someones telling me without even looking at it he can say if i got a rattle (which im assuming is big ends??) then

"That will need work! If it's rattled an end theres a reason y it will need an oil pump 4 sure complete set of bearings thrust washers!"

anyone else got the same thoughts/facts or got another opinion on this? im thinkin if its big ends, check crank n get suited big ends…?