MVVS Support Get support from 3 qualified MVVS Forum Hosts. Dar Zeelon, representative from Israel. David Moen, representative from Canada. Pe Reivers, representative from Netherlands.

Exhaust residue.....


Old 09-14-2012, 02:50 AM
Thread Starter
Join Date: Nov 2011
Location: NottinghamNottinghamshire, UNITED KINGDOM
Posts: 54
My Gallery
My Models
My Feedback
Default Exhaust residue.....

I have a 35cc MVVS gas engine that's only had about 4 hrs running in total and is still slighlty rich. I'm using a 1:40 oil/petrol ratio and the engine appears to be running well but the exhaust residue is thick, black, and has a sticky consistency. I am I right in assuming the residue is caused by the slightly rich settings still? The plug is a nice 'sand' color with no significant oily coloration and I'm using a high quality spec 2stroke oil.

Thanks Bob V
BobV1700 is offline  
Reply With Quote
Old 08-15-2015, 09:14 PM
cymaz's Avatar
Join Date: Aug 2007
Location: UK
Posts: 681
My Gallery
My Models
My Feedback

Sounds correct...I am running in an engine on 20:1 in the plane. I have spots of black all over the bottom. At 32:1 it's not bad at all.
cymaz is offline  
Reply With Quote

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

Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service