Scenario . . .
Nissan comes into the shop with a seeping/leaking head gasket
Shop prepares estimate for retorquing the head bolts. And the shop tells the customer in writing there is no guarantee this will actually work. Customers signs this understanding, and agrees to the repair
Shop retorques the head bolts . . . who cares if they were loose or not, that’s not the point here . . . and replaces the valve cover gasket
Shop cleans off all residue and corrects all fluid levels
Shop leaves car idling for a few hours. No signs of seepage/leakage seen
Customer is told to pay bill and pick up car
Customer picks up car
Customer returns in 1 month, with murder in his eyes. Head gasket is once again leaking.
Customer either doesn’t care that they signed the understanding, that the retorquing might not fix the problem
Or customer denies signing this understanding
When presented with his signature, he claims it’s a forgery
The only thing going through customer’s mind is “I paid money, and they didn’t fix the problem.”
Imagine what’s going to happen when the shop tells the customer that they’ll have to replace the headgasket, for a large sum of money
When the shop tells the customer “Sir, we retorqued the head bolts, thinking it would fix the leak. It didn’t work, now we have to replace the headgasket, in order to fix the leak” . . . the customer’s response will be “You told me it’s going to cost x amount of dollars to fix the problem. Your fix didn’t work, and now you’re telling me it’s going to cost a lot more, to fix the problem. What kind of shop are you?! You guys obviously don’t know what you’re doing”
Rest assured, whether the customer goes for the headgasket or not, he will not be a repeat customer. And he’s going to badmouth the shop to his neighbors, friends, relatives, churchgoers, etc.Odds are retightening the bolts would have stopped the problem
Do the job the right way, the first time . . .