oil consumption

I've noticed that my CRV is consuming a good bit of oil. It doesn't appear to be a leak, as I don't see it on the driveway or signs of it on the outside of the motor. I also recently had to put in a new radiator and when I drained the coolant, I saw no signs of oil in it.

For the most part, I don't see any smoke coming out of it except if I really step on it and get the revs up high and then I see some smoke out of it.

So that leaves me with oil going through the motor and out the tail pipe. The two main areas I know of is oil leaking around the valves or the piston rings.

Does anyone know if there is a way to test to see which it might be? Swapping a head is one thing, swapping the whole motor is something else.

I'm going to try to get a compression test done, but I have a feeling that will just tell me there is a leak, but not if it's a head or a piston issue.

Any thoughts? Also, the motor has 140K miles on it, so it's not exactly new, but it's not a very high mileage CRV either.

Thanks!

Any sign of oil on the outside of the motor at all? Changed the PCV Valve lately?

How much is a good bit of oil??

You can probably take the PCV valve out, block the line from intake and put a breather on the valve cover.
At least that is where I would start.

If you do a wet compression test and still have low comp, then it points to the valves.

I've put a new PCV valve on it... helped a little in the MPG area... the old one was definitely not working. I'm looking at about a quart every 3 or 4 gas fill ups... say, a quart per 1K miles.

Tried a heavier weight oil, just for giggles? Maybe one round of Rotella could be helpful.

Quote:

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Originally Posted by OZMDD

If you do a wet compression test and still have low comp, then it points to the valves.

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It could be valves or springs too. I've seen premature spring failure on Hondas too. If vavle is not closing all the way, I'd definitely check springs too but won't find out unless you do a compression test and then pop it all open.

You might call Executive Imports in Garland and ask them. They pretty much work on Hondas only.