ouch. if you dare run the engine, maybe locate the exact position of the knock by using something as 'stethoscope'. but it's probably best to open it up and inspect whatever/whomever is knocking. running the engine could be damaging it worse, so maybe best not to start it again (?) . i wish i could imagine a way to surmise how the problem could be merely a bad $27 windshield washer pump, but i just can't do it, cuzy.
Answers
ouch. if you dare run the engine, maybe locate the exact position of the knock by using something as 'stethoscope'. but it's probably best to open it up and inspect whatever/whomever is knocking. running the engine could be damaging it worse, so maybe best not to start it again (?) . i wish i could imagine a way to surmise how the problem could be merely a bad $27 windshield washer pump, but i just can't do it, cuzy.