Oil Pressure - Has anyone had this problem?

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Brocky

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Katy TEXAS

19th Jul, 2010 at 04:32:37pm

Recently I have not been able to get oil pressure on cold start up, until I prime the oil pump by pouring oil down the oil cooler hole in the block and pushing the car back wards in 4th (as per Turbo daves trick).

After this the car runs fine and intial presure is 50-60psi on tick over which drops to 20psi on tick over once the oil is fully upto temperature.

Then if I come back the next day, again no oil pressure, and this is even after cranking the engine, plugs out for several minutes!!

Engine is a 1275 A+ metro turbo, and oil pump and bearings have done less than 5000 miles.

The current summer ambient temperature here is between 90-100degrees F or 32-38 degrees C. because of this I am using 20-50 to try and keep the oil a little thicker in the heat.

Has anyone suffered from this?

My next step is to replace the relief valve plunger to make sure it is seating properly in an atempt to stop the oil running out of the pump over night, like holding your finger over the end of a drinking straw when you lift it out of a glass of water.

Failing this I think I will have to the pull the engine out and strip it down....as there are no real oil leaks.

There is plenty of oil in the engine.

Any advise would be greatly appriciated:)

BTW - I took my buddy VTEC Pete out for a spin this weekend, and even though I am running her in, he gave it a name, the "Brocket"...cause I'm a brocket maaannn, nah nah nah nah nah nah nah nah nah nah nah....

Build thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=7483

Katy Mini Owners Club Thread - http://www.turbominis.co.uk/forums/index.php?p=vt&tid=505552

Let's make sure you embarrass at least one VTEC MINI today !

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Rob Gavin

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Glasgow

19th Jul, 2010 at 04:48:32pm

our mate Andy Cameron has this problem; the car only gets used about once a year (if that!) and he simply primes it first - no idea what the cause is though or the solution i'm afraid

Brocky

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Katy TEXAS

19th Jul, 2010 at 05:21:26pm

Thanks for the info,

Just to note, this is only a recent problem, and I am just wanting to check there isn't an obvious solution I'm missing, or if I just need to wait till autumn cooler, or if I need to replace the pump.

Does any one know of any acumulator systems on the market that might help? I know some turbo applications use them to ensure turbo bearing oil pressure on start up ?

BENROSS

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Resident Cylinder Head Modifier

Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem

19th Jul, 2010 at 05:30:12pm

in this order brocky

sticking relief valve, make sure its seated correctly.

oil pump drain back caused by crappy gasket replace with gen thicker gasket original one

is the O ring between the block and gearbox ? there or fitted correctley ?

gummed up oil strainer in the box ?

Brocky

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Katy TEXAS

19th Jul, 2010 at 05:47:22pm

Thanks Steve,

Your wisdom is appreciated :)

Sticking plunger would make sense,

New plunger should arrive on Wednesday,

If that doesn't work I will have to strip the motor, and probably fit new shells, pump and gasket as a matter of course...unless everything looks A1

Are the swiftune pumps any good? They seem reasonably priced?

O-ring was fitted although all the gaskets and copper washers seem to leak with the heat and I have nipped most things up.

If I do strip it I have a new central pick up to go in :)

Cheers

Brocky

Edited by Brocky on 19th Jul, 2010.

BENROSS

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Resident Cylinder Head Modifier

Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem

19th Jul, 2010 at 07:47:26pm

brocky, a standard STEEL backed pump is well up to the job around £12 ish from minispares north
also replace the oil filter first!!!! as well it may be partialy blocked and or collapsed internall and the oil pressure is low when hot causing problems

Brett

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Doncaster, South Yorkshire

19th Jul, 2010 at 09:03:30pm

i found the problem to my dodgy oil pressure down to a dodgy oil pump gasket

(same symptoms as you)

Yes i moved to the darkside *happy*

Instagram @jdm_brett

Brocky

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Katy TEXAS

19th Jul, 2010 at 10:55:50pm

Thanks Brett and Steve,

Just inspected the relief valve spring and plunger,

Plunger has typical wear ring where it seats, but no scoring. No sign of any gunk or debris.

Spring measured 71.98mm relaxed, should be 72.63 according to haynes, so added a 0.6mm washer in the cap, re primmed oil, and gauge pressure looked to be a bit higher.

I guess I will see tomorrow if I can get pressure.....other wise out it comes, oil filter was just changed

I have a rover group conversion gasket set which has the oil pump gasket in so that should be the genuine item.

Thanks again for the advise guys :)

BENROSS

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Resident Cylinder Head Modifier

Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem

20th Jul, 2010 at 12:54:14pm

brocky remove that washer over time it will wear out and the debris will enter the engine ............ born out of experience!

fit a new spring

mowog

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21st Jul, 2010 at 09:11:38am

Your Oil Pump is Fucked

Ben H

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Melton Mowbray, Pie Country

21st Jul, 2010 at 09:48:04am

Oil Pressure - Has anyone had this problem?
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Oil Pressure - Has anyone had this problem?Turbo Mini Forums

Welcome to the TM ForumsFeel free to join our community for help, advice and banter!

Oil Pressure - Has anyone had this problem?
Turbo Mini Forums

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Feel free to join our community for help, advice and banter!