The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Think I've found the oil leak-- 1986 350 SBC

Blue82Chev · 03-30-2004, 11:26 AM

The sending unit is basically in two pieces. The first is the 45 degree elbow and the second is the cylinder like canister in which the wire hooks up to.

You will want to unthread the ton canister from the elbow and in turn it will give you the clearance to tighten up the elbow. I would actually take it out and put some thread tape or goop on the elbow.

This is the way my sending unit is on my 82' 350. I don't know if it is similar on your 86'

Something I just thought of is that it could be the back of your intake maifild leaking. Those gaskets between the mainfold and the block love to leak after time due to so much expanding and contracting.

03-30-2004, 11:26 AM	#2
Blue82Chev Murph Join Date: Jan 2004 Location: Central Minnesota Posts: 206	The sending unit is basically in two pieces. The first is the 45 degree elbow and the second is the cylinder like canister in which the wire hooks up to. You will want to unthread the ton canister from the elbow and in turn it will give you the clearance to tighten up the elbow. I would actually take it out and put some thread tape or goop on the elbow. This is the way my sending unit is on my 82' 350. I don't know if it is similar on your 86' Something I just thought of is that it could be the back of your intake maifild leaking. Those gaskets between the mainfold and the block love to leak after time due to so much expanding and contracting. __________________ Mike Vehicles: 1982 C20 2003 GMC Sierra