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  1. M

    Mercruiser 350 MAG MPI - Oil pressure issue

    Dip stick as mentioned should be still the original one.. but seems not fitting properly anymore. I've also checked some pictures of the replacement of the oil pump --> there it is visible, that the dip stick tube goes down even a little beyond the oil pan filter! --> so it really should go...
  2. M

    Mercruiser 350 MAG MPI - Oil pressure issue

    Engine should be from 2001, Boat 2002 - 0M04xxxx something - so from "350 MAG MPI ALPHA/BRAVO 0L331599 THRU 0M299999" Yes - will try this weekend to add oil. The dipstick tube has not been removed during repair --> it was/is somehow glued in, so we were not able to remove it (without...
  3. M

    Mercruiser 350 MAG MPI - Oil pressure issue

    Yes, I see it already the same way --> checking for different oil pans, I couldn't find any hint (also not in cars) that there could be one model taking less than ~4.5 quarts of oil --> so I'm also quite sure here we have a problem. We also thought ok, we're only able to suck out ~3,5 to 4...
  4. M

    Mercruiser 350 MAG MPI - Oil pressure issue

    Well yes - oil analysis would be no bad idea. But now after approx. 5-6 times oil change (due to issues and maintenance work) within maybe last 10-15h operation time.. might not show too much anymore? Debris or other residuals could have been an issue --> when we had seen this issue end of last...
  5. M

    Mercruiser 350 MAG MPI - Oil pressure issue

    It is recommended Quicksilver 25W40 Synth oil used.
  6. M

    Mercruiser 350 MAG MPI - Oil pressure issue

    Ok! (y)
  7. M

    Mercruiser 350 MAG MPI - Oil pressure issue

    Yes, already ordered additional accessories to easier connect the mechanical gauge and read it also when running - to check for bad connection. Ok - will check to find the sensor or plug and connect then also the gauge there. But if it is already failing at oil pressure sender connection...
  8. M

    Mercruiser 350 MAG MPI - Oil pressure issue

    Yes, check in marina with mechanical gauge showed reading should be fine. If there could be some GND issue only during boating.. we might have to check. Oil we've also tried different blends (quality marine oils like Liqui Moly Marine...) and with additives as mentioned - but actually it is the...
  9. M

    Mercruiser 350 MAG MPI - Oil pressure issue

    Hi! Thanks for the quick reply! Yes - these pressure values are read from the gauge at the helm. And yes, we've also had an issue with oil pressure at idle already before winter - there the alarm started some times at idle, when entering gear and idle rpm was at lowest (~700rpm) that oil...
  10. M

    Mercruiser 350 MAG MPI - Oil pressure issue

    Hi! I am new here - hello everyone! - immediately with a strange issue on my Mercruiser V8 engine: It starts and runs without any issue, oil pressure at start and cold oil close to 40psi at idle rpm, dropping down to roughly 20psi when oil is at temperature.. everything as expected. When then...
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