Hello, and sorry to hear of your troubles.
If it really is a rod knock, you are going to have to throw some money at it.
This is how I check for a rod knock.
With the engine running, I blip the throttle a little and quickly let it close.
As the engine RPM is going down, the knock will turn into kinda a fluttering sound.
Second test to do is remove the spark plug wires one at a time and see if how the noise changes when you get to the bad one.
If it really is a bad rod bearing, you should stop driving it. You may be able to fix it for a few hundred dollars. But if you keep driving it, It's going to leave you stranded, and you'll need another engine.
PS, and I rarely sling mud at other mechanics. There are always bits and pieces of the story that was left out.
Saying that, If you broke a timing chain, they should have never started that other work without checking the valves.
Monday, July 6th, 2009 AT 10:17 PM