The tenth generation Civic throttle water pipe leaks.

This tip is still a sealing problem. If you drive too much, the carbon deposit will come back and the throttle seal may come back. Carbon deposition can also be blocked, but it is still a problem of disassembly and cleaning. It has nothing to do with oil ~ the hose leaks ~ Another way is to buy high-temperature molybdenum disulfide spray, which should be removed to wash the throttle valve and wash off the coating ~ spray it on the edge and shaft ~ open it several times ~