Welcome to the DoItYourself Forums!

To post questions, help other DIYers and reduce advertising (like the one on your left), join our DIY community. It's free!

Mechanical Compression Release


Ham's Avatar
Member

Join Date: Jan 2005
Posts: 42

05-04-05, 09:14 AM   #1  
Mechanical Compression Release

I'm gonna ask a stupid question. If the MCR on a Tecumseh OHV 13 hp engine breaks will the valves still move? I have not been inside one of these to know exactly how they work.

 
Sponsored Links
goldstar's Avatar
Forum Topic Moderator

Join Date: Oct 2002
Posts: 4,286
OH

05-04-05, 05:48 PM   #2  
I didn't know modern engines had mechanical compression releases.
Have'nt seen one since my old Whizzer motorbike. That gives away my age.
I would think that, if the internal portion did not jam something up, the motor would still run.

 
cheese's Avatar
Forum Topic Moderator

Join Date: Jul 2001
Posts: 16,573
GA

05-04-05, 11:44 PM   #3  
Hello Ham!

Yes, if the compression release breaks, the valves will still move. Are your valves not moving?


"Who is John Galt?" - Ayn Rand (Atlas Shrugged)

God bless!

 
Ham's Avatar
Member

Join Date: Jan 2005
Posts: 42

05-05-05, 06:19 AM   #4  
Yes, they are moving. The engine seems to drag when trying to start, but when I take the plug out it will spin like it should. I was wondering if the MCR would cause it to do this?

 
cheese's Avatar
Forum Topic Moderator

Join Date: Jul 2001
Posts: 16,573
GA

05-05-05, 02:12 PM   #5  
It can, but I would start by adjusting the valves. If the valve clearances are too loose, the comp release won't be able to work.


"Who is John Galt?" - Ayn Rand (Atlas Shrugged)

God bless!

 
Search this Thread