Quote:
Originally Posted by B-R-Z
I'm on original plugs too at 175K. I recently looked up the process and it looks like a PITA so I keep putting it off. It still runs/pulls fine so I'm going with the 'if it aint broke don't fix it' approach.
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wondering if this really is good advice. I had a car years ago in which I neglected the plug change interval. As the plugs became worn the gaps grew, apparently causing the coil packs to work harder. I gave the car to a workshop to rectify rough running and was presented with a bill for multiple failed coil packs, which weren't cheap. I was told this was due to the use of plugs let to run until out of spec.
It was still running / pulling fine right up to the point that it wasn't so I'm wondering if the "aint broke, don't fix" approach is right on this one.
The plug change interval on this car is 100,000km which is pretty high. They are called out to be replaced for a reason so suggesting that it shouldn't be done because they take actual effort to change is pretty dumb IMO.