We love our engines
It was a Tuesday morning in February when a 2010 Audi A4 rolled into my bay on a flatbed. The owner—a software engineer who’d bought it used six months earlier—stood there looking like someone just told him his dog died. “It just stopped running on the highway,” he said. I popped the hood, pulled the … Read more
Quick Answer: An interference engine has pistons and valves that occupy the same space at different times. If the timing belt or chain fails, they collide—often destroying the engine. A non-interference engine has clearance, so a broken belt usually just leaves you stranded, not with a wrecked motor. Opening: The Day a Timing Belt Saved … Read more
Quick Answer Typical Cost Range: DIY: $200-$400 | Professional: $600-$1,200 Replacement Interval: 60,000-100,000 miles (check your model year) Critical Warning: Interference engine – belt failure = bent valves Opening: The $3,000 Lesson Rain was sheeting down on the shop bay doors that Tuesday morning when Sarah rolled in with her 2008 Mazda 3. “It’s making … Read more
Quick Answer For most Subaru models with the 2.5L engine (1996-2012/2014 for non-turbo), the subaru timing belt replacement interval is every 105,000 miles or 10 years. Because Subaru 2.5L engines are interference engines, a snapped belt will cause catastrophic engine damage, bending valves instantly. Professional replacement typically costs between $900 and $1,500, while a DIY … Read more
Quick Answer: Most manufacturers recommend replacing your timing belt between 60,000 and 105,000 miles, or every 5 to 7 years—whichever comes first. However, exact timing belt replacement interval varies significantly by make, model, and engine. Always consult your owner’s manual or a trusted mechanic to avoid catastrophic engine failure. The $3,200 Lesson I’ll Never Forget … Read more
Quick Answer: Most Toyota Camrys from 2002 onward (all 4-cylinder models) and 2007 onward (V6 models) use a timing chain that typically lasts the life of the engine with proper maintenance. Older models (1990-2001 4-cylinder and 1990-2006 V6) have a timing belt that must be replaced every 90,000-100,000 miles, or sooner under severe conditions. Always … Read more
Quick Answer: Replacing a timing belt is a complex but doable DIY job for intermediate mechanics. It requires precision, patience, and the right tools. Expect to spend 6-10 hours and save $500-$1,000 compared to a shop. Always replace the water pump, tensioners, and idlers at the same time. Introduction: A Mechanic’s Perspective It was a … Read more