Chevrolet Oil Leaks

Chevrolet oil leaks are common, but not on my blazer with a trusted 4.3 Liter V-6 engine. I changed my oil this weekend, and to my surprise when I crawled under the engine was soaking wet. I thought to myself, this couldn’t be because my 2004 Chevrolet Blazer ZR2 only has 19,846 miles on her. I performed the oil change and dried up the area and then gave her short run.

Chevrolet Oil Leaks

When I crawled back under the oil pan was wet again. I was able to easily pinpoint the leak at the front timing cover. The 2004 4.3 L V-6 has a composite timing cover. This is one of the reasons that Chevrolet oil leaks are common. But I was very surprised with the extremely low miles on my blazer that even this weak area was leaking oil. But if you look at the picture above, you will see that this was no accident.

Why engines leak oil

Improper assembly at the plant caused this Chevrolet oil leak. You can clearly see that the industrial-strength RTV starts out with a nice thick bead and then it just completely disappears at the lower side of the timing cover. Me being a auto mechanic that worked at Chevrolet dealers for 20 years Read more