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1Back to top Go down   K75 Engine squeak on idle when hot Empty K75 Engine squeak on idle when hot on Tue Sep 01, 2020 8:40 am

-mek-

-mek-
active member
active member
My K75 has 134 000 on the clock. Last winter i repaired waterpump, replacing all the seals and drive shaft. Only after 1700 kms the engine started squeaking on idle. The squeak is only heard on idle when engine is hot. With cold engine and/or higher rews there is no squeak. Video below is not mine, but the squeak is equal. As far as I know, the timing chain and sliders has been replaced at 78 000 kms, but of course I cannot be sure about the present 134 000 kms, there has been two owners in between. Any ideas? Waterpump again? Timing chain sliders?


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2Back to top Go down   K75 Engine squeak on idle when hot Empty Re: K75 Engine squeak on idle when hot on Tue Sep 01, 2020 10:21 am

moriarti

moriarti
Life time member
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Hi mek,use a rubber tube to listen with more accuracy for the source of the squeak
OR hang a mouse trap on and see what you catch K75 Engine squeak on idle when hot 167893


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1984 k100 rs red/black VIN  0004449
    

3Back to top Go down   K75 Engine squeak on idle when hot Empty Re: K75 Engine squeak on idle when hot on Thu Sep 03, 2020 1:30 am

-mek-

-mek-
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My friend lent me his stetoscope yesterday. The squeak seems to come from water/oil pump, so coolant out and pump off again.


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4Back to top Go down   K75 Engine squeak on idle when hot Empty Re: K75 Engine squeak on idle when hot on Thu Sep 03, 2020 7:02 am

moriarti

moriarti
Life time member
Life time member
Hi mek,If there is no oil/water contamination or oil leak i would be tempted to leave it.maybe a seal softening product might help not a lot of mileage to warrant a strip down Very Happy


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1984 k100 rs red/black VIN  0004449
    

5Back to top Go down   K75 Engine squeak on idle when hot Empty Re: K75 Engine squeak on idle when hot on Sun Sep 06, 2020 3:08 pm

-mek-

-mek-
active member
active member
I unassembled the water-/oil pump. I cannot found a clear reason for the squeaking sound. Pump does not leak, neither oil or coolant. Both seels look fine. Impeller was still a bit stiff to turn by hand. Some marks can be seen on impeller shaft gearing and oilpump case.


I would doubt for some other part to be broken, if the squeaking sound wouldn't so clearly come from water pump cover. When I listened with a stetoscope with metal pick, the loudest squeak came from water pump cover, next loudest from water pump case. From Timing chain cover or motor block the squeak was hardly hearable.


K75 Engine squeak on idle when hot Index.php?action=dlattach;topic=12982



K75 Engine squeak on idle when hot Index.php?action=dlattach;topic=12982



K75 Engine squeak on idle when hot Index.php?action=dlattach;topic=12982



K75 Engine squeak on idle when hot Index.php?action=dlattach;topic=12982



K75 Engine squeak on idle when hot Index.php?action=dlattach;topic=12982



K75 Engine squeak on idle when hot Index.php?action=dlattach;topic=12982



K75 Engine squeak on idle when hot Index.php?action=dlattach;topic=12982


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