Hi, this is a question for my dad, his 2003 subaru outback, with about 25,000 miles, 4 cylinder auto trans, pings.
He changes the oil every 3000 or 3 months. The car has mostly short trips of less than a mile each way to work, but everyonce in a while he'll take a long trip and get it nice and warm.
It's been pinging for a good while now, not at idle, when under load. I understand this is a common problem, but he wants to know what the problem is. He changed the plugs (bosch), and it went away for a few days, but came back. The dealership also replaced the hydraulic lifters under warranty, but still pings.
any help or ideas are appreciated, thank you.
He changes the oil every 3000 or 3 months. The car has mostly short trips of less than a mile each way to work, but everyonce in a while he'll take a long trip and get it nice and warm.
It's been pinging for a good while now, not at idle, when under load. I understand this is a common problem, but he wants to know what the problem is. He changed the plugs (bosch), and it went away for a few days, but came back. The dealership also replaced the hydraulic lifters under warranty, but still pings.
any help or ideas are appreciated, thank you.