SOHC.co.uk Forums > CB750

Oil at Tappet Covers

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adespin:
The last time i had a cb750 was back in 1976 with a new K6, with a new bike i didn't worry about things like, is the oil circulating correctly, are the oil jets clear, but on reading some of the posts on this forum, it's now got me thinking about my bike, a 1971 K1 with 14000 miles on the clock, judging by the unrestored condition of the bike it could be genuine.
   So this morning i took the front tappet covers off and started the bike from cold, it took a couple of minutes for oil to appear, i was expecting oil immediately, is this normal ?

Rob62:
2 mins sounds like a long time...  does the oil light go out straight away?

adespin:
Yes Rob, instantly.

Nurse Julie:

--- Quote from: adespin on August 03, 2018, 04:49:53 PM ---Yes Rob, instantly.

--- End quote ---
Good news oil light goes out instantly but if you think where the oil pressure switch is located on the engine, the oil still has a fair way to go, including up through the infamous jets, until it gets to the camshaft area.

Rob62:
Exactly.... so we know we have oil pressure. Is the 2 minutes actually timed? Is there plenty of oil on the tappets and spring tops or do they look dry?  Have a good look when she has been stood overnight, then start her up and have another look after 20 seconds of running... if there is no extra oil after running i would definitely be looking at the jets... it may be the safest option anyway.

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