Really Neat Oil Leak - Maserati Forum
 
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post #1 of 15 Old 12-09-2016, 12:18 AM Thread Starter

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Really Neat Oil Leak

Has anyone already dealt with this issue? My '09 QP5 Base has an intermittent leak of oil coming from the plastic ( ) pass-through connector in the oil pan where the wire goes to the oil sensor inside the oil pan. The attached picture illustrates. Front of car is to the left in the photo.

Is there a relatively easy way to replace the O-ring that is just inside the pass-through? The scary alternative looks extremely involved to me (the front sub-frame is in the way of the front half of the oil pan).

Season's Greetings,
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post #2 of 15 Old 12-09-2016, 12:51 AM
 
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Why don't you pop the circlip out and find out?
Looks easy enough....
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post #3 of 15 Old 12-09-2016, 01:22 AM
 
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The E clip keeps it from falling into the pan so you'll most likely need to drop the pan to remove it. Probably an oil level sensor, look it up and maybe you'll get an idea of how it's installed.

Joel

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post #4 of 15 Old 12-09-2016, 02:25 AM Thread Starter

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I did. You are correct, the wire from outside goes thru the pass-through, continuing some length to the actual oil level sensor. Parts catalog calls the pass-thru plastic connectors on both sides, an o-ring, the internal wire, and the sensor as one unit (part number) comprised of those 4 or 5 separate, internal pieces. The front half of the oil pan passes above the sub-frame cross-member. It appears that getting to the oil pan bolts for the front half of the pan would require dropping the sub-frame or detaching mounts and lifting the engine. There must be a simpler way, but I'm not seeing it yet.

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post #5 of 15 Old 12-09-2016, 02:37 AM
 
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+1 for me Sorry it didn't give you an easy way to fix it. Sadly, sometimes there is no easy way. My buddy did a radiator on a DB9, besides the usual stuff, he had to unbolt the fenders to get it replaced!

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post #6 of 15 Old 12-09-2016, 01:39 PM
 
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Garage
Replacing the c-clip is a very difficult job.
Here's a tool to make it easier. Hopefully the tool will fit in the space needed.https://youtu.be/uhJdQWljw0I
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post #7 of 15 Old 12-09-2016, 01:53 PM
 
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Quote:
Originally Posted by jack View Post
Replacing the c-clip is a very difficult job.
Here's a tool to make it easier. Hopefully the tool will fit in the space needed.https://youtu.be/uhJdQWljw0I
Wouldn't work, the sensor isn't threaded for the tool to attach. Besides that, why couldn't you use a needle nose pliers? That looked like way more effort and time than it's worth.

Joel

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post #8 of 15 Old 12-09-2016, 05:11 PM
 
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Maserati has a few of those C-clips in various places. They are the absolute worst. I'd rather spend 4 hours on an alternator replacement than the same amount of time trying to force one of those things on!

A universal solution would be a lifesaver. I'd order one right now.

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post #9 of 15 Old 12-09-2016, 05:18 PM
 
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Quote:
Originally Posted by ErikDiSomma View Post
Maserati has a few of those C-clips in various places. They are the absolute worst. I'd rather spend 4 hours on an alternator replacement than the same amount of time trying to force one of those things on!

A universal solution would be a lifesaver. I'd order one right now.
I'm quoting myself here because I just found some pretty decent circlip plier sets online. I'm getting one immediately. Thanks for reminding me!

Erik Di Somma
2005 Quattroporte
1989 228 (past)
1985 Quattroporte III (past)
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post #10 of 15 Old 12-09-2016, 06:48 PM Thread Starter

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Eric, could you provide a link to what you found?
Thanks,
KTBD

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post #11 of 15 Old 12-09-2016, 09:19 PM

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post #12 of 15 Old 12-09-2016, 10:06 PM
 
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Guys, that is not a C-clip or snap ring...That is an E-clip and be easily removed with a flat head screwdriver...Replacing the clip will do no good... You need to remove the oil pan and replace the sensor and o-ring..You`ll need to undo the motor mounts and lower the front subframe some...It`s not terribly difficult, but your gonna need a rack....Jason

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post #13 of 15 Old 01-10-2017, 11:38 PM Thread Starter

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Oil Level Sensor Fix Update -

It takes about 4 hours of labor to drain, remove, replace and refill, when done by someone who has done this repair before and who has the specialized jacking tool shown in the pic and knows just where to place it. The first pic illustrates. The jack stand touches the very front part of the engine.

a. Upon removing the two under-panels, the cross-member reveals two strategically manufactured holes to reach the oil pan bolts directly above the cross-member. First time I have ever seen design & manufacturing crews looking out for the repair crews.
b. The motor mounts have to be loosened some to allow the jack to move the engine upwards just enough for the oil pan to clear the cross-member. No need to lower the sub-frame.
c. The second pic is of the oil level sensor itself. The shiny part on the left bolts into the bottom of the oil pan. The red seal on the right is the culprit. It started out when new as an o-ring type of seal. Over time it became flattened to the same level as the pass-through shroud, causing the leak. I'm thankful the leak was intermittent. I never did figure out why it leaked sometimes rather than all the time.
d. Replacement of everything was straight-forward.

Observations:
a. I would hate to have tried this repair using only ramps. Need a lift. Others may be more intrepid than I.
b. Glad, so very glad, to learn that lowering the sub-frame was unnecessary.
c. My helpful Indy suggested he would try to save me some money by attempting to fish out the o-ring by taking it off its assembly from within the oil pan, without removing the oil pan. After seeing what the situation was on the failed part, I'm glad I declined his offer.
d. I asked the dealer service folks was I going to be back in there in another 30K miles for a second go, since the replacement seal material looked to me just like what came out (except it was an o-ring shape). I got a "I dunno" shrug as a response.
e. "That was easy." (Not.) My thinner wallet fits my back pocket better, though.

KTBD

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post #14 of 15 Old 01-10-2017, 11:41 PM Thread Starter

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Pix won't upload. Will keep trying.

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post #15 of 15 Old 01-11-2017, 01:35 PM Thread Starter

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Try this.
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