I have been chasing an oil leak in my 97 Honda Civic EX for the past year. Here’s what I’ve done, where I am, would like your opinion. 97 Honda Civic EX with VTEC 4 cylinder developed oil leak at about 77,100 miles. Replaced O-ring, 77,122 miles, leak continues. Replaced Valve gasket cover and O-…

It sounds like no one is sure where the leak is. This is not good. If there’s oil on the ground you should be able to pinpoint where it’s coming from. How can it be constantly leaking but need need oil? Are you sure it’s the engine that’s leaking?

As I read it you’ve replaced parts in several areas of the car, which says you have not yet identified where the leak is coming from. It is somewhere near the front of the motor, that’s about all I can gather. Oil leaks travel, meaning the oil comes out one place and drips on the floor at another.…

There was a problem with the CR-V, which is built on the same platform as the Civic, with the oil filter gasket. The problem was that the old oil filter left part of its rubber gasket behind, preventing a good seal on the new oil filter. Since Honda put the oil filter on the back of the engine, th…

Thanks for response. When valve cover gasket was replaced, I had moved to a new city, mechanic cleaned engine, then up on rack to trace leak, said O-ring and valve cover gasket. When leak continued, 2,000 miles later I took it to to my mechanic of 15 years in former home city two hours away because…

When you change the oil, do you check the condition of the mating surface that the oil filter seals against or do you just swap oil filters? When was the last time you checked/replaced the PCV valve? With the way this leak spreads, I wonder if your PCV valve might be stuck.

Clean the engine bay well and put some dye in the oil-have the mech do this. Otherwise you might change many parts before fixing this. The problem is that at this age a littl seepage from seals is possible, but that would not necessarily mean that it is the source of the stains on the floor.

Other possibilities include cam shaft seal and oil pump shaft seal. Was the O-ring replacement at the distributor?

Honda Civic Oil leak

Maintenance/Repairs

Beadsandbeads April 6, 2009, 11:34pm 9

As others have suggested, the leaks could have been from all of those sources. Yes, replace the PCV valve too. It would have to be a pretty bad leak for me spend that much money on a gasket replacement on a car that is 13 years old.

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Honda Civic Oil leak

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