My son, who rarely bothers to check his oil, became alarmed driving home when his 626 LX 2.5L started making loud noises. Fortunately he was near an exit and imeadiatly stopped and brought the oil level up to full (there was none showing). The car then quieted some and he drove it about 100 miles home. I have checked it over and it starts and runs with a loud knock (sounds like a collapsed lifter) which then goes away (mostly) after a few seconds. I'm not familiar with this engine configuration but the cylinder pressures seem OK. Anybody care to hazard a guess as to the cause of the tapping and proscribe a cure. Left to my own I intend to drain the oil and replace it. Then drive it on short hops to see if things improve. I am also considering pulling the valve covers to see if I can detect anything amiss. Can anything be corrected without pulling the heads?
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