Oil going low

retry · Post by **retry** » Sun May 26, 2019 9:11 am

Hi everyone,
recently noticed, that oil in my pcx125 (31k miles on the clock, most of milage is done on 65mph, so hi revs)) started to go low , so i looked around for oil leaks -nothing, tried to start cold and check for exhaust smoke- nothing, acceleration didn't change, decided to note down how much oil i add when topping up and it is 500ml per 1000miles, tried to find oil consumption figures for pcx 125 - didn't succeed. From what i think it is A LOT of oil ..
The only thing i can think off is that i done valve clearance adjustment 20k miles ago - coz engine sounds good see bo reason to do it, but maybe im wrong and valve clearance is to blame?

fish · Post by **fish** » Sun May 26, 2019 9:33 am

My vote for cause of oil consumption: "125cc at 65mph for 31,000 miles"
Don't think valves are involved here.
Fish

retry · Post by **retry** » Sun May 26, 2019 9:47 am

it is more 60-65 mph depends whether I'm going uphill or downhill.
so if I always do long runs on full throttle it burns oil?

fish · Post by **fish** » Sun May 26, 2019 10:28 am

retry wrote:it is more 60-65 mph depends whether I'm going uphill or downhill.
so if I always do long runs on full throttle it burns oil?

How many oil changes in those 31,000 miles?
Fish

retry · Post by **retry** » Sun May 26, 2019 12:07 pm

oil change every 1.5-2k

fish · Post by **fish** » Sun May 26, 2019 1:41 pm

Your consumption is significant. ....probably not completely out of order considering having been run 31,000 miles at WOT.
At what mileage did you notice this consumption?
A valve check at the recommended miles is a good idea.....but won't fix your oil use. Riding habits did that.
Fish

The Poacher · Post by **The Poacher** » Sun May 26, 2019 1:44 pm

32000,flat out, day in,day out, beginning of the end I feel...

retry · Post by **retry** » Sun May 26, 2019 2:39 pm

so the only option is bore kit ?

retry · Post by **retry** » Sun May 26, 2019 3:09 pm

fish wrote:Your consumption is significant. ....probably not completely out of order considering having been run 31,000 miles at WOT.
At what mileage did you notice this consumption?
A valve check at the recommended miles is a good idea.....but won't fix your oil use. Riding habits did that.
Fish

around 2000 miles ago

The Poacher · Post by **The Poacher** » Sun May 26, 2019 3:15 pm

retry wrote:so the only option is bore kit ?

Or get rid!

MikeP · Post by **MikeP** » Sun May 26, 2019 11:22 pm

Retry, your not alone in your experience. I have a 2013 150 PCX, now up to 51,000km or about 30,000miles. I find the need to top up my oil to the sum of about 250ml every 1000km. Or 50ml per fil up roughly. I recognize my riding habbits have contributed to the wear, but figure since I just love riding this scoot I will just enjoy it. When my oil consumption exceeds my fuel consumption, time to rebuild the engine.

Already have the parts in the garage for when that day comes.
Personally, I would not worry about it, just check your oil every fillup. If you plan on rebuilding the engine, you could start pricing out the parts and some how too videos. The manual is a must as well.
Just my 2 cents worth. Personally, I am set on rolling 100,000km.

retry · Post by **retry** » Mon May 27, 2019 3:08 am

MikeP wrote:Retry, your not alone in your experience. I have a 2013 150 PCX, now up to 51,000km or about 30,000miles. I find the need to top up my oil to the sum of about 250ml every 1000km. Or 50ml per fil up roughly. I recognize my riding habbits have contributed to the wear, but figure since I just love riding this scoot I will just enjoy it. When my oil consumption exceeds my fuel consumption, time to rebuild the engine. Already have the parts in the garage for when that day comes.
Personally, I would not worry about it, just check your oil every fillup. If you plan on rebuilding the engine, you could start pricing out the parts and some how too videos. The manual is a must as well.
Just my 2 cents worth. Personally, I am set on rolling 100,000km.

