Forums
New posts
Search forums
Members
Current visitors
New profile posts
Search profile posts
What's new
New posts
New profile posts
Latest activity
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Everything Dirt Bike
Make / Model Specific
Yamaha
1978 DT 175 Build Thread
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="2smoke" data-source="post: 149770" data-attributes="member: 563"><p>Yes it is a 2T machine. But it appears that it has an oil injections system. So you have the motor apart and parts on the way. So this is what I would do. Get the engine back together and ready for break in. But you will need to disable or cap off the the oil injection portion for the break in. Find out what the pre mix ratio is supposed to be and mix up a gallon of pre mix. Then proceed with the break in using pre mixed fuel in the gas tank. No this wont hurt anything. Once you have the engine running and mostly broke in then you can trouble shoot the oil injection system. This is pretty easy to do also. Fill the 2T oil reservoir with oil. About half way will be enough. Remove the hose or line that injects the oil into the carb. Start the bike (ensure that your still running pre mixed fuel in the gas tank). Let it idle and observe the oil line to see if it is producing oil. It should make some. Then try it at different throttle positions to see how much oil it is producing out of the oil line. If no oil is produced then the pump isnt functioning. If oil is produced atleast you know its working. But it should produce a certain amount of oil. For example a drop of oil per second. You will only know for sure how much its supposed to produce with a little research or a manual. If you dont want to replace or repair the oil injection system you can totally disable and remove the system. (ensure that you cap off or plug where the oil line injects the oil into the carb.) At this point you can just run pre mixed fuel and know for sure that your piston is adequately lubricated with no worries of damage.</p><p> </p><p>If the injection system is working correctly producing the proper amount of oil. Then yes you will only need to put just fuel into the gas tank, and only 2T oil in the oil reservoir. I recommend running a thin oil synthetic oil. My reason for this is that you dont know how tired the oil pump is. If your 2T oil is too thick it may have problems pumping the oil to the carb resulting in to little or no lubrication to the cylinder. This is mostly a problem if it is cold out side. Unless youve replaced the oil pump. Then at that time you can run what ever you'd like to in the way of 2T oil.</p><p> </p><p>Hope this helps. Ive done something similar to this with a oil injected ATV that I suspected was having oil injection problems. Turns out the oil wasnt the correct type of 2T oil and it was very cold out side and the oil in the injection reservoir was really thick. So I cleaned it out and ran Red Line 2T oil to make sure the pump was working correctly. And we continue to run Red Line oil in that ATV year round with zero issues winter or summer.</p></blockquote><p></p>
[QUOTE="2smoke, post: 149770, member: 563"] Yes it is a 2T machine. But it appears that it has an oil injections system. So you have the motor apart and parts on the way. So this is what I would do. Get the engine back together and ready for break in. But you will need to disable or cap off the the oil injection portion for the break in. Find out what the pre mix ratio is supposed to be and mix up a gallon of pre mix. Then proceed with the break in using pre mixed fuel in the gas tank. No this wont hurt anything. Once you have the engine running and mostly broke in then you can trouble shoot the oil injection system. This is pretty easy to do also. Fill the 2T oil reservoir with oil. About half way will be enough. Remove the hose or line that injects the oil into the carb. Start the bike (ensure that your still running pre mixed fuel in the gas tank). Let it idle and observe the oil line to see if it is producing oil. It should make some. Then try it at different throttle positions to see how much oil it is producing out of the oil line. If no oil is produced then the pump isnt functioning. If oil is produced atleast you know its working. But it should produce a certain amount of oil. For example a drop of oil per second. You will only know for sure how much its supposed to produce with a little research or a manual. If you dont want to replace or repair the oil injection system you can totally disable and remove the system. (ensure that you cap off or plug where the oil line injects the oil into the carb.) At this point you can just run pre mixed fuel and know for sure that your piston is adequately lubricated with no worries of damage. If the injection system is working correctly producing the proper amount of oil. Then yes you will only need to put just fuel into the gas tank, and only 2T oil in the oil reservoir. I recommend running a thin oil synthetic oil. My reason for this is that you dont know how tired the oil pump is. If your 2T oil is too thick it may have problems pumping the oil to the carb resulting in to little or no lubrication to the cylinder. This is mostly a problem if it is cold out side. Unless youve replaced the oil pump. Then at that time you can run what ever you'd like to in the way of 2T oil. Hope this helps. Ive done something similar to this with a oil injected ATV that I suspected was having oil injection problems. Turns out the oil wasnt the correct type of 2T oil and it was very cold out side and the oil in the injection reservoir was really thick. So I cleaned it out and ran Red Line 2T oil to make sure the pump was working correctly. And we continue to run Red Line oil in that ATV year round with zero issues winter or summer. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Everything Dirt Bike
Make / Model Specific
Yamaha
1978 DT 175 Build Thread
Top