The Honda PCX / Forza / ADV150 / SH Forums

150pcxer wrote: ↑Mon Mar 01, 2021 11:44 am Very strange.

So I went to the workshop to get the old oil drained out and put in new fresh engine oil. I told the mechanic to put in 800 mls, which he did.

After which, I went for a ride for about 20 kms then stopped for a break. After waiting for about 10 minutes, I took out the dipstick to check.

It still shows the oil level way above the maximum level.

I don't know what's wrong.

Any ideas?


Yes, like mine your dipstick lies......

My story is this.... scoot is starting to use a bit of oil, so I diligently made sure my oil is at the top of the hash mark on the dip stick as per the manual. Checked it every fill up, thats my routine. I make sure the bike is on level ground. Changed the oil some time ago, and it did not feel like enough drained out. So I measured it and got about 600ml. At this point I felt like I entered the “Twilight Zone” !!!!.
I had pulled the filter screen, drain bolt, and rocked the bike. That was it 600ml.
So I re checked my manual specs, and put it back together with 800ml of oil. Ran for a few minutes, let it sit for 10 minutes and checked the oil. It reads high on my dip stick as in your photo postered previously. The dipstick was not screwed in to be clear.
I do not know how many 1000’s of Km I may have ridden with low oil, but at 77,000km it has not given me any touble.

My suggestion is this, fill it up with the 800ml of oil, ensure you are on level ground. Check it and make a note of where the level reads on the dipstick and use that as your “Full” mark on the dipstick.

It is really easy to over think these things and look for “gremilins” where there are none. I am very good at that.
I hope this helps.

MikeP wrote: ↑Sat Aug 28, 2021 11:10 am

150pcxer wrote: ↑Mon Mar 01, 2021 11:44 am Very strange.

So I went to the workshop to get the old oil drained out and put in new fresh engine oil. I told the mechanic to put in 800 mls, which he did.

After which, I went for a ride for about 20 kms then stopped for a break. After waiting for about 10 minutes, I took out the dipstick to check.

It still shows the oil level way above the maximum level.

I don't know what's wrong.

Any ideas?


Yes, like mine your dipstick lies......

My story is this.... scoot is starting to use a bit of oil, so I diligently made sure my oil is at the top of the hash mark on the dip stick as per the manual. Checked it every fill up, thats my routine. I make sure the bike is on level ground. Changed the oil some time ago, and it did not feel like enough drained out. So I measured it and got about 600ml. At this point I felt like I entered the “Twilight Zone” !!!!.
I had pulled the filter screen, drain bolt, and rocked the bike. That was it 600ml.
So I re checked my manual specs, and put it back together with 800ml of oil. Ran for a few minutes, let it sit for 10 minutes and checked the oil. It reads high on my dip stick as in your photo postered previously. The dipstick was not screwed in to be clear.
I do not know how many 1000’s of Km I may have ridden with low oil, but at 77,000km it has not given me any touble.

My suggestion is this, fill it up with the 800ml of oil, ensure you are on level ground. Check it and make a note of where the level reads on the dipstick and use that as your “Full” mark on the dipstick.

It is really easy to over think these things and look for “gremilins” where there are none. I am very good at that.
I hope this helps.

yeah but just now I brought the dipstick close to my nose to smell it and it smelled of petrol.

Perhaps I should buy a new fuel injector?

MikeP wrote: ↑Sat Aug 28, 2021 1:09 pm I can’t say much about a sniff test. But if the bike is starting and running fine, I would not worry about it.

If fuel were getting into the oil, then logic tells me the bike would be starting and running poorly.

Thats what happened when the an injector went bad in my gravel truck.

Jge64 wrote: ↑Sat Aug 28, 2021 1:57 pm . It doesn’t take much gas at all to lower the viscosity of the oil, especially since the amount of oil in the scooter is small. A leaky injector can cause bearings to go bad, get the injector checked as soon as possible. All you need to do is pull it out of the bike, put it on the bench for a test. Another way to check is to send an oil sample to Blackstone for a review of the oil. However it’s pretty easy to see in a Sample if you mix it with gas, as viscosity goes down quickly.

Jge64 wrote: ↑Sat Aug 28, 2021 11:47 pm And injector leaking is only one thing that can make oil. There are others. One of the other ones is the bike runs too cold, therefore the computer thinks the engine is warming up and adds the choke on. Incomplete combustion causes blow by the piston rings and into the oil.

Jge64 wrote: ↑Sun Aug 29, 2021 12:58 am Check temp, replace thermostat-check for ecu faults

If you are absolutely sure that you are putting in the right amount of oil after completely emptying the machine with a good drain, and the level is still going up, I would test the oil with Blackstone and find out exactly what is being added to the oil, it’s either coolant or fuel. And go from there

150pcxer wrote: ↑Sat Aug 28, 2021 10:51 am

Jge64 wrote: ↑Sat Aug 28, 2021 7:22 am Smell the oil, does it smell like gas?

Yes I was just about to tell you about it.

I smelled the oil on the dipstick. It did indeed smell like petrol. Maybe we're on to something.

Perhaps I should follow your advice and order a new fuel injector.

springer1 wrote: ↑Sun Aug 29, 2021 8:35 pm

150pcxer wrote: ↑Sat Aug 28, 2021 10:51 am

Jge64 wrote: ↑Sat Aug 28, 2021 7:22 am Smell the oil, does it smell like gas?

Yes I was just about to tell you about it.

I smelled the oil on the dipstick. It did indeed smell like petrol. Maybe we're on to something.

Perhaps I should follow your advice and order a new fuel injector.

Does the oil seem thinned out like there's fuel in it or is it the same viscosity as 'normal' oil ? A multi cylinder engine can possibly run (poorly) if one of the cylinder's injector is malfunctioning, but I don't know how a single cylinder engine could. JMO

Jge64 wrote: ↑Sat Aug 28, 2021 11:47 pm And injector leaking is only one thing that can make oil. There are others. One of the other ones is the bike runs too cold, therefore the computer thinks the engine is warming up and adds the choke on. Incomplete combustion causes blow by the piston rings and into the oil.

Inoplanetyanin wrote: ↑Sat Oct 09, 2021 9:51 am Sounds like someone has trouble reading the oil level. The dipstick may be getting some oil on in from contact with the walls. Only the hashed section is what needs to be read. Hard to explain to an inexperienced person. They got to be able to tell the difference on the dipstick between smears and true oil level.