Re: Chainsaws won't run

Posted by Texasmark1 on November 12, 2017 at 04:28:23 from (99.197.190.172):

In Reply to: Re: Chainsaws won't run posted by jeffcat on November 11, 2017 at 18:28:28:

Per your comments awhile ago, back when I switched carbs on a BS V twin per your recommendation, I have been using such in my small engines and have realized improvements worth the extra cost.

I know that premium is designed for high compression engines, to prevent pre-ignition, but aren't they made up of more of the volatile compounds which are what makes for the price increase? With that said and considering you have a fuel with this percent and that percent of these additives, and fuel evaporates over time, and the volatile go first leaving the base product which is what gums up the works, wouldn't one think that premium would stay "good" longer in addition to starting and running benefits.
----------------------
On the BS additive, first of all you have to ask yourself: If there wasn't a bonafide fuel problem, why would BS come up with their own version? Second of all, since they are the engine mfgrs, seems they would know at least as good as anybody which mix of what makes for the best engine performance over time. Based on that I added it to my collection of "snake oils". So, my current fuel supply is premium fuel with some BS and some Sea Foam, and some StaBil Storage. Oh and per the comment one of the posters on the side mentioned, I installed shut off valves on all my engines that sit over the winter to drain the carbs when the season ends. We'll see how it goes.

----------------

On hard starting, check the compression. Some of these little 2 strokers only have 1 piston ring and alum. cylinders, and others only 2 rings with alum cylinders. I reworked a couple last year with problems and checking the compression as a prelude to the repair I found I had about 90 psig on both engines. My Mercury 2 stroke OB service manual said that if I had less than 120 psig, expect problems. Well if my OB engine is of the same basic design as the little 2 strokers so what's good for the gander must also be good for the goose.

Check your compression!

Replies:

Add a Reply! You must be Logged In to Post Name: E-Mail: Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Optional Video Title: Optional Video URL: Advanced Posting Options Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks. No political comments, hate speech or bigotry of any kind will be tolerated. Violations will be removed and posting privileges may be permanently revoked without notice.   Advanced Posting Tools   Upload Photo  Select Gallery Photo  Attach Serial No List  Return to Post  Upload Photos/Videos Choose Files from your local computer Upload one or more videos to your post. Photo filesizes should be less than 300K and Videos, less than 2MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]