weed eaters

Reply

  #1  
Old 06-08-03, 06:47 AM
boman's Avatar
Member
Thread Starter
Join Date: May 2001
Location: North Alabama, USA
Posts: 487
weed eaters

I have several weedeaters ( different kinds )I am thinking of fixing. MOst will run with fuel poured into carbs. When I pull the mufflers to check for scouring, any way of expressing here how much, if any, scouring is acceptable? Don't want to waste time and money if the least bit of scouring makes it cost prohibitive. Examble: running till hot, then hard to start or adjust carb properly.
 
Sponsored Links
  #2  
Old 06-08-03, 08:21 AM
Sharp Advice's Avatar
Admin Emeritus
Join Date: Feb 1998
Location: The Shake and Bake State USA
Posts: 10,440
Hello boman

Scoring of the cyclinder walls should not be present. However, some will be or most likely will be present in very used engines.

Best method, in my opinion, would be to check the engines compression. Small engine compression gauges are a must for the small engine mechanic or repair enthusiast.

A specialty tool worth having in the diy shop and one which does not cost much. They are available at some auto parts stores, local small engine repair shops or by phone through the part sources I provided in many of my prior posting replies.

Engines that run hot may have internal damage not worth fixing. Especially if you were not the original owner. Continued usage of an engine that was not properly maintained or run on fuels with incorrect oil to fuel ratios causes severe internal damages.

Engines such as those most likely are not worth the attempts to fix but do make good engines to practice on and learn about. If this is your intentions.

Regards & Good Luck.
Web Site Host & Small Engine Forum Moderator
"Accurate Power Equipment Company"
Small Engine Diagnostics Services and Repair.
 
  #3  
Old 06-09-03, 12:05 AM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 16,815
It's hard to draw the line as to how much scoring is unacceptable. Some engines will run well with a bit of scoring, some won't, and there's not really much of any way to tell how deep the scratches are by looking through the exhaust port. After years of experience, you pretty much know by looking which ones are good, and which ones are trashed. A compression test would be the best way, as Tom mentioned, and even then it can be hard to draw a line across the board as to what readings would be below par.
 
  #4  
Old 06-09-03, 05:38 AM
fordv10f1
Visiting Guest
Posts: n/a
My suggestion to you is to buy a leak down tester. You run the engine till its hot and then you blow the cylinder up with air. If you buy one it will come with complete directions. They usually cost around $60. If it is the same as or more than 10% on four cycles or more than 8% on 2 cycles you would have to A replace rings or B at worse go to an oversized piston. Anoter tool can help you decide that. Inside Micrometers. Cheap but effective.
 
  #5  
Old 06-09-03, 06:52 PM
rogerh's Avatar
Member
Join Date: Nov 2002
Location: Quincy
Posts: 233
I just replaced the piston and cylinder on my Craftsman for $45.00. Thats just parts.
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes