LOW OIL PRESSURE. 2006 GRANSPORT. I THINK ENGINE NEEDS TO COME OUT.

philw696

Member
Messages
25,114
@Emtee Miles?
Yes he did. At Shiltech.
That's right I remember it well.
I was lucky with mine back in 2014 and took it on for a project as i was getting ready to go to NZ.
Planning to put an engine in i thought I would strip and investigate and the car is still going well in NZ as i know the owner in Wanganui.
 

Zep

Moderator
Messages
9,110
I get the feeling a few of you don't believe me but I think on here back in 2011 Miles had to have a major rebuild on his engine due to this failure.

I do completely believe you. I have seen loads of knackered senders and in at least 2 cases an issue with the earth strap giving low readings. Seems sensible to check for all of them, which I think our friend in Italy is going to do.
 

conaero

Forum Owner
Messages
34,593
Yes Phil I remember that and we have seen it too. The shaft drives both water and oil, the seal in the middle fails and rusts the shaft then it shears.
 

giorgio01

Member
Messages
223
For quite a while now, I've been worried about low oil pressure. First noted about 2 years ago, just under 1.25 bar (about 18 psi) at hot idle. Pressure sender was a bit flaky though, so it was replaced along with oil change 1 year ago. However, the new sender showed even lower pressure at hot idle, sometime briefly triggering low oil pressure light when coming to a stop at traffic lights. Following recent oil change using slightly more viscous oil 5W-50, oil pressure is even worse, typically dropping to zero at hot idle. However, no noise from bottom end and no valve train noise. Low oil pressure warning is now coming on sometimes with engine coolant temp of only 70 C. Oddly, on these occasions it will hold 2 bar for 10 seconds or more then suddenly drops to zero. When this occurs, there is a subtle change in engine or exhaust note. At 90 C with zero oil pressure at idle, if I stop the engine then restart, it can hold 1.25 bar for a while before plummeting to zero, again with a slight change in engine/exhaust note. I can't figure out why it does this. Oil pressure is relatively low across the rev range and this hasn't changed recently. I get 2.5 bar (about 35 psi) at 2000 rpm with engine hot. I had a local workshop do a direct pressure measurement: It showed 90 psi on start, steadily dropping to 18 psi at hot idle. After short road test, 18-25 psi when hot. Oil pressure responds well to rpm, maxing out at 75 psi. They noticed some air bubbles on the dip stick. Therefore, I think next step is to take the engine out to inspect lubrication system. If that's not the problem, then engine rebuild... For engine removal and reinstallation, is an SD2/3 needed? I'm thinking of having the local workshop do the job because the only Maserati independent mechanic here doesn't seem interested. The mechanics at the local workshop have worked with V8 supercars teams, and they are prepared to do the job.
Hi, did you ever found the problem?
 

giorgio01

Member
Messages
223
buongiorno, perdonami il problema, purtroppo ho il tuo problema, come l'hai risolto, grazie
[QUOTE = "Gp79, post: 659386, membro: 4294"]
Se non c'è rumore del motore quando si mostra la pressione dell'olio zero dovresti pensare solo a una lettura difettosa?

Se la pressione fosse davvero zero, il gioco sarebbe finito abbastanza rapidamente.
[/CITAZIONE]
buongiorno, perdonami il problema, purtroppo ho il tuo problema, come l'hai risolto, grazie
Did you ever found the problem?
 

Knight

New Member
Messages
1
Hello looking for some help. I have a 2006 gransport and I had it sitting for 16 months waiting to be able to refill the cambiocorsa fluid for the paddle shifts since one of the hoses that come out form the box has a tiny leak it finally leaked all out...etc. So I do the work on my vehicles myself but I have been backed up since I also have a 328, RRS, 911, and then the GranSport. to make a long story short I put some K44 fuel cleaner and charged the battery and it started up pretty well everything working AC blows cold I do have a low level light but I believe its for the cambiocorsa fluid, I am concerned though because the oil pressure gauge is showing very high pressure all the way to the right of the gauge at 70 psi should I be concerned or is this normal while the car is N and just warming up since I cannot actually drive the vehicle because the cambio box still has no fluid. Please give any thoughts and if anyone is wondering I will be putting in the cambio fluid soon as I was able to borrow a friends lift to complete the task tackling the leaky hose I am open to ideas. Thanks to everyone and anyone who takes the time... all the best!
 

DLax69

Member
Messages
4,179
Hello looking for some help. I have a 2006 gransport and I had it sitting for 16 months waiting to be able to refill the cambiocorsa fluid for the paddle shifts since one of the hoses that come out form the box has a tiny leak it finally leaked all out...etc. So I do the work on my vehicles myself but I have been backed up since I also have a 328, RRS, 911, and then the GranSport. to make a long story short I put some K44 fuel cleaner and charged the battery and it started up pretty well everything working AC blows cold I do have a low level light but I believe its for the cambiocorsa fluid, I am concerned though because the oil pressure gauge is showing very high pressure all the way to the right of the gauge at 70 psi should I be concerned or is this normal while the car is N and just warming up since I cannot actually drive the vehicle because the cambio box still has no fluid. Please give any thoughts and if anyone is wondering I will be putting in the cambio fluid soon as I was able to borrow a friends lift to complete the task tackling the leaky hose I am open to ideas. Thanks to everyone and anyone who takes the time... all the best!
May want to start a new thread...but welcome! And yes, the oil pressure will be high until the engine warms...and then later when you put your foot to floor in third gear and the rear end breaks just a little but gets back in line and...

Sorry.

So, yes. High at start.