My '99 volvo s70 t5 with 132k miles is idling poorly causing the car to shake, and the mechanic who looked at it said I am not getting compression in cylinder #5. He recommends a valve job (not sure if it is the intake or exhaust valve but said 95% of the time that is the issue). The mechanic said they completed the compression test, and that is what told him it was cylinder #5. Cost is 3200-3500 for the repair.
Please advise as to whether this is the correct recommendation, and if the price is accurate. Given the age and mileage on the car, I am reluctant to invest 3-4k. Thank you!