gm280
Supreme Mariner
- Joined
- Jun 26, 2011
- Messages
- 14,605
Okay folks, I have a problem now for well over two years (no not that problem, I had that one since birth) and I have tried everything I know and everything the ?PROs? knows as well and still haven't found the answer. I own a 4-cycle small Troy Built Rotor Tiller. It is one of those really small 4 cycle engines about the size of a weed eater. However, it worked flawlessly for about a year or more. Then one day it started pumping out oil all over the ground from the crankcase. Now this crankcase only holds about 3.2ozs of regular oil to start with. And it will pump that oil out every time I refill it. So being how I've rebuilt more engines then I can remember and transmissions and differentials as well, I figured this would be an easy fix... SMH...NO it isn't! I completely disassembled that little engine, cleaned up everything, checked everything out and reassembled everything back now about three times. And the same problem still exists. So I contacted one of the Troy Built Pros via one of those Pay-Me-Now-and-I'll-Help-You-Fix-Your-Problem type websites?NEVER AGAIN! He suggested that I had over filled the crankcase to which I stated that I used the exact amount of oil suggested in their owner?s manual that being 3.2ozs exactly. I actually bought their exact oil in one of those little bottles to be very certain I was using the correct amount AND type. Then he stated that the carb was defective and I should buy a new one? Okay, looking at that little carb and knowing that it wasn?t the problem, I rebuilt the carb anyway only to have the exact same situation?SO I actually did buy a new carb (but knew it wouldn?t solve the problem, but it was their idea) and replaced the old carb?Same problem still exists. So then he told me that the engine had too much blow-by and needed new rings. So again I bought new rings and replaced them? You guess it, same problem yet. I did everything that he stated was my problem and then he wanted more money for other PROs to chime in. I stated NO and told him I wasn?t spending one more dime with them. It seems like the crank case is pressurizing and pumping the oil out the only breather line to the intake of the air cleaner area via a little rubber tube?about an 1/8? diameter in size. But for the life of me I can?t figure out why! This tube runs from the lower crankcase to the carb intake so that the engine would/will burn off any fumes, much like a PCV valve on a car engine. But why does it now pump all the oil out and never did initially? And for the record, I have another Troy Built yard trimmer product that has the exact same engine on it and it works perfect? Any takers to what the problem can be? I also thought the crankcase had another breather somewhere to relieve any pressure but I haven?t found one yet. Also, if you were to search on the web about this problem with this Troy Built engine you will also see that I am not the only one with this same problem. I?ve read pages of others wanting answers too? Any ideas I (we) could try? 
:grumpy: :blue:
:grumpy: :blue: 
