TO much oil

[jbsiv]

Can a incorrect oil mix hinder the performance of a motor? If there is to much oil in the gas will it limit the performance or will it perform fine? My motor will not get up to the proper rpms and I read in my manual that this could be the problem.

 

[petryshyn]

Re: TO much oil

What RPM are you getting?

Low RPM can be caused by many things....
If its not smoking abnormally and fowling plugs, I doubt that oil mix is lowering your RPM.....

Would be nice to know more info! year engine hp etc...

 

[jbsiv]

Re: TO much oil

Sorry, it is a 76 40hp Johnson seahorse. Everything runs great but it does not seem to want to get up to the proper rps. It takes a while to plane out and then it will only run at half speed. A mechanic said that it may be running on only one cyllinder. But it runs great as i said and I wouldnt think that it would run that well on one cyllinder.

 

[F_R]

Re: TO much oil

What RPM are you getting?

Low RPM can be caused by many things....
If its not smoking abnormally and fowling plugs, I doubt that oil mix is lowering your RPM.....

Would be nice to know more info! year engine hp etc...

Too much oil can upset the fuel/air ratio. But having said that, it would have to be way, way too much oil. Unless you are dead certain what your excess is, you are probably better off to assume the problem lies elsewhere.

 

[Faztbullet]

Re: TO much oil

As F R said it can upset fuel/air ratio and I have seen where to much oil has leaned out cylinders due to jets cannot flow the overrich mixture.

 

[petryshyn]

Re: TO much oil

The most common and "easiest to check" failure will be ignition. Check to be sure you have spark at each cylinder.

Post back if you do.....

 

[jeff_smith_0423]

Re: TO much oil

It would have to be way off. Many people run 25:1 for their first tank of the year with no problems.

 

[jbsiv]

Re: TO much oil

I am not sure if it has spark on both cyllinders, how would I check that. The mechanic friend I have said to have the motor running ans pull the plugs.

 

[jeff_smith_0423]

Re: TO much oil

First thing to do is get a spark checker from any autoparts store. Hook it up, have someone crank the motor, and watch for a hot blue spark that can jump at least 7/16th's.

Another test would be to start the motor and pull the wire off cyl #1 with insulated pliers. Does the motor's behavior change? Repeat on #2. If you're not running on both cylinders, you'll know.

 

[jbsiv]

Re: TO much oil

Thanks, I will try that and let you know.

 

[Rick.]

Re: TO much oil

They run very well and smooth on one cylinder. The main symptom is poor/lack of power not rough running as you might expect. Best of luck. Rick.