YS Engines Support Direct support from YS Performance Engines by Dave Shadel

110 fz sudden stop and compression on every stroke

Reply
Old 08-29-2017, 05:29 PM
  #1
wood
Thread Starter
 
Join Date: Dec 2001
Location: Rice Lake, WI
Posts: 455
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default 110 fz sudden stop and compression on every stroke

Hi all,

I just put a couple flights on running really good and smokey and had a sudden failure of some sort while in the air. Sounded like a glow plug popped out. I landed it perfectly.

So I checked glow plug and it is in there and looks like it is OK. I flipped it over and it seems like it has compression on every revolution. I did not spin it to start it up, but I did spin it fast without power to glow plug and it sounds very different.

Where do I start trouble shooting this one? I'm thinking of pulling the valve cover off and checking to see if I broke a rocker or something.

Thanks,
Wood
wood is offline  
Reply With Quote
Old 08-29-2017, 06:02 PM
  #2
kenh3497
 
kenh3497's Avatar
 
Join Date: Jan 2010
Location: Rockwell, IA
Posts: 1,353
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Sounds to me like a push rod slipped out of place or something similar. Valve train related in any case.

Ken
kenh3497 is offline  
Reply With Quote
Old 08-30-2017, 06:07 AM
  #3
wood
Thread Starter
 
Join Date: Dec 2001
Location: Rice Lake, WI
Posts: 455
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default broken rocker arm bolt

So the rocker arm screw broke off and part of it is stuck in the head. It is a small screw, is there any way to get this out? Does this screw have RED thread locker on it from the factory?

What are my options here?

Thanks,
Darin
Attached Thumbnails
Click image for larger version

Name:	20170829_225834 (1).jpg
Views:	33
Size:	2.07 MB
ID:	2229862  
wood is offline  
Reply With Quote
Old 08-30-2017, 12:50 PM
  #4
rgburrill
 
rgburrill's Avatar
 
Join Date: Dec 2010
Location: Trumbull, CT
Posts: 1,828
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Get a very small easy out.
rgburrill is offline  
Reply With Quote
Old 09-02-2017, 08:32 PM
  #5
kenh3497
 
kenh3497's Avatar
 
Join Date: Jan 2010
Location: Rockwell, IA
Posts: 1,353
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

I would use a Dremel with a thin cut off wheel and make a slot across the screw. Then a small screwdriver should back it out.Some heat just before removal should soften any locking compound. Don't be afraid to get it good and hot. I would probably use a heat gun and not a torch to avoid damage to the valve springs. Safest would be to remove the head and disassemble the valves from the head then have at the screw .

Ken

PS. With the head removed heat could be applied from the piston side without fear of overheating the valve springs.
kenh3497 is offline  
Reply With Quote
Reply


Thread Tools
Search this Thread
Display Modes

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



All times are GMT -8. The time now is 04:11 AM.