HONDA CM125 OIL LEAK

[noixd]

Oil leaking from Honda CM125 Engine where the nut attaches to the frame... any ideas? See picture for more info...

[noixd]

Attached a picture of the bike... it's a recent purchase. As can be seen from previous picture the bottom of the engine had been covered in silicone by previous owner.

[Riejufixing]

What an horribly obnoxious looking thing. I suggest scrapping it immediately.

[Nobby the Bastard]

Aside from the fact that someone has turned a completely serviceable bike into that abortion, 5hats roughly where excess chain oil will collect and drip.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050

[jeffyjeff]

[noixd]

[noixd]

[noixd]

[stinkwheel]

Oil leaks track all over the place, usually down and back so it's invariably not coming from where you see it dripping. You need to get it all clean and de-greased to find where it's originating. I'd concur that chain fling is the most likely source, or a leaky sump plug.

There will be a crankcase breather hose somewhere that used to be connected to a small plastic filter box that probably got binned along with the airbox. I wonder where that's pointing...
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[jeffyjeff]

[stinkwheel]

[jeffyjeff]

[noixd]

Just had the mobile mechanic out he suspects a crack inside the crankcase and wants to take the engine away strip it down and ali weld the insides

[Nobby the Bastard]

I wouldn't throw good money away after bad so you may as well strip it for usable parts and sell them and burn the rest.

So that's maybe the wheels have any value.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050

[kramdra]

How much of a leak? Is it pissing out or just a drip? We have a Vstrom, always oily on the side cylinder mounting bolt but its so minor there is no point looking any further at it.


Also you realise a mudguard is intended to brace the fork lowers? not wise to omit it.

[Nobby the Bastard]

To be honest it's easier to put on a new casing than fix a broken one.

It's very unlikely to be a split casing though. More likely the seal or just excess chain lube.

Ignore the fuckwit. Any oil leak is bad unless it's an old brit because they were never oil tight.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050

[jeffyjeff]

[noixd]

[Nobby the Bastard]

[Riejufixing]

[Ste]

[MCN]

It's easy to determine where the leak is from.
Taste it.
If it tastes like piston rings it's engine oil
If it tastes like spring then it's suspension fork oil.

Basic checks are golden.
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Disclaimer: The comments above may be predicted text and not necessarily the opinion of MCN.

[stinkwheel]

[jeffyjeff]

[Nobby the Bastard]

Despite the OP being a complete and utter cockwomble who is in the wrong place if he doesn't want abuse for the abortion that he rides,he hasn't mentioned the shitload of crap thats been scraped off.

Engine oil isn't that sticky and just drips. Chain lube is designed to be sticky and fuck loads of crap builds up wherever it collects.

https://www.bikechatforums.com/download.php?id=103915
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050