Weed Wacker Died

[Toyboy]

Several things come to mind:
Engine run lean ...air leak?
Using outboard oil will carbon up exhaust like that
Straight gassed
Wrong mix ratio

 

[woody]

Several things come to mind:
Engine run lean ...air leak?
Using outboard oil will carbon up exhaust like that
Straight gassed
Wrong mix ratio

Thanks, but what is the difference in outboard two cycle oil and weedeater oil? all we used was Stihl oil bought when we bought our leaf blower but I did not realize there is a difference.

 

[TemporaryKubotaOwnerMark]

.... and the exhaust port almost plugged. I..... the blackness of the oil is a concern as well as the stickiness of it, had to wash my hands several times to get it off maybe not 2 cycle oil not sure.

Your answer is right there. A lean condition does not cause massive carbon build up. Somebody used the wrong oil.

 

[Toyboy]

TCA - (two cycle air), is formulated for the higher running temp of air cooled engines

TCW-3 - ( two cycle water) is formulated for temp controlled water cooled engines.


It's possible some of that carbon (small sand like pieces) broke loose and started the problem. Once you start getting aluminum transfer from piston to the cyl it's just a matter of time.

 

[EverythingAttachments]

I have a Stihl blower for home use and have to take out the spark arrestor and clean the screen at least once a year because of build up due to the ethanol gas. It takes about 10 minutes and she runs like a new one afterwards.
Travis

I found out about it from a youtube video like this:

 

[Oldoak]

It's not ethanol gas alone that causes blocked spark arresters. We always cleaned spark arresters on two cycle engines periodically long before ethanol gasoline came along.

But you did bring a good point about cleaning the often forgotten spark arresters. :thumbsup:

Sometimes a partially blocked spark arrester is mistaken for carbonator problems.

 

[EverythingAttachments]

It's not ethanol gas alone that causes blocked spark arresters. We always cleaned spark arresters on two cycle engines periodically long before ethanol gasoline came along.

But you did bring a good point about cleaning the often forgotten spark arresters. :thumbsup:

Sometimes a partially blocked spark arrester is mistaken for carbonator problems.

I just wonder how many people have junked theirs because of this. I know I was ready to throw mine off a cliff before I figured it out! :laughing:
Travis

 

[woody]

I believe I will have to add cleaning the spark arrester to my yearly maintenance. I have a stihl blower also but have never cleaned the arrester

 

[EverythingAttachments]

I believe I will have to add cleaning the spark arrester to my yearly maintenance. I have a stihl blower also but have never cleaned the arrester

When it acts a little sick, cleaning will literally breathe new life into it! :laughing:
Travis

 

[dougbthom]

We recently purchased a Stihl FS70 trimmer.

The sales guy told us to use non ethanol gas if possible and Stihl oil... not required, just better results.

He also told me to prime it with the primer bulb 3-5 times each time I needed to start it, even it is was already warm. My belief is this provides some extra lubrication for starting.. I have not looked into it technically, but it appears that the primer bulb squirts some fuel into engine. I see no reason to do this on a warm engine that starts right up other than lubrication..

A good friend that has been in the business for over 35 years has told me years back to never run any fuel other than premium fuel ( NO ethanol) in any of my garden and yard equipment as fuel in his experience has been the number 1 problem in all equipment over the years. I have also used Amsoil lubricants in everything that I own and have for about 16 years now with fantastic results. Hope this helps.