Craftsman leaf blower won't start

Reply

  #1  
Old 10-10-18, 08:53 AM
Member
Thread Starter
Join Date: Oct 2018
Location: USA
Posts: 7
Received 0 Votes on 0 Posts
Craftsman leaf blower won't start

My craftsman leaf blower ran just fine last year as i ran it all day getting rid of those leaves. At the end of the day I shut it off, and it never started again. It has good spark, good fuel still nothing. It doesn't even try to start. I've sprayed starting fluid directly into cylinder and still nothing. Even though I didn't have to, I replaced the coil and the carb. Still nothing. It seems to have good compression. I took the exhaust off also to make sure it wasn't blocked. Can anyone give me any tips as to what the heck is wrong. And what exactually is a good compression reading supposed to be?? Thanks for any help
 
Sponsored Links
  #2  
Old 10-10-18, 11:14 AM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 17,181
Received 17 Votes on 15 Posts
Compression should be 90 or better. Check the cylinder to be sure it's still bolted tightly to the crankcase.
 
  #3  
Old 10-10-18, 12:06 PM
Member
Thread Starter
Join Date: Oct 2018
Location: USA
Posts: 7
Received 0 Votes on 0 Posts
Question

I had checked the head bolts and they are all as tight as possible. When i checked the compression it was at 83. I don't know if that is good enough.
 
  #4  
Old 10-10-18, 11:22 PM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 17,181
Received 17 Votes on 15 Posts
It can run with that compression, especially considering the cylinder is probably washed down with starting fluid now.

Is the spark plug wet? The engine may be flooded. Pull the plug out, give it full throttle, and pull it several times. Put the plug back in, give it full throttle, no choke, and see if it will start.
 
  #5  
Old 10-24-18, 09:45 AM
Member
Thread Starter
Join Date: Oct 2018
Location: USA
Posts: 7
Received 0 Votes on 0 Posts
My compression tester was actually from back in the 80's, so I purchased a new Craftsman tester. This time it reads only 75. So I'm guessing I either have a head gasket problem or i need to install new piston rings.
 
  #6  
Old 10-24-18, 01:08 PM
Member
Join Date: Aug 2015
Location: USA
Posts: 475
Received 6 Votes on 6 Posts
how are you checking compression are you pulling it over till compression stops raising or just 1 pull? have you tried testing compression after squirting oil into cylinder?
 
  #7  
Old 10-24-18, 02:12 PM
Member
Join Date: Dec 2005
Location: USA
Posts: 502
Received 9 Votes on 9 Posts
It's been my experience that Craftsman leaf blowers are disposable items once they refuse to start. Went to Stihl blowers and have not had any start issues since.
 
  #8  
Old 10-29-18, 05:46 AM
Member
Thread Starter
Join Date: Oct 2018
Location: USA
Posts: 7
Received 0 Votes on 0 Posts
Smile

I actually did my compression test a few times each time pulling at least 5 times. I took the cylinder head apart and found that the piston ring was actually stuck fast to the piston itself. I tried to work it free but ended up snapping the ring. So i ended up having to order a new ring anyway. One good thing is there is no scoring of the cylinder wall. Does anyone know of a torque spec for the two head bolts. I could use a normal torque for a 1/4 20 bolt. Or is it just tighten the crap out of it? Anyway thanks to all of you for your reply's.
 
  #9  
Old 10-29-18, 11:12 AM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 17,181
Received 17 Votes on 15 Posts
I've never tightened one to any specific torque, just tighten is good. Don't "tighten the crap out of it", it's a very small bolt going into aluminum. Just tighten it up reasonably.
 
  #10  
Old 10-29-18, 12:06 PM
Member
Thread Starter
Join Date: Oct 2018
Location: USA
Posts: 7
Received 0 Votes on 0 Posts
Yeah I knew its aluminum. I didn't mean I would tighten it till it stripped. I actually have 2 of these Craftsman blowers that were doing the same thing. So after finding this on this one I checked the older one that has been collecting dust in the shed after I replaced it with a newer model. And guess what, the same exact problem. Both have the piston rings sticking. So I looked into it and found they are known for this. So now what the hell do I do. Why does this keep happening. My fuel is mixed 40:1 mixture. What happens if I mix it to 50:1 like my Chainsaw? I know It will smoke more but will this help the sticking or make it worse?
 
  #11  
Old 10-29-18, 03:34 PM
Member
Join Date: Dec 2005
Location: USA
Posts: 502
Received 9 Votes on 9 Posts
50:1 is LESS oil than 40:1 so you would be using less lubrication and I don't think that would be a good idea.
 
  #12  
Old 10-30-18, 07:11 AM
Member
Thread Starter
Join Date: Oct 2018
Location: USA
Posts: 7
Received 0 Votes on 0 Posts
Smile

Thanks Ron53. Wow, I actually thought 50:1 was better. But thinking about it now, you are correct.
 
  #13  
Old 10-31-18, 04:54 AM
Member
Join Date: Oct 2015
Location: Ct.,USA
Posts: 1,180
Received 28 Votes on 24 Posts
Don't know how you verified "good spark" but i would try a new spark plug.
 
  #14  
Old 11-01-18, 01:16 PM
Member
Thread Starter
Join Date: Oct 2018
Location: USA
Posts: 7
Received 0 Votes on 0 Posts
I verified the spark was good by grounding the plug against the metal chassis and pulling the cord. The plug had plenty of spark. It was also a new plug that i installed earlier.
 
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
 
Ask a Question
Question Title:
Description: