Join Date: Feb 2009
Location: Bergen County, New Jersey
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Engine overheated. Could use some advise.
I just picked up a 2001 325ci convertible from my wife's friend. She told me the car overheated from a hole in the radiator, and the dealership told her the engine seized and that she needed a new engine...now the car is mine.
I did a compression test and i got (from front to back) 150/100/45/60/70/140. The car would not start. I cleaned the plugs and put them back in and the car started although it was a little difficult to get started. Once running, it idled pretty good, revved fine and even during power braking it ran smoothly and strong. Back down to idle it was a little rough but ran.
I had no anti-freeze or water in it to see if I was getting white smoke so i'm going to replace the radiator and run it to see what happens.
I'm curious to find out if anyone would have any ideas (although i understand that not being here makes it tough) what might be the problem here. Head gasket, valve job, cracked head, warped block or even possibly some buildup on the valves preventing them from closing all the way which is causing the low compression.
Any ideas or tests that i can do before i rip the top half off would be greatly appreciated.