2001 Tacoma 4WD 2.7 liter engine
, with slowly increasing loudness of rod like tapping or knocking sound. Began 6 months ago as very intermittent, like noticeable every few days, and lasting 20 minutes or so. In the past month it's present most of the time, but it's not the type that goes away once the piston heats and swells. It actually comes on more often when the engine is all warmed up. Mechanic said is was probably gudgeon pin bearing and that I need a motor swap for $4,000. Question: how to accurately diagnose this knocking?
JA: Where exactly do you think the noise is coming from? And how long has this been going on?
Customer: Front of the engine, near the fan part of the block.
JA: Are you fixing your Tacoma yourself? What have you tried so far?
Customer: Not fixing myself. Need an accurate diagnosis before I'm willing to spend $4k.
JA: Anything else you want the mechanic to know before I connect you?
Customer: How do TM consults work?