re: OT Car Repair Gurus, Help Needed

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You can always contact Honda 

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I did with 2916 Nissan when my cvt failed last year at about 120,000 miles. Told them I was a long time Nissan owner and listed all the vehicles I purchased from them. They ate over half the cost of the repalcement transmission and labor. It's worth a shot.

Did you have the timing belt change at 105,000 miles or so? If not, you’re overdue anyway.

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So when the engine is assembled at the plant, the rings are staggered. So, over the years, the rings have kind of spontaneously migrated into alignment causing this problem. Shouldn't they eventually migrate back out of alignment?

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Piston rings rotate all the time, more or less constantly. I have read the rotation speed is 1-2 revolutions per minute so you will get the rings lining up on occasion. This is normal. Problems occur when the rings line up and lock in that position. Carbon packing and out of round cylinders are two examples of why this can occur. The only likely way to diagnose this in an assembled engine is to borescope the cylinder and see a wear pattern on the cylinder bore that is indicative of stuck rings. Again going back to what I said before about the transverse mounted engine and given this is the #3 cylinder it is against the firewall and would likely require an hour of "book time" just to get the spark plug out for inspection. I have no way of knowing what the dealership did or did not do.

It is likely the diagnosis is based on the symptoms fitting a particular pattern issue.


This could be a lot of things but the most likely issue for these symptoms in general is a bad coil over plug. In fact, again in general not this specific engine which I do not know, it is the issue 90% of the time. A bit of advice about coil over plug coils on a transverse mounted engine if you have to replace one on the firewall bank replace them all and ALWAYS use OE parts. Chinese coils are prone to failure and the back bank is a more harsh environment. Given most could on the front bank are quick and easy to access I will replace a single coil there.

Yes.
I have it on my 09 Odyssey.
The VCM system screws up the cylinders that are shut down.
The muzzler disables the VCM.
You'll lose 1mpg.
Pour a shiteload of seafoam or berryman in the crankcase and intake to try to uncake those rings.
Change to fresh oil.
The Odyssey forums have all of the info.
Super simple to install the Muzzler.

Could use a little thicker viscosity oil.

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I'm confused on why you think they need to be freed? What makes you think they are frozen in place? If so, how would they move to line up?

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Because it was the diagnosis from the dealership and direct injection engines are prone to carbon buildup and freezing the rings, causing oil consumption.

Plus, a couple cans of Berrymans and Valvoline Restore and Protect costs less than 1 hour of mechanics labor...just the labor. So why not. You arent going to hurt it by cleaning all that crap out.

I'd change the oil filter after 500 miles. That Valvoline is no joke, apparently.

To the OP, hope your latest works out for you. GL.