Jaydeep

My wife's 03 civic LX is burning lot of oil. There is no leak but after 3000 mile when I check oil its below lower oil mark. When I do oil change only 1 1/2 qt oil comes out. Also on local driving gets only 27 mpg but on highway gets 37 mpg. NO check engine light no oil light.
Can you guys tell me what to look for? What might be problem?

It Wasn't Me

Any blue smoke coming from the exhaust?

What do the plugs look like?

Checked/replaced the PCV valve?

How many miles on the engine? Rings could be shot.

Have you done any kind of troubleshooting? Leakdown test?

Jaydeep

Any blue smoke coming from the exhaust?
There are just little more smoke then normal but no blue smoke

What do the plugs look like?
I will take picture. But when I pulled last time there was no oil on the plugs. What else should I look for?

Checked/replaced the PCV valve?
I will check PCV valve this weekend

How many miles on the engine? Rings could be shot.
110k we bought it with 80K and same problem since then.

Have you done any kind of troubleshooting? Leakdown test?
How do you do Leakdown test? I will try to search

motegicivic

only 1 and 1/2 quarts comes out? I hope you are checking the oil before that time?

Do a compression test dry, then squirt a little oil each cylinder if the compression goes up chances are rings.

bb0ipn0y

This is the same problem I'm having. Compression test came up negative for me. So chances are its the rings?

mpegripper

compression would be low on the piston that has a shot ring

motegicivic

Basically you do all 4 and should have a guideline of what are good numbers, if one or more cyl. are much lower than the others that is the problem.

You can also do a leak down test, it is a little more involved.