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Oil usage with auto lube

  • Youngdrakeo
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Oil usage with auto lube was created by Youngdrakeo

Hey team. 
I have had some pretty good seat time on the ported ct3 now. 
I have  noticed since I switched from premix to A DEET rebuilt autolube pump I am using alot of oil. On idle I'm getting heaps of smoke out the pipe. 
I have used over 3/4 of a oil tank in  roughly 150kms 
I don't know if that's normal or not. 
I am running larger oil lines (from yambits) 
Oil is castrol gold 
Quick action throttle 
Unsure if any of this plays a part. 

The bike runs like a absolute train. Doesn't bog. Will pull 25mph in top grear right out to redline. 

Any tips would be great cheers

 
 
 
  
73 CT3 modified, 74 AG175 MX, 79 YB100 x2 , 79 GT 80 ,2015 ducati scrambler ,honda CT70
24 Nov 2021 23:19 #1

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Replied by Youngdrakeo on topic Oil usage with auto lube

Leaking exhaust gasket ovbously. But exhaust port shot. 
73 CT3 modified, 74 AG175 MX, 79 YB100 x2 , 79 GT 80 ,2015 ducati scrambler ,honda CT70
24 Nov 2021 23:44 #2

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Replied by darinm on topic Oil usage with auto lube

That seems high. My CT2 with an untouched oil pump uses about 1/3 oil tank per full gas tank. So ~1/3 per 100km or so. On the other hand, if it's running well (I do like having a temp gauge, too much oil can make it run too hot) and not fouling plugs, I'd leave well enough alone.
1972 Yamaha CT2 175
1972 Suzuki TS185 Sierra
2013 Yamaha XT250
25 Nov 2021 00:56 #3

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Replied by shyted on topic Oil usage with auto lube

Here's a long winded but good explanation of how to measure the output YoungDrakeo.
www.youtube.com/watch?v=IY4bPLwb1Z0
However you don't have a standard set up so i don't know if you would use more but it should be relative .
See the oil coming out of the pipe flange , i stopped that on mine by making a gasket and applied RTV to both sides of it then tightened the flange. You can get sealing string on ebay as a genuine part for the insert side .
Dave.
Last edit: 25 Nov 2021 01:15 by shyted.
25 Nov 2021 01:05 #4

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Replied by Youngdrakeo on topic Oil usage with auto lube

With a temp gauge I wasn't seeing over 300 degrees 
73 CT3 modified, 74 AG175 MX, 79 YB100 x2 , 79 GT 80 ,2015 ducati scrambler ,honda CT70
25 Nov 2021 01:51 #5

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Replied by Youngdrakeo on topic Oil usage with auto lube

Thanks dave will have a watch..
Run a custom flange for my custom pipe. I believe its just leaking there cuase I re used a old exhaust gasket. Hopfuly.. Makes a awful mess. 
73 CT3 modified, 74 AG175 MX, 79 YB100 x2 , 79 GT 80 ,2015 ducati scrambler ,honda CT70
25 Nov 2021 01:55 #6

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Replied by MarkT on topic Oil usage with auto lube

Have you checked the oil pump cable adjustment? 

Larger carb?

Slide travels more distance = pump pulley rotates more = more oil...  I think Yamaha installed larger pulleys on bikes with larger carbs?

Still sounds like a lot of oil unless maybe you are using a lot of throttle all the time? 

Distance isn't the key...  amount of fuel used is what you want to pay attention to...  running hard you could use about a tank of oil for every 2 tanks of fuel or so... 

P.S.  What manifold are you using? 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
25 Nov 2021 06:54 #7

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Replied by DEET on topic Oil usage with auto lube

Here are a couple of thoughts on changing oil use.
1. If everything was stock (just like it came from the factory) set it to factory specs and leave it alone.
2. If Yamaha published a procedure in the owner's manual  to CUSTOMIZE oil consumption, I have never seen it.
3. If you want to experiment with using less oil, reduce the amount of pump pulley travel. Instead of aligning the pin with the mark on the pulley, back it off slightly. Just a little at a time. Otherwise you are going to seize the engine.
4. If you want to experiment with using less oil at idle, reduce the shimmed gap between the plunger and the pulley by .001" at a time.
5. Since you have no way to quantify any of this data, and you are non-stock, you run the risk of seizing the engine.So proceed at your own risk.

The size of your oil lines is not affecting your oil consumption.


Another thought.... if the check ball is not stopping the flow of oil from the tank (when the engine is off), the tank could be emptying into the crankcase and make the appearance of high oil usage. This NORMALLY would not come into play while the engine is running. However, it is POSSIBLE that the larger oil lines, larger shaft clearance and a failure of the check ball COULD cause a greater gravity flow past the pumping mechanism.

"How can I test this, DEET?"
Disconnect the banjo oil feed hose from the cylinder and check for a big puddle of oil in 24 hours. Don't start the engine until you reconnect the banjo.
A few drops in 24 hours? No problem. 


 
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Where the Yamaha Enduro is still a current model...
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25 Nov 2021 08:32 #8

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Replied by MarkT on topic Oil usage with auto lube

One other thought is oil choice...  I searched Castrol Global and there is no such official product name "Castrol Gold". 

There is a two stroke product that comes in a gold bottle in your part of the world...  Castrol Power1 2T Racing.  It's fully synthetic.  That could contribute to the smoking?  Most modern synthetic oils are designed for leaner a/f mixture running modern water cooled engines...  more modern engines tend to have leaner oil injection pump settings as well. 

I've found modern synthetics..  even the injection types... tend not to burn as well and smoke a lot more than the good old fashioned mineral oil these bikes were designed to run on. 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
25 Nov 2021 09:15 #9

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Replied by Youngdrakeo on topic Oil usage with auto lube

Mark. If we are going on how many tanks of fuel then its probably pretty close to 3 tanks of fuel to where its currently sitting in the oil tank. It does drink fuel now with the work. But totally worth it. 

Manifold is a early yz85, its stretched to its absolute max with the vm34. I don't expect it to last years. I will stock up on them actually. 

Yes sorry its castrol power one 2t (smells amazing) 
Someone did mention that too. The fully synthetic has a higher flash point? Maybe I should drain the tank and try some mineral oil before any other adjustments. Not even semi synthetic? 

Thanks for the replys!! 
73 CT3 modified, 74 AG175 MX, 79 YB100 x2 , 79 GT 80 ,2015 ducati scrambler ,honda CT70
25 Nov 2021 13:31 #10

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