Engine issue

Reply

  #1  
Old 06-21-08, 03:08 PM
Member
Thread Starter
Join Date: Sep 2006
Location: usa
Posts: 29
Engine issue

I have a 1998 MTD riding mower with a 17.5 BS engine. Today while cutting the lawn, it make a loud noice and came to a sudden stop. When I try to start it the starter turns the engine 2 or 3 time faster than normal and nothing happens. I removed the spark plug and stuck a plastic straw into the hole about 3 inches. When I turned the engine over with my hand I didn't feel the piston contact the straw. Next I placed my finger over the hole and turned the engine over with the starter, there was no compression at all. Both ends of the crank turn. Do I have a broken rod?
Thanks for your time.
 
Sponsored Links
  #2  
Old 06-21-08, 04:01 PM
Member
Join Date: May 2006
Location: Iowa!!!!!
Posts: 3,728
Broken rod or piston wristpin or displaced connecting rod cap. It all amounts to taking the engine apart.
 
  #3  
Old 06-21-08, 08:24 PM
Member
Join Date: Dec 2006
Location: usa
Posts: 1,365
to be sure that its a broken rod remove the cylinder head and have a look. sense its a 4 cycle engine the piston is off center to the sparkplug so its not going to hit the straw.
 
  #4  
Old 06-22-08, 12:40 AM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 16,818
It will hit the straw if it's all together. I agree, sounds like it's time to open up the engine, or repower with another one. Did it run out of oil?
 
  #5  
Old 06-22-08, 03:54 AM
Member
Thread Starter
Join Date: Sep 2006
Location: usa
Posts: 29
Yes it had plenty of oil, Mobile1 synthetic. I don't think it will be worth putting that type of money and effort into a 10 year old mower. I'm sure with all the related issues(damaged cylinder, crank, head) it would get into $300 -$500 bucks to get it right again. It can be replaced for a $1000, about a $100 more than it cost new. Thanks for all of your opinions.
 
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