New Clicking Sound from Engine Update!
Reply #50 –
It does not eliminate the possibility of spark knock. Wire, plugs, and cap & rotor have nothing to do with spark knock, where the timing is set and weather the timing advance is working right is what causes sprak knock. Heat, carbon build up, stopped up convertors, and vacuum leaks also cause spark knock. The EGR tube on the back of the cylinder heads always has pressure in it, it is connected directly to the exhaust ports. Didnt you say that the noise is coming from the driver side of the motor? All of the EGR is on the passenger side. Im sorry if im being harsh but this has been going on so long, I dont think you're going to figure this out until you take it to a professional. Don't take it to a tune up shop, they most likely dont know what they're doing.