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Thread: Start up Squeal

  1. #1

    Default Start up Squeal

    I have a pair of Crusader 270's circa 1983 with 1400 hrs. On cold start up, the port engine has a squeal or whine that goes away as the RPM comes up. At first I thought it was a belt, changed those, the raw water pump, changed that, the alternator, took that off and had it tested fine, changed cap and rotor, (has been updated to EST ignition years ago) to and still i have this squeal. It does sound a lot like a bearing running dry. I am running DELO 400 15W40 oil and change it annually at about 60 - 75 HRS.
    Now I am thinking this might be oil pressure related (as it goes away and does not happen on a restart) but am wondering if any of you might have some ideas of what to check next.
    Appreciate all comments and thanks in advance.
    Mark McMaster
    1983 Tollycraft 34SC
    Crusader 270's

  2. #2

    Default Re: Start up Squeal

    Only thing left up front is the engine water pump. They are known to squeal as you described. Might take the belt off when the engine is cold and rotate it by hand to see how the bearing feels.
    Good Luck.
    FL Panhandle

  3. #3
    Join Date
    Nov 2008
    Location
    Trenton, Ontario, Canada
    Posts
    401

    Default Re: Start up Squeal

    As silly as this sounds...I had the same symptoms......thought it was a belt. I thought that was a bit odd seeing I just had just replaced all the belts this year and the symptoms did not appear for about a week or so after the belts were replaced.

    The squeal went away as the RPM increased as well

    Went in the engine room and looked around and finally found the problem when I was looking DOWN, over the front of the engine.

    One of my new belts was on the wrong pulley......moved belt problem solved

    Color me EMBARASSED
    Don Keye
    From 600 kts to 6 kts
    Dun-Fly'N

  4. #4

    Default Re: Start up Squeal

    Well, I checked the circ water pump. Removed the belt and fired it up for a minute. Squeal still there.
    On further listening I think it might be the starter. Maybe the bendix is not fully releasing?????
    I am going to take it off and send it in to be checked.
    Mark McMaster
    1983 Tollycraft 34SC
    Crusader 270's

  5. #5
    Join Date
    Sep 2003
    Location
    New Tripoli, PA, USA!
    Posts
    15,271

    Default Re: Start up Squeal

    Gotta be that. Nothing else left!

    Jeff

  6. #6

    Default Re: Start up Squeal

    Well.....I took the starter to have it "serviced" and it checked out fine, in fact they can't believe it's 32 years old !!
    So... I am still looking for ideas. Maybe the Velvet drive? 71C direct 1:1.52.... or maybe the distributor?? thoughts?
    I'll try and video the start up and post it just so you can hear this "squeal"
    Mark McMaster
    1983 Tollycraft 34SC
    Crusader 270's

  7. #7

    Default Re: Start up Squeal

    Make sure the outer ring on the harmonic balancer hasn't slid back into the timing chain cover. You'll see paint missing on the cover.

  8. #8

    Default Re: Start up Squeal

    Still working on this squealing noise.
    I am sure that the noise is from the distributor.
    An old "Chevy" guy told me that it could be that the shaft and gear are seated too low and not allowing oil to lubricate at start up.
    Is there an easy way to shim this to allow a greater tolerance?
    Thanks in advance for any ideas or suggestions.
    Mark McMaster
    1983 Tollycraft 34SC
    Crusader 270's

  9. #9

    Default Re: Start up Squeal

    I have the same squeal off my right motor at cold start only for about two or three seconds. Mine are 1987 Crusader 270's with 1590 Hrs. It sounds to me like it's coming from the front of the engine, and when I tightened up the water pump belt, it seemed to help for awhile. I've always thought it takes quite a bit of effort to get that belt properly tightened due to it's location.

    It defiantly has the sound of a belt or possibly a bearing...wondering what you'd feel if anything if you touched the cap at start up and see if it resonates in your hand. I'll try on mine next time I start and report back.

    I'll be watching this post for sure.

    Good luck.

