Coolant in the Knock Sensor Pocket?
Thread Starter
Instructor
Joined: Apr 2004
Posts: 190
Likes: 4
From: austin tx
Coolant in the Knock Sensor Pocket?
Yes, that is what I discovered when replacing the front knock sensor. It threads into the top of the engine, in the thread hole is coolant, but there was no thread sealer or seal on the knock sensor. Pulled the back sensor as sanity check and it has no coolant in the thread hole and no seal or thread seal either. This sensor was wasted with corrosion from the coolant. I believe this is why it is bad. Please help with why there was coolant in the pocket.
Thanks
James
Thanks
James
Le Mans Master
Joined: Mar 2002
Posts: 5,955
Likes: 161
From: PNW
Yes, that is what I discovered when replacing the front knock sensor. It threads into the top of the engine, in the thread hole is coolant, but there was no thread sealer or seal on the knock sensor. Pulled the back sensor as sanity check and it has no coolant in the thread hole and no seal or thread seal either. This sensor was wasted with corrosion from the coolant. I believe this is why it is bad. Please help with why there was coolant in the pocket.
Thanks
James
Thanks
James
Thread Starter
Instructor
Joined: Apr 2004
Posts: 190
Likes: 4
From: austin tx
No not the cover. The cover is the pocket which was full of coolant. The sensor goes through the cover. There is a big rubber seal to keep the oil out, but where the knock sensor threads into has coolant on the front sensor any way.
Le Mans Master
Joined: Mar 2002
Posts: 5,955
Likes: 161
From: PNW
So the knock sensors screw into a coolant passage? ... must be if the knock sensor threads leaked coolant. I can't see why there would be any coolant near the knock sensor hole. Guess I'm not up on the layout.
