ok 95 GT, 131,000miles, ever so slight tick for the past 5 years. i change the oil pump and now i have a loud ass tick that makes my car sound like some hoopty thats barely alive. i put a screwdriver to the head and found that the noise SEEMS to be coming from there, the drivers side being louder. transmission has been rebuild, clucth is about 3years old, timing belt looked good and is not very old.....is it the old yota tick or spun bearing for some reason