engine and then i went to the federal government consumer compliant and nothing my next thing is My attorney general it seems to me that even know customer that has problems with this type of engine were never compliant to any of this people see so many issues online with this engine i need your help i bought a car 2 years ago and i own on it 13500 i can not pay for a engine that i did not broke and my engine blow because of the blown spark plug please email me so we can sign a petition and send to this people so they can notice of this problem they getting away with this for long time it time to compliant my email is bhm1104@yahoo.com

ATTENTION!!! All Pilot/Oddy/Ridgeline/3.5 V6 Honda Owners..Check Your Plugs and Coils

Just wanted to get the word spread around there is a serious issue with the Honda 3.5 V6 engine which can lead to serious damage to the cylinder head and possibly the entire engine.

I didn't learn of this until recently, when the spark plug in the #5 cylinder shot out of the head and destroyed the coil, and trashed the threads. I found a bunch of different people this has happened to, and all of the results aren't good.

The extended warranty which was through Honda Care denied my claim because they said it was damage from the spark plug and they don't cover spark plugs. What a load. If they want to play that game, what the heck would they ever have to cover? Sorry sir, there's a short in your electrical system but it's because of the insulation in the wires and we don't cover damage from the insulation... grrrrrr... So I called Honda and we'll see if they can do something for us as loyal Honda customers - I even mentioned that we've got a Honda CRV... sigh... Honda has a duty to manufacture and sell safe vehicles and to fix or pay for safety defects in its vehicles.

Instead, Honda has refused to acknowledge any responsibility for the alleged defect and forced its customers to pay for the repairs out of their own pockets.