2002 4.3 engine in 1998 blazer PLEASE HELP!
#11
The knock sensor threads into the block way back by the distributor. You have to drill in about 1/2" and thread the hole with the right size tap. I have a tap kit, but didn't have the right size. In the end my hardware store had to order it. I did this before installing the engine, good luck doing it with it in!
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