Oil leaking through the oil sensor.

[dlogvine]

I purchased a new oil sensor for my 1993 mercruiser 4.3 v6. I used teflon tape when I screwed it in. When I turned the engine I notice a significant leak in the engine compartment. I looked for the source of the leak and found out that it is coming from the oil sensor. Could it be a bad sensor or I am not tightening it completely? I tightened it up a little more but no results, leaks as it was.
The sensor was purchased on ebay
https://www.ebay.com/itm/272865067737?ViewItem=&item=272865067737
Should I buy another one or is there anything I can do to fix the one I purchased?
I can try to put a plug bolt to see if the leak will remain.

 

[Scott Danforth]

Go to Napa and buy a non-china non-ebay sender for less money

 

[Grub54891]

Clean up the block, start motor and look at the sensor, if it's leaking at the threads, you will see it. If it's leaking at the metal to plastic housing, it's a bad crimp. Get a good one as Scott said.

 

[Bt Doctur]

If its for the oil pressure switch for the electric fuel pump, try Standard auto parts

 

[dlogvine]

Cant see where it leaks exactly, too little space, however i saw the only place where the oil was leaking, and it was not dripping but flowing pretty fast, was along the stem of the oil pressure switch. Took it out and looked, most likely it is leaking along the metal to plastic crack. Will get a new oil pressure switch tomorrow, both autozone and napa has one, but at far located stores.

On3 more question, out of the topic, but hopefuly somebody could answer it without starting a new thread. When i ran the boat yesterday on the lake, the throttle lever was not working well, the release button was stuck and also the engine was kicking like a horse when i shifted the lever from neutral to forward or reverse. I took apart the lever today, fixed the release button, was a return spring dislocated. I put plenty of crease inside the asembly, however was not able to figure out what was causing such a hard shifting. Any ideas? Thank you

 

[alldodge]

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The most probable cause is the lower shift cable. Could try and adjust it first, but if its very old, it would need to be replaced

 

[Silvertip]

A leaky oil pressure sender MUST be repaired immediately. Once the plastic body separates from the metal shell you will dump oil at 40 - 60 PSI and it will fill the bilge and cover the engine with a mess in very short order. When installing this sender do not twist on the plastic. Use the proper wrench on the metal body.

 

[CraigBarnard]

I would buy one from the dealer. Have had too many aftermarket ones fail repeatedly.

 

[dlogvine]

Bought one in the NAPA autoparts, exactly the same as I had. No leaks, problem solved. Thank you!