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The mkiv Supra Owners Club

Cant Get Oil Pressure on New engine


JODY T

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yeah get an oil press gauge to do your readings.

 

I had this problem as well with my new engeine. turned and turned it forever without getting pressure. In the end I tried to fill up my oil cooler hoses with oil and it did the trick.

but if you havent got an oilcooler...then I dont really know what to do

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I had a zetec I rebuilt which appear not to build oil pressure, it was crap in the sender at the end of the day. A replacement cured it. I also had a very tight fast road A series that wouldn't turn the light off cranking at idle. after a rebuild. I fired it up and it went straight off (But Chris's suggestion is a bit safer if more hassle) .

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I'm gonna remove the engine this week end, I'm gonna replace all the o rings and seals on the oil pick up.. I'm sure it is right but as with anything I'm now loosing confidence and what if has set in..

 

I really don't want to start it, coz with my luck ide blow it up.. Whilst the engine is out I will pre fill the pump and surrounding pipes I can get to.. I'm hoping something will become obvious..

 

I'll try and get oil pressure with the engine on the floor, by rigging up a battery to the starter..

 

But before that I'm gonna check pressure with a gauge tonight, but the pump is not moving any oil so I'm expecting to see no pressure..

 

If u see no pressure at all, can I assume it's a big leak on the pick up or the pumps not pumping at all.. Is my thinking correct?

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you can always remove the oil pressure regulator nut and pour oil down which will go directly into the oil pump. it means all the timing covers will have to come off to gain acess. IF you go down that route do not over tighten the nut when putting back together as it only seals on a o-ring and can easily crack the oil pump casting if over tightend.

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Can you get an electric pump, or even a pump attachment to a drill and use that to prime the system through the oil pressure switch?

 

About an hour to do as a guess. Then crank it with the pump attached and you'll get oil pressure! Remove the external pump and crank again... it'll work ;)

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Ive done as Chris mentioned re towing it.. Towed it to 20mph and slowly released the clutch, Hey presto the oil light went out :)

 

So i came home with a :) I then fitted the plugs, coil packs, reconnected the fuel supply etc etc and tried to start..

 

 

It started first time the oil pressure light went out which was great, Its sounds like a 2JZ should which again was good BUT i have NO throttle control. Also the oil level light came on but I know its got 5.5Litres of oil (and i checked the level it was a little under the full mark) The engine management light came on straight away and its gone into limp mode (revs at 2.5k) with no throttle responce...

 

Im assuming its because the car is a pre VVTI shell and the car loom is different ( I have one plug on the engine loom that i cant plug into anything as its not there.. I assumed it was sonething to do with the tiptronics but maybe i should guess again...

 

I also dont have a trac button so it could be sencing that too... I cant find anything re this so my first thought is to get a new car loom and fit that. (Big Job but straight forward)

 

Has anyone herd of this before? I guess this is why people dont fit VVTIs to older cars lol.. But i like to be a bit different..

 

Solve one problem and get another, Still at least im :)

 

Big Up to Chris Wilson!!!!

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Ive done as Chris mentioned re towing it.. Towed it to 20mph and slowly released the clutch, Hey presto the oil light went out :)

 

So i came home with a :) I then fitted the plugs, coil packs, reconnected the fuel supply etc etc and tried to start..

 

 

It started first time the oil pressure light went out which was great, Its sounds like a 2JZ should which again was good BUT i have NO throttle control. Also the oil level light came on but I know its got 5.5Litres of oil (and i checked the level it was a little under the full mark) The engine management light came on straight away and its gone into limp mode (revs at 2.5k) with no throttle responce...

 

Im assuming its because the car is a pre VVTI shell and the car loom is different ( I have one plug on the engine loom that i cant plug into anything as its not there.. I assumed it was sonething to do with the tiptronics but maybe i should guess again...

 

I also dont have a trac button so it could be sencing that too... I cant find anything re this so my first thought is to get a new car loom and fit that. (Big Job but straight forward)

 

Has anyone herd of this before? I guess this is why people dont fit VVTIs to older cars lol.. But i like to be a bit different..

 

Solve one problem and get another, Still at least im :)

 

Big Up to Chris Wilson!!!!

 

Doesn't the VVTI have electronic throttle? or have you fitted a pre VVTI throttle body?

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Yes it does FLy By Wire... Obviously it has sences something wrong.. Could be the cam timing as i can get no definitive answer of how do actually do it..

 

I went with the fully clockwise approach and the engine does sound nice But the Mil Light was on straight away.. It could also be the fack that i have no Traction control, Ie the car loom is different and i have one plug in the footwell that i cannot plug into anything.. Its the White one (there is a Grey one too, thats pluged in) That i cant plug in.. Anyone know what it is? What it does?

 

Think i need to find a scanner to borrow or Hire.. Anyone know of one?

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I dont have a Trac fuze cos the car was originally a 96 facelift NA 6Speed.. :(

 

No i havent swapped the car loom, I have a tiptronic loom that i modified so it would work with a Manual box.. That works great..

 

I managed to plug in every plug except the white one.. I assumed it was for tiptroic/traction control etc but i dont know for definate..

 

IT could just be the cam timing incorrect as i cant get a proper answer on this either... I went for fully counter clockwise on the intake.. Is that correct?

 

If i can find a car loom ill fit it, but still trying work arounds..

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I dont have a Trac fuze cos the car was originally a 96 facelift NA 6Speed.. :(

 

That could be a bit of an issue. Mine wouldn't even start without the fuse.

 

No i havent swapped the car loom, I have a tiptronic loom that i modified so it would work with a Manual box.. That works great..

 

Does the piece of loom you sent me in the post work for the manual then? I'm going to try it next week as I've been really snowed at work.

 

IT could just be the cam timing incorrect as i cant get a proper answer on this either... I went for fully counter clockwise on the intake.. Is that correct?

 

Not sure on this, sorry bud.

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No Im using a VVTI engine Loom and ECU with the VVTI engine.. THe THrottle is controlled by a cable from the pedal to the throttle pot where a petentiometer controls the butterfly..

 

And Yes the Loom i gave you will fit.. However you will have to fit it on the car side of the loom on the orange plug then itll work lovely...

 

anyone want a free vvti cambelt change lol i could find out then

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