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oil pressuregoaferboy
@GUEST
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Apr 14, 2007 22:48:43 GMT
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right the mazda is the first car iv ever had with an oil pressure guage so iv no idea what it means.
it normally sits at 60 but i noticed today that when its idling (coasting or at junctions) it drops pretty quickly to 30. bout 5-10 seconds to drop. when the engine revs again it quickly rises back to 60. bout 3-5 seconds to go up.
is this normal? just thought id check since oil is pretty important for a rotary
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Seth
South East
MorrisOxford TriumphMirald HillmanMinx BorgwardIsabellaCombi
Posts: 15,542
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Apr 14, 2007 22:55:12 GMT
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I'd be happy with that! I've no experience of rotaries mind, but that would certainly be healthy for a push rod engine. The pressure will drop when idling simply because the pump gets less efficient.
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Follow your dreams or you might as well be a vegetable. |
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markbognor
South East
 
Posts: 9,970
Club RR Member Number: 56
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oil pressuremarkbognor
@markbognor
Club Retro Rides Member 56
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Apr 14, 2007 22:55:45 GMT
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My merc does the same, i've assumed that its a combination of the oil being thin once hot so the oil pump cant keep the presure up when turning slowly, and the oil pump being worn and not able to maintain the pressure at low revs. I'd have thaught that full oil pressure with a few revs and a drop at tickover would have been fairly normal.
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Apr 14, 2007 23:02:26 GMT
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Has the oil pressure changed from when you first had the car...ie has it got worse?
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oil pressuregoaferboy
@GUEST
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Apr 14, 2007 23:05:43 GMT
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not a clue. i always remember it sitting at 60 most of the time. i must not have looked at it when its at idle speed. it shoots up to 60 again when the engine rises above idling speed.
i thought it might be ok since it seems to make sense, the less the engine is revving the less oil it needs. but i have zero knowledge of oil so i figured it best to ask
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Apr 14, 2007 23:16:57 GMT
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Zero at idle is ok, aslong as it goes up when you rev the engine.
My Oxford shows about 5 at idle when hot, and 30 when revving. I'm told this is ok, but not ideal.
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Last Edit: Apr 14, 2007 23:18:08 GMT by Lankytim
1987 Maestro 1.6 HL perkins diesel conversion 1986 Audi 100 Avant 1800cc on LPG 1979 Allegro Series 2 special 4 door 1500cc with vynil roof. IN BITS. HERITAGE ISSUES.  |
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Apr 14, 2007 23:52:58 GMT
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Sounds fine to me!
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1974 Lancia Beta Saloon
1975 Mazda 929 Coupé
1986 Mazda 929 Wagon
1979 Mazda 929 Hardtop
1982 Fiat Argenta 2.0 iniezione elettronica
1977 Toyota Carina TA14
1989 Subaru 1800 Wagon
1982 Hyundai Pony 1200TL 2-dr
1985 Hyundai Pony 1200 GL
1986 Maserati 425 Biturbo
1992 Rover 214 SEi 5-dr
2000 Rover 45 V6 Club
1994 Peugeot 205 'Junior' Diesel
1988 Volvo 760 Turbodiesel Saloon
1992 Talbot Express Autosleeper Rambler
2003 Renault Laguna SPEARS OR REAPERS
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mine works in BAR, from cold i get 6BAR! it usually sits at around 4BAR when driving at temp and at tick over at temp gets areounf 1BAR
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Seth
South East
MorrisOxford TriumphMirald HillmanMinx BorgwardIsabellaCombi
Posts: 15,542
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mine works in BAR, from cold I get 6BAR! it usually sits at around 4BAR when driving at temp and at tick over at temp gets areounf 1BAR 1 Bar is approximatly 14.5 PSI form memory if that helps anyone... |
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Follow your dreams or you might as well be a vegetable.
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Marc
Posted a lot
Posts: 1,037
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Sounds like theres nothing to worry about on the oil pressure front! My 205 GTI oil pressure varies greatly. At idle on hot days or after a track session its almost at the bottom of the guage. Give it some beans though and it zips up the guage. As others have said, its simply because the oil is thinner when its hot and the pump isn't working as "hard".
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Rob
Posted a lot
You know, for kids!
Posts: 2,515
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mine (Rover V8) will idle at 20-30 then go up wards of 60 when revved. As Seth said it sounds healthy but check with a Rotary type person  |
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slater
Club Retro Rides Member
Posts: 6,390
Club RR Member Number: 78
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oil pressureslater
@slater
Club Retro Rides Member 78
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aye it will normaly drop a bit when idling and when the engine heats up.
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Sounds find goafterboy - although the only way to be sure would be to check the owners manual that the value you get is in range (provided the gauge is accurate  Rob - sounds pretty much like mine: When hot  (water temp = oil temp, must re-label that sometime. And clean the throttle butterfly, again ;D) |
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Last Edit: Apr 15, 2007 9:32:44 GMT by Lewis
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