Engine petcock question

[Case1951]

I installed a new petcock on the engine block of one of my VAC Cases. After tightening I opened the valve to make sure it worked, then after closing, I notice a little residual antifreeze on the threads of the petcock. It's not dripping steadily like the old one but you can see a little green halo on the rings. I thought this was likely fine but wanted to check, would you buy another in this case and start over?

 

[scootergmc]

So it's leaking past the threads? Did you use thread sealant?

 

[Tgrasher]

Get something to catch antifreeze and open and close several times. Could be a speck of crud, could be a bad seating in the petcock wait and see if it remedies the leak..

 

[Case1951]

So it's leaking past the threads? Did you use thread sealant?

Light pool of it on the threads, not dripping off and doesn't appear to be growing any bigger with time. Did not use sealant this time, I realize I should have

 

[gmccool]

Take it back out and put sealant on the threads. Problem solved.

 

[BarnyardEngineering]

Light pool of it on the threads, not dripping off and doesn't appear to be growing any bigger with time. Did not use sealant this time, I realize I should have

Your initial post says "It's dripping steadily." Everything else indicates you meant to say, "It's NOT dripping steadily." Is that the case?

 

[Case1951]

Your initial post says "It's dripping steadily." Everything else indicates you meant to say, "It's NOT dripping steadily." Is that the case?

I'm glad you caught this. It should read NOT dripping steadily. Just a small halo of green on the threads at the base.. Sorry

 

[Phill Tibbetts]

Tapered pipe threads should always have some type of thread sealant on them.

 

[Mike(NEOhio)]

I'm confused. The threads on the stem or the pipe threads in the block? Neither should lead when closed. A little around the stem when it's opened is OK. Whenever I put a new one in I'll put a dab of solder where the wings meet the stem. I've had a few that came loose at the crimp.

 

[Case1951]

I'm confused. The threads on the stem or the pipe threads in the block? Neither should lead when closed. A little around the stem when it's opened is OK. Whenever I put a new one in I'll put a dab of solder where the wings meet the stem. I've had a few that came loose at the crimp.

Correct- the threads on the stem. Sorry I wasn't more clear. It's like a little green halo at the base of them, so not actively dripping but I'll try some thread sealant