Oil leaking from above Oil Filter

[dridas]

2006 Tahoe Q6S with a MerCruiser 5.0L - Serno: 0W380250
Started it up today after troubleshooting a "click no start or crank" problem. Replaced Starter, block fuse, circuit breaker, and slave solenoid. Cleaned all electrical connection on the starter circuit and anything connected to battery.

Ran for about 2 minutes with ear muffs, and noticed something leaking from transom drain hole, looked in the engine compartment and saw oil leaking from the oil filter, and thought it might just be a loose oil filter. I did just change the oil and filter. Upon further investigation I saw that the oil was leaking directly ABOVE the oil filter, from what appeared to be the oil pressure sensor, although there are multiple electrical connections there.

I was curious if one is more prone to breaking, and how difficult it is to replace the sender unit and oil pressure switch. Which components should I replace if I'm changing them out? Reviewing the link attached, I'm not real sure which I should be ordering.

Thanks in advance for your assistance and guidance.

 

[Bt Doctur]

43 is a pressure switch for the fuel pump circuir and has a plug end.
41 is the oil pressure sender for the oil pressure gauge , has a blue wire on it.
34 is a oil pressure switch wired to the alarm under the dash. activates when there is very low/no oil pressure

 

[Fun Times]

Hi there, Please know that I readjusted your link above to a working link from iboats vs someone else's​ per forum guidelines.

If a sensor seems to be leaking and it is not sensor "thread" related then my guess would be item number 43 (Switch, Oil Pressure) in the following parts link as I've seen in the past where the plastic sensor "seemed" to have split open sort of speak and leak engine oil. http://www.iboats.com/Electrical-Co...532246--session_id.127388363--view_id.1683185

But first be sure you didn't accidently leave the old O-ring filter on the engine as to where you may have double O-ringed when installing the new filter. If two O-rings are installed 'it will leak and could give an appearance that it's a sensor nearby due to oil spray.

 

[dridas]

Hi there, Please know that I readjusted your link above to a working link from iboats vs someone else's​ per forum guidelines.

If a sensor seems to be leaking and it is not sensor "thread" related then my guess would be item number 43 (Switch, Oil Pressure) in the following parts link as I've seen in the past where the plastic sensor "seemed" to have split open sort of speak and leak engine oil. http://www.iboats.com/Electrical-Co...532246--**********.127388363--view_id.1683185

But first be sure you didn't accidently leave the old O-ring filter on the engine as to where you may have double O-ringed when installing the new filter. If two O-rings are installed 'it will leak and could give an appearance that it's a sensor nearby due to oil spray.

When I first saw the leak I thought it was from the oil filter, which led me to tighten it, and once I did that I ruled it out. I'll double check the o-ring tomorrow, and report back- thanks for the insight - I'm actually hoping you are right.