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  1. #11
    Join Date
    Jun 2016
    Location
    Nantwich Cheshire
    Age
    53
    Posts
    286
    Quote Originally Posted by peterj1974 View Post
    Hi Mike
    Pressure testing kit sounds good. Wouldn’t mind getting one myself. Which one have you got?
    Not sure of the exact one as it was a xmas pressie.
    But it's something like this..

    https://www.manomano.co.uk/p/engine-...ol-kit-1199773

  2. #12
    Join Date
    Feb 2002
    Location
    Bradninch, Devon, U.K.
    Age
    71
    Posts
    2,335

    Cool

    My Chevy 350 runs at 50 psi on tickover when cold dropping to 40 psi at 2000rpm when hot
    That’s according to my oil pressure gauge anyway
    CHRIS C - SW REP - Maisie (DB No.46)
    Diplomat and expert on French Motoring Tribunals

  3. #13
    Join Date
    Jan 2006
    Location
    Chelmsford Essex
    Posts
    987
    Does the oil pressure warning light come on if you have one fitted? At start up and on tick over pressure oil will be a lot higher until the engine oil warms 2 -3 bar until the engine warms and the oil thins.

    https://www.youtube.com/watch?v=I8teB16U0LA

    Nice video with some good detail.

  4. #14
    Join Date
    Jan 2014
    Location
    High Wycombe
    Age
    55
    Posts
    641
    Don't mean to state the obvious, but have you checked for no/low oil?

    Graham.
    AK gen 1 delivered 05/05/17, on the road shortly!

  5. #15
    Join Date
    Jun 2005
    Location
    Norton Cross
    Posts
    520
    Hello
    Did some checks over the weekend.
    Oil level is fine. Coolant looked okay - I use the AK coolant tank, it was about half full - so I added a bit more coolant.
    I bough an oil pressure test kit from machine mart - connected it up and was getting just over 4 bar when engine cold. Once it had warmed up to 80 degrees it was showing about 2.5 bar.
    So this seems okay to me. Was going to take it out for a run to see how it behaves but started raining so will do that next weekend if weather is ok.

    Cheers

    Pete
    Follow my progress here http://petesakcobra.blogspot.com

  6. #16
    Join Date
    Jan 2006
    Location
    Chelmsford Essex
    Posts
    987
    The pressure bar readings are spot on. So sounds like your gauge or pressure sensor is faulty. It's a big relief when you now know it's not a costly and time consuming fix.

  7. #17
    Join Date
    Apr 2013
    Location
    Basingstoke, UK
    Age
    38
    Posts
    331
    I peter,

    Based on your other post about the oil leak, I think it is likely that your sensor is no good, thus leaking oil and therefore not reading accurately.

    Kit has arrived.....follow my progress here at my blog:
    http://marksak427.blogspot.co.uk

    AK 427 Gen II
    Chevy SB 350
    Tremec TKO 600

    Well.....that's the plan at the moment!

    Welcome to the money pit......

  8. #18
    Join Date
    Jun 2005
    Location
    Norton Cross
    Posts
    520
    Hello
    So still not fixed the issue but have a bit more info to run past the forum and see what you think.
    I've fixed the leaky oil sender with some permatex thread sealant. I changed the oil and filter, adding 5 quarts which is what my sump takes.
    Started engine - getting about 4 bar (60psi). I tested with a kit and get the same so I know sender and gauge are good.
    Took car out for a drive - seemed ok initially but then after a couple of miles noted oil pressure was down to 1 bar (15psi). It would occasionally drop lower, and then come back up to 1 bar - but most of the time when driving it was showing 1 bar. But when I stopped moving (engine still running), oil pressure increases to about 3 bar. Start moving again and it drops back to 1 bar.
    I thought I might need more oil in so added in another quart but still behaves the same.
    Any ideas what's causing this?
    Next step in my mind is to take the sump off and check things like oil pump and pick up.
    Pete
    Follow my progress here http://petesakcobra.blogspot.com

  9. #19
    Join Date
    Jan 2014
    Location
    High Wycombe
    Age
    55
    Posts
    641
    Does the oil pressure drop off when going up or down hill or tight into a corner? Sounds a bit like you are "loosing" the oil as you would, with fuel in the tank, when you've nearly run out and the yellow light has been on just a little too long (don't ask how I know) , so possibly a pick up problem or the sump not deep enough to hold enough oil. Hope that makes sense I'm making it up as I go along.

    Graham.
    AK gen 1 delivered 05/05/17, on the road shortly!

  10. #20
    Join Date
    Jun 2004
    Location
    Northampton
    Posts
    1,599
    Wouldn’t do any harm to loosen the oil filter and make sure it’s filled with oil after your filter change.
    Dek

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