Very true. My '91 Camry 4 cylinder went 248,000 miles before an exhaust valve burnt causing no compression on cyl #3. I never adjusted them, and my in-laws sold it to us in 1999 before that required maintenance mileage was met. Long before it burnt, the car was very quiet, because there was no lash in the valves. I pulled the head myself, had a machine shop go over it, bought 3 new shims and got her running again. 65,000 miles later and all is well.
Since I like my current vehicles and they don't look outdated, and I like messing with them for the most part. I would say the time to get rid of them is when you get tired of driving them or rusted out frames/uni-bodies that would make them unsafe to drive. I remember having a '83 Olds Cutlass that looked great. But when the engine locked up from what I believe was that Teflon engine restorer stuff (forgot name, and the oil filter was plugged after), the used replacement engine made the same car feel totally different for me. It was not the same car after that, but it appeared to be.
I've walked the lots looking, and not having a car payment while my vehicles are freshly washed and waxed shining in the sun, makes a brand new car seem unnecessary to me. My Camry should have been gone along time ago if it wasn't for me liking the car and doing pretty much everything on it myself. Having a car that you don't worry about at ALL is very nice thing
Over a month ago the dealership wanted $1200 to replace the entire fuel lines on my Impala and then the brake line blew out in their parking lot. Now the car's CEL is off, and has been off for over 1200 miles, and I fixed the front brake line at home for $50 in my driveway. It still looks very nice today. 27.2mpg is a bonus too. I can put the $700 saved in 2 months on a new car into our porch remodel.
Originally Posted By: HerrStig
Originally Posted By: zach1900
How does one burn a valve?
If the valve "lash" is not properly adjusted and the exhaust valves don't close tightly they can burn from exhaust leaking by, and if a cylinder is running lean because of a clogged injector that can burn a valve as well. The OBD II monitor may detect the lean condition but not a loose exhaust valve unless the engine starts to missfire. The Camry I4 will generally go hundreds of thousands of miles before needing a valve lash adjustment.