  10. #10

    Default Re: Start up Squeal

    Went for a run yesterday and had the same slight squeal for a moment on the right engine. I felt the distributor while it happened and it was fine....so that's not it. Just thought I'd throw that out there. I'm still thinking it must be the belt in the water pump pulley taking a second to mate with the belt properly.

    Just a thought.....

  11. #11
    Join Date
    Dec 2015
    Location
    maplevalley WA
    Posts
    3,549

    Default Re: Start up Squeal

    Is the ignition switch sticking in the start position? Possible weak spring in the switch after the engine fires up see if the switch snaps into the run position all the way and if that make it stop squealing by doing it manually if necessary?
    It takes a nickle to go first class!
    If it aint broke dont fix it!!

  12. #12

    Default Re: Start up Squeal

    I have eliminated the belts as being the problem. ( I ran the engine briefly with out the belts ) Fairly certain it's oil pressure related as it goes away with a slight throttle increase and is really only noticeable on a cold start up. I will double check the ignition switch theory, I'll use the fly bridge switch and see if it acts the same. Thanks for the advice so far......
    Mark McMaster
    1983 Tollycraft 34SC
    Crusader 270's

  13. #13
    Join Date
    Apr 2016
    Location
    barnegat NJ
    Posts
    2,706

    Default Re: Start up Squeal

    Might be a valve guide not getting oil upon start up,pull one valve cover

  14. #14
    Join Date
    Oct 2007
    Location
    , ny, us
    Posts
    1,031

    Default Re: Start up Squeal

    Just to clarify...the noise was still there with all the belts removed???? Any vacuum leaks????

  15. #15

    Default Re: Start up Squeal

    Yes the squeal is there with both belts removed. There is no vacuum leak that I am aware of.
    Mark McMaster
    1983 Tollycraft 34SC
    Crusader 270's

  16. #16
    Join Date
    Aug 2008
    Location
    Fairport, NY
    Posts
    1,632

    Default Re: Start up Squeal

    I would use a mechanics stethoscope. There are a lot of metal on metal surfaces that rely on pressurized oil film and have none at startup. Could be timing sprocket pushing on the timing chain cover all the way back to VD oil pump and everything in between. BUT, it's certainly not normal. Would be nice to narrow it down some. Without belts on, it does smell like internal issue.
    Open the oil filter and see if there are filings. That may indicate how important this is.

  17. #17
    Join Date
    Apr 2016
    Location
    barnegat NJ
    Posts
    2,706

    Default Re: Start up Squeal

    Mark keep us posted with update

  18. #18

    Default Re: Start up Squeal

    I wonder if this squealing is coming from the transmission. Could it be that if it sits too long the plates in the transmission rub for the second or two it takes to get oiled?

    Duke1

  19. #19
    Join Date
    Dec 2006
    Location
    Chaumont Bay, N.y., USA
    Posts
    5,218

    Default Re: Start up Squeal

    Ayuh,... Yer a Year late to this party,....
    Any Grease is Better,... Than No grease at All....

  20. #20
    Join Date
    Dec 2008
    Location
    Bourne, MA, USA
    Posts
    309

    Default Re: Start up Squeal

    Quote Originally Posted by bondo View Post
    Ayuh,... Yer a Year late to this party,....
    But a resolution was never posted by OP. Not unusual, but perhaps this will serve as a reminder to Mark, and others, that it is useful to post whatever the fix was.

  21. #21

    Default Re: Start up Squeal

    My apologies for not providing an update. The fact is I have not found a solution and have just been living with it.
    I did change cap and rotor this Summer and noticed that the permanent magnet on the distributor is loose.
    (These are Delco EST distributors that were upgraded by the previous owner about 12 years ago)
    I have just ordered a new distributor and over the Winter will install it. Fingers crossed this will fix it once and for all.
    Now looking at the easiest way to re and re the distributors.
    Sorry again for dragging this out.
    Mark McMaster
    1983 Tollycraft 34SC
    Crusader 270's

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