This is an intermittent problem. Sometimes when I go to start my truck, I will turn the engine over and when it fires up there are a series of 4 knocks and then it goes away. Each and every time it does it, it's four knocks. It usually happens after the engine has been sitting for the night. I took my truck to a mechanic concerning this "knock". I explained to him that it sounded like a lifter to me. I started up the truck to see if it would actually knock for him and did. He got this puzzled look on his face. He said that it didn't sound like a lifter to him. He said it sounded like front/rear main bearings or possibly the crank shaft, but he could tell which area it came from. What puzzled him is that it only "knocked" four times and then went away. After that, everything sounded perfect. Absolutely NO ENGINE NOISE WHAT SO EVER. He commented that the truck ran remarkably well.
have the same problem?
Sunday, May 4th, 2008 AT 2:32 PM