Logo
Click for Suzuki Manuals, Parts and Model Guides!
Results 1 to 8 of 8
  1. #1

    Default DF70 blows oil filter gasket out

    Hello, got a boat with twin 2000 df70's on it. Has been sitting on a lift for 6-7 years. Former owner did them no favors. Left fuel in tanks and never ran engine dry. So, new filters, fuel pump and plugs and sea foam engine will start right up. Will idle for a minute then die. Not too concerned about that, alot of stuff to get cleaned up. Problem is when i throttle up to say 1800-2000 rpms oil filter gasket blows out. Happened twice.
    Any ideas about next step or what the causation is?
    Appreciate any advice.

    Thanks,
    Jbhl4

  2. #2
    Join Date
    Oct 2012
    Location
    sacramento, ca.
    Posts
    307

    Default Re: DF70 blows oil filter gasket out

    i would take the filter off, and make sure that the old oil filter gasket is stuck to the block.
    *** In comparing the virtues of various calibers, using hollow point ammo: it is absolutely undeniable that, while a 9 mm or .40 S&W may or may not expand, a .45 will never shrink. ***

  3. #3

    Default Re: DF70 blows oil filter gasket out

    Yes, did that both times, second time scraped the metal surface with a razor to make sure there wasn't anything on it. The o ring gets blown right out of the can. When you look at a new one it looks like it's pressed in.
    But, thanks for the reply!

  4. #4
    Join Date
    Oct 2012
    Location
    sacramento, ca.
    Posts
    307

    Default Re: DF70 blows oil filter gasket out

    next step would be to put a mechanical oil gauge and see what it reads when the blow out happens. you may have a bad oil pump.
    *** In comparing the virtues of various calibers, using hollow point ammo: it is absolutely undeniable that, while a 9 mm or .40 S&W may or may not expand, a .45 will never shrink. ***

  5. #5

    Default Re: DF70 blows oil filter gasket out

    Yeah, that seems to be the consensus. Thinking I might just change the oil pump anyway. Hate to pull the head to get at it, but a man's gotta do......

  6. #6
    Join Date
    Apr 2016
    Location
    barnegat NJ
    Posts
    2,707

    Default Re: DF70 blows oil filter gasket out

    Good luck,post back with results.

  7. #7

    Default Re: DF70 blows oil filter gasket out

    Narrowed it down to a bad oil pressure relief valve.....So here is another puzzler, to me anyhow. Took off the power head to replace the oil pressure relief valve. Unplugged the ECM to get at all the wiring. Could not believe the amount of sludge in the oil pan. Ridiculous amount. Anyway, cleaned it all out, replaced the valve and put it back together. Used the other engine as a guide for routing the wiring back into the correct places, had to unplug that engines ECM to get a better look at a few specific wires. Now, have no power to the fuel pump on either engine. WTH?? Both worked fine before. The only common thing I did to both was unplug the ECM. Refuse to believe they both went bad. Is there a reset procedure after you unplug the ECM or am I missing something?

  8. #8

    Default Re: DF70 blows oil filter gasket out

    so, tested the oil pressure. Was normal at idle but red lined the gauge at 2k. Changed the oil pressure relief valve and now pressure stays right where it's supposed to. Was an awful lot of sludge in the oil pan. Cleaned it all out and seems to be running fine. The fuel pump issue was not power related. I removed the fuel pump and hot tested it of the battery and it was fine. Turned the spacer upsided down, re-installed and all is well. ......until next time lol.....
    Thanks for the help folks.

    JB

Similar Threads

  1. New rebuilt engine blows out oil filter gasket.
    By markbabb in forum Mercruiser Sterndrive Forum
    Replies: 21
    Last Post: 07-02-2014, 12:34 AM
  2. 1980 70hp 3yl Johnson outboard/head gasket/water jacket gasket
    By toss42 in forum Johnson Evinrude Outboard Forum
    Replies: 2
    Last Post: 06-23-2010, 10:13 PM
  3. Change Oil Filter body gasket In 75 Honda
    By stairwaytoseven in forum Honda Outboard Forum
    Replies: 8
    Last Post: 03-17-2010, 07:46 AM
  4. Fuel filter inlet nut gasket
    By migot07 in forum Mercruiser Sterndrive Archive
    Replies: 3
    Last Post: 04-16-2008, 10:57 AM
  5. Blown oil filter gasket
    By roy rodgers in forum Archive 2003-2007
    Replies: 3
    Last Post: 03-17-2004, 12:03 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •