Mazda Rotary Club

General => General Technical => Topic started by: leeroy_25 on August 16, 2008, 08:37:12 PM

Title: Low Oil pressure
Post by: leeroy_25 on August 16, 2008, 08:37:12 PM
I have a 93 FD3. I appear to have very low oil pressure on warm idle.. I say this.. It\'s not always like that! some times it sits just under 2kg/cm.. then others it may drop to just above 0! as soon as you touch the throttle though it goes up to 4kg/cm or more.. And when around 5000rpm yo have 6kg/cm plus. Is this normal.. The gauge does seem to jump about a bit when idling. Are the factory guages reliable? I have an oil leak on one of my turbo\'s so I imagine I may be loosing a bit of pressure through that possibly?

Also I reckon the oil has possibly thinned a bit.. possibly got a bit of petrol contamination. Very hard to say. Is it normal to get a bit of petrol in the oil or is that not possible on the rotary setup? If it is, but bad, let me know what the cause is!

Thanks
Lee
Title: Low Oil pressure
Post by: hairyhoover on August 16, 2008, 08:43:12 PM
is this on the stock sensor and gauge? if so the sensor isnt that great try taking it out and cleaning it up.
Title: Low Oil pressure
Post by: leeroy_25 on August 16, 2008, 08:53:39 PM
Yes it\'s all stock..  Will take it out and clean it when I do my oil change!
Title: Low Oil pressure
Post by: logicalChimp on August 16, 2008, 08:58:48 PM
heh - that behaviour is pretty stock ;)
Title: Low Oil pressure
Post by: hairyhoover on August 16, 2008, 08:59:56 PM
just to let you know you can do it whenever - just make sure things are cold!
Title: Low Oil pressure
Post by: leeroy_25 on August 17, 2008, 06:12:46 PM
Thank you guys for putting my mind at rest!!
Title: Low Oil pressure
Post by: Prototype on August 18, 2008, 09:07:58 AM
Mine did the same when I first got it. While I was driving and suddenly noticed I had no oil pressure but then as soon as I had chance to pull over it was back up to normal pressure.

I replaced the oil pressure sender and I\'ve never had a problem since (This was 8 years ago)
Title: Oil pressure sender!
Post by: DMDRIFTING on December 12, 2008, 10:16:30 PM
How much is an oil pressure sender?

Might be worth changing mine soon, as i have the same problem!

What did you do in the end Lee?
Title: Low Oil pressure
Post by: leeroy_25 on December 13, 2008, 04:15:57 PM
Hey there mate.. Not done anything yet!! no time! I have a new oil pressure guage with sender I will fit eventually! I could try the sender off my spare engine and see if it\'s any better.. just been flat out!

Lee
Title: Low Oil pressure
Post by: ashc on December 13, 2008, 07:18:15 PM
mine does this, i gota quote from mazda for a new sender recently, came in at just over £120 and they said it would be on back order, might take 8wks to arrive and i would have to pay upfront, so i put that idea on hold for a bit :-(
Title: Blimey!
Post by: DMDRIFTING on December 13, 2008, 07:44:38 PM
Blimey £120 thats a little too much. Be easier to purchase a Defi Oil Pressure Gauge and add it to some other gauges :chat
Title: Low Oil pressure
Post by: ashc on December 14, 2008, 08:01:17 PM
Quote from: DMDRIFTING;565041Blimey £120 thats a little too much. Be easier to purchase a Defi Oil Pressure Gauge and add it to some other gauges :chat

yes, done that, but the duff needle in the cluster annoys me!!
Title: Low Oil pressure
Post by: Aceman on December 15, 2008, 01:17:05 PM
Quote from: DMDRIFTING;565041Blimey £120 thats a little too much. Be easier to purchase a Defi Oil Pressure Gauge and add it to some other gauges :chat

Think if you look around (not ordering from Mazda UK) you can get them for around £85 but still damn expensive!!

Mine\'s not erratic, just damn slow. It\'s response rate is awful so probably just needs a good clean, if I could be bothered..
Title: Low Oil pressure
Post by: Shiuko on December 15, 2008, 02:14:17 PM
This is what I\'d do if I had the money.

(http://www.maxcooper.com/rx7/how-to/spa_gauges/AUT_2337_opt.jpg)

http://www.maxcooper.com/rx7/how-to/spa_gauges/index.html


Unfortunately, it doesn\'t look like I\'ll be doing it any time soon.
F@cking credit crunch!!!  :2Mad
Title: Low Oil pressure
Post by: leeroy_25 on December 27, 2008, 10:56:48 AM
Hey DMDrifting..

You around tomorrow? Sunday 28th? I was thinking of driving up the top of Portsdown hill around Miday if the weather is any good. Could be a good photo op! just got a new digi cam! Let me know if you are about. Could possible go for a little drive after.

Lee
Title: Lee!
Post by: DMDRIFTING on December 28, 2008, 12:05:48 PM
Hello Lee,

my missus has just popped out for a little bit, what time are you heading up there this afternoon?

Think i\'ve lost your number, actually just found it will give you a ring!
Title: Pic\'s!
Post by: DMDRIFTING on December 28, 2008, 06:05:55 PM
Hey Lee did you get any pictures?