fenpark15
22.05.2021 6:54:17
It's almost certainly damaged. The purpose of the two-stroke oil is as follows: more
See full version: Did I damage my two-cycle engine by running it without oil
It's almost certainly damaged. The purpose of the two-stroke oil is as follows: more
Cooling: Well, it's in an engine. It's kinda vital to keep something working with EXPLOSIONS to a certain level of COOL. If not, it'll overheat.
Sealing: It actually acts as a liquid-type seal between the piston rings and cylinder. Not that it could hold back the explosive force of the air-fuel mixture being ignited, but it's purpose is still there. That's why two-stroke oil is somewhat thicker than it used to be. [links]
The motor started well, and idled smoother and smoother as time went on for about 10 minutes. I slowly revved it up & down. Shortly after that it just died.
What fuel fits your boat best?
Older two-stroke outboard motors on your smaller personal boat may require you to mix the fuel and oil on your own. Sometimes there is a smaller tank located near the engine for you to pour two-stroke oil into. here
Some people find that they prefer to mix their own fuel, even if the boat motor offers the capability of pre-mixing it for you. Check with your owner’s manual to see what is recommended. here
My son did it on his bike, it lasted another month or so before the crank bearings came apart. more
I think the proper term would be "straight" gas vs mixed gas.
Re: Regular Gas in 2 stroke engine? [links]
Re: Regular Gas in 2 stroke engine? here
In testing I've run large engines at idle on straight gas for over 2 hours without problems. When power is applied, such as getting up on plane, a motor will be seized or internally damaged in a very short time.<br /><br />Check compression first and/or pull the heads and inspect the cylinder walls.<br /><br />I take it that the VRO system is disconnected and that is why your are mixing the gas and oil.<br /><br />Over the years I've seen perhaps 10 times the number of ruined motors from folks disconnecting the VRO and forgetting to mix the oil, as have ever been damaged by a faulty VRO pump. more
Re: How Long Can a 2 Stroke Run Without oil
You are correct - the VRO was disconnected when I got the boat several years ago and I was advised not to reconnect since there was some risk it was disconnected for a reason.<br /><br />The compression still ranges from 107 to 120 in the cyclinders which is less than ideal but the same as it has been for the several years I have had the boat.<br /><br />I have no loss of power but remain concerned about "hidden" damage. [links]
Re: How Long Can a 2 Stroke Run Without oil here