Is it possible for oil to leak due to faulty Knock Sensor

OIL LEAKING DUE TO KNOCK SENSOR

Its very rare for oil leaking due to knock sensor.

Common Causes of Car Oil Leaks?

Avenger Leaks oil while driving,mechanic suggested faulty Knock sensor ............

I doubt proper inspection is done, as per our garage repair experience,its very rare for such problem.



There's no way oil should be leaking from the knock sensor.

Why because?
The location of Knock sensor is under intake.
The knock sensor simply threads into a shallow hole in the engine block under the intake area.
And its a closed sensor.The end of the sensor isn't open, and there would never be any oil in the whole in the first place unless there was a problem with the engine block itself. If that was the case then the oil would be coming out from the sensor threads, not the sensor.
So first get the sensor threads inspected.If you notice oil getting accumulated there and then forming a leak,then its engine block issue,but not Knock sensor issue.Get help from another auto mechanic.


As per our car repair experience and dealing with such issues the problem in these case is the oil pressure sending unit.
Why oil pressure sending unit?

These has a reason!

• The oil sender threads into the back of the engine block.
• Like how knock sensor is close at its end the oil sender is open to a passage with pressurized oil to be able to monitor pressure. 
• Why will oil get into knock sensor with out any engine failure issue noticed,but Oil actually goes into the sensor and presses against a diaphragm to create the pressure signal. 
• As we at our auto repair garage have actually repaired and dealt with such issues.So on that basis i will say that, what actually  happens  is the diaphragm ruptures and allows oil to enter the sensor and then it will leak from the sensor's electrical connector. And these is what exactly happening in your case.

This isn't an uncommon issue.

Hope these details help you.

Thanks.

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Jeep Liberty Limited ENGINE PROBLEMS

Multiple problems starter after replacing engine.

2002 jeep liberty limited engine replaced by shop,after that noise started coming from A/C  system.

It can be heard under hood.Its a knocking vibration noise.

THE TROUBLESHOOTING FOR THIS PROBLEM IS AS FOLLOWS:---

Try this test get under the hood.

Grasp the A/C tube on the passanger side near the Evaporator which is near to the firewall.see if you notice the notice there.

It's very possible that vibration or knock from an a/c line or the exhaust after the engine replacement. Most probably the exhaust is not  adjusted correctly on the collectors and that is  hitting the frame and noise is heard, or issue with  trans crossmember, etc. If the flange in front of the muffler is misadjusted then it will cause the muffler to knock against the right rear lower control arm bolt, which is a great possibility in your case.

INSPECT THE A/C lines.The lines are very delicate to get bent.

The same goes for the a/c lines. They are soft aluminum and can be bent easily, and there is quite a bit of a/c line, wiring, and other components that have to be routed correctly under the hood or things will knock against each other.

.

If the noise was coming from the compressor then it would be a very fast knocking noise that only happened when the compressor was engaged, and it would come from the compressor itself. You shouldn't have a question if the noise was coming from the compressor.

In this case 

I personally recommend  taking it back to the shop that just did the engine work because it sounds like the exhaust and a/c line issues are going to be directly related to the work they did. 

at present the case is not worse,but can be a major issue.the noise you hear is the starting,but can increase in future and cause severe engine or A/c related issues.

This details will .

Thanks.

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Engine seized due to oil burning ?

Yes this problems are noticed.But engine getting seized is very strong problem.Engine is burning oil,in that case do you get any oil warning light on dash.


The 'low oil level' light is actually the oil pressure light. It does not warn you when engine oil level is low.

The engine should be able to be turned over by hand using a wrench on the crankshaft pulley. If it can be turned over then it is not seized.

If it can't be turned over by hand then you do have a serious problem.

If it can be turned then connections at the battery, starter motor or engine earth strap can all stop the starter working properly.And this issues can cause no start issues on car.

This details will help.

Thanks.

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