Man thank you for your reply!
Could you advise me what parts need to be replaced? Rings on pistons or piston with the rings+ cylinder head ( due to cylinder wall wear)?
i have full manual and some experience, the only thing i don't have- is time

)
72 pounds and 2-3 days of work with some beer

https://www.ebay.co.uk/itm/Cylinder-Kit ... 9955a59a36

retry · Post by **retry** » Mon May 27, 2019 3:22 am

retry wrote:
MikeP wrote:Retry, your not alone in your experience. I have a 2013 150 PCX, now up to 51,000km or about 30,000miles. I find the need to top up my oil to the sum of about 250ml every 1000km. Or 50ml per fil up roughly. I recognize my riding habbits have contributed to the wear, but figure since I just love riding this scoot I will just enjoy it. When my oil consumption exceeds my fuel consumption, time to rebuild the engine. Already have the parts in the garage for when that day comes.
Personally, I would not worry about it, just check your oil every fillup. If you plan on rebuilding the engine, you could start pricing out the parts and some how too videos. The manual is a must as well.
Just my 2 cents worth. Personally, I am set on rolling 100,000km.
Man thank you for your reply!
Could you advise me what parts need to be replaced? Rings on pistons or piston with the rings+ cylinder head ( due to cylinder wall wear)?
i have full manual and some experience, the only thing i don't have- is time )
72 pounds and 2-3 days of work with some beer
https://www.ebay.co.uk/itm/Cylinder-Kit ... 9955a59a36

Sorry mistake not cinder head, but block

MikeP · Post by **MikeP** » Mon May 27, 2019 9:34 am

Looks like you are from the UK judging from your link. The
Kit you linked has it all. I also included a timing chain, timing chain tensioner as I hear they are prone to go after 50k km. But the kit is a solid start. Just source out a supplier for the odd bits and pieces you may need while doing the job. Being in Canada, I use babbittsonline. Have been very happy with them and they have the same schematic breakdown as my Honda dealer. Makes part identification a breeze.

MikeP · Post by **MikeP** » Mon May 27, 2019 9:36 am

One last thing, just my opinion, stick with Honda factory parts. Saves compatibility issues.

retry · Post by **retry** » Mon May 27, 2019 10:48 am

MikeP wrote:Looks like you are from the UK judging from your link. The
Kit you linked has it all. I also included a timing chain, timing chain tensioner as I hear they are prone to go after 50k km. But the kit is a solid start. Just source out a supplier for the odd bits and pieces you may need while doing the job. Being in Canada, I use babbittsonline. Have been very happy with them and they have the same schematic breakdown as my Honda dealer. Makss part identification a breeze.

Thank you so much, especially for the tip with chain and tensioner.

WhiteNoise · Post by **WhiteNoise** » Mon May 27, 2019 11:16 am

Hi retry!

I'm glad to read that you're getting some very helpful advise from experienced members, They Rock! Please show some love back by Adding your location to your profile (simple directions are below my post).
Have fun tooling and please keep us updated

(+ pics)

To others who have not added their locations yet, please do the same. "Help Us to Help You"

Mel46 · Post by **Mel46** » Mon May 27, 2019 12:59 pm

Speaking of oil, I just now finished changing the oil on my PCX. I dont have a stand to put the bike on when changing the oil or doing maintenance, but it had to be done, soooo...

When I change the oil on my bikes I note it on some white duct tape I put on the swingarm. As long as you clean the arm to remove all grease, it sticks quite well.

: oil change label.jpg (111.68 KiB) Viewed 4105 times

fish · Post by **fish** » Mon May 27, 2019 2:50 pm

[quote="Mel46"]Speaking of oil, I just now finished changing the oil on my PCX. I dont have a stand to put the bike on when changing the oil or doing maintenance, but it had to be done, soooo...

When I change the oil on my bikes I note it on some white duct tape I put on the swingarm. As long as you clean the arm to remove all grease, it sticks quite well.

oil change label.jpg

[/quotei]
I write the same on final blank pages of owner's manual, kept under the seat.
Fish

Eiron · Post by **Eiron** » Mon May 27, 2019 6:19 pm

MikeP wrote:Retry, your not alone in your experience. I have a 2013 150 PCX, now up to 51,000km or about 30,000miles. I find the need to top up my oil to the sum of about 250ml every 1000km. Or 50ml per fil up roughly. I recognize my riding habbits have contributed to the wear, but figure since I just love riding this scoot I will just enjoy it. When my oil consumption exceeds my fuel consumption, time to rebuild the engine. Already have the parts in the garage for when that day comes.
Personally, I would not worry about it, just check your oil every fillup. If you plan on rebuilding the engine, you could start pricing out the parts and some how too videos. The manual is a must as well.
Just my 2 cents worth. Personally, I am set on rolling 100,000km.

+1 on this info.
One other suggestion might be to switch to a heavier weight motor oil to help slow consumption. You might see a very slight decrease in fuel efficiency, but I doubt it if you're riding WOT most of the time. I used to run 15W-40 conventional oil in my 1980 Honda Super Cub here in Northern Colorado without any issues other than slow starts in sub-freezing temps. Similarly, I've been using 15W-50 full synthetic in my PCX for the past few years. I'm thinking of changing over to 0W-40 for a little better MPG, but it's not the best choice if you're trying to limit consumption.

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