Seeping oil from this sensor. Photos inside.

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2,131
Location
Maryland
Hi, It seems from the bolt that's holding the sensor, oil is seeping causing a coat of oil on the side of the engine. I was told that the O-ring under the bolt might be the culprit. What sensor is this and is there an o-ring that might be seeping under this sensor, if there is such one. I want to go to the dealer and buy the O-ring if it is the problem and need to know the exact name of the part. The vehicle is a '99 Nissan Maxima with 134k miles on the odometer. Thanks
 
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25,045
Location
ON, Canada eh?
It's an O-Ring I'm sure... Usually Japanese use this type of seal. When you get the new one, before you replace it spray it with a good penetrating fluid to make it stretch/fatten up a bit and then put it in. It will also help you put it in because it will be somewhat slippery. It shouldn't leak again.
 
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16,150
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Silicon Valley
 Originally Posted By: StevieC
When you get the new one, before you replace it spray it with a good penetrating fluid to make it stretch/fatten up a bit and then put it in.
Serious? Is the effect permanent?
 
Messages
25,045
Location
ON, Canada eh?
 Originally Posted By: PandaBear
 Originally Posted By: StevieC
When you get the new one, before you replace it spray it with a good penetrating fluid to make it stretch/fatten up a bit and then put it in.
Serious? Is the effect permanent?
Permanently tight fit with a great seal, stops the seal from hardening or cracking in futre... Works like a charm...
 

Spartuss

Thread starter
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2,131
Location
Maryland
 Originally Posted By: firemachine69
Now colour me wrong, but wouldn't removing the sensor throw the accuracy off?
Can someone confirm.
 
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989
Location
Iowa
If I recall correctly those sensors use a simple magnet to sense the position of the cam which generates a small electrical current via inductance. I don't think you'll throw your timing off, and the accuracy should be a moot point unless you have a bad sensor to begin with. If it were mine, I'd be tempted to just replace it anyway since it looks like you may have to take it out to replace that O-ring. Makes no sense to do essentially the same job twice IMHO.
 

Spartuss

Thread starter
Messages
2,131
Location
Maryland
The job is very easy as there is only 1 bolt holding the sensor in. If the sensor is functioning properly, I'd rather spend $2.50 on just the O-Ring from the dealer. Do I have to worry about oil pouring out when I take this sensor out or will it be on the bottom of the pan when the engine is off?
 Originally Posted By: Nyquist
If I recall correctly those sensors use a simple magnet to sense the position of the cam which generates a small electrical current via inductance. I don't think you'll throw your timing off, and the accuracy should be a moot point unless you have a bad sensor to begin with. If it were mine, I'd be tempted to just replace it anyway since it looks like you may have to take it out to replace that O-ring. Makes no sense to do essentially the same job twice IMHO.
 
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