Question about 1985 Honda CB 700 SC Nighthawk

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1985 Honda CB 700 SC Nighthawk oil leaks

I have a 1985 Honda CB700SC Nighthawk S. The problem I am having is, after the motor has been run hot for awhile then is parked and left to cool on the center stand oil leaks from somewhere and drips down from the bottom of the engine. Also, I found traces of oil on the bottom of my air filter chamber. Please advise. @

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  • Honda Master
  • 47,865 Answers

Hi, Jbird2505 external oil deposits fall into 3 categories:
1. WEEPAGE is oil that is sweated pass gaskets, seals, o-rings, and crankcase seams, it's covered by dry dust and is normal for older engines with lots of miles, no repair is necessary.
2. SEEPAGE is the same as weepage except the deposit is wet and confines itself to a specific area, repair is optional depending on the owner's cleanliness criteria, the deposit location and the weight of his bag of "DRACHMA"
3. LEAKAGE is the same as seepage except it is enough to drop to the ground leaving a spot. Repair as necessary.
To find the source of your oil leak, start at the point where you see oil and trace its path going up and forward, blowing baby powder from the palm of your hand will help in those difficult to see areas if there is too much oil present then buy a spray can of engine degreaser apply it to the affected area then rinse off with a pressure wand or garden hose, use compressed air to blow off excess water or just let it drip dry, take your bike for a 15 minute ride and check for the leak.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
https://groups.google.com/forum/#!topic/nighthawk_lovers/UYsnE2APF3E
Total Motorcycle Forums
https://drive.google.com/uc?id=0B_wugBxirhqrS1lQZlVMYUMycGM&export=download
https://www.partsfish.com/page/oem-parts-for-honda
Honda cb650 Owner Manual

Posted on Jan 24, 2018

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SOURCE: Where is the oil filter on a 1995 Honda Nighthawk 250.

Welcome to Fixit!
Its on the side of the bike ,down low,almost on bottom ,its a big nut,it has the filter inside the case.

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SOURCE: gas leak as soon as engine starts

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SOURCE: rear shock oil 1985 honda aspencade

Hello thor67...your wing should hold 300cc's per side.
Tip: suggest useing 15wt fork oil instead of the ATF that mother Honda recommends.
Hope this helps...ride safe...ride smart.

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SOURCE: I have a 1985 nighthawk s 700 and am changing the

no need to gap them if they are new. straight out of the package is just fine. you only ever need to gap used plugs after you clean them, cause as they wear the gap gets bigger.

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