Home > VansAirForceForums

-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
w/a Donation

VAF on Twitter:

Go Back   VAF Forums > Model Specific > RV-12/RV-12iS
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Thread Tools Search this Thread Display Modes
Old 08-26-2022, 09:33 PM
RFSchaller RFSchaller is offline
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 3,402


Next time you inspect spark plugs see if they indicate a rich mixture from excess fuel.

Reply With Quote
Old 08-29-2023, 11:34 AM
NORDO Industries LLC NORDO Industries LLC is offline
Join Date: Jun 2021
Location: Bay Area
Posts: 31

Dredging this up…

My fuel consumption issue kept coming back intermittently. I did find that there was an issue where the tip of the cable controlling the choke could get snagged under a post and possibly not let it close all the way, but the issue persisted despite that fix. In the Rotax maintenance course, my instructor mentioned to be careful with the carb float bowls, as they're made of zinc and can be bent surprisingly easily.

I pulled both float bowls and the pins were visibly bent outwards, likely from a too-long piece of hose placed underneath the bowls on the drip tray for vibration dampening purposes (per KAI).

Compared to new bowls, one had the pins spread by 2mm, the other almost 3mm, and the brass guide pins looked quite shiny in spots. Marvel-Schebler epoxy floats were installed, and the tops/bottoms of the floats had a fair amount of brass residue on them.

Installed new bowls (which came with a new design and grey coating) and put new, stock Rotax floats in. So far so good.
Attached Thumbnails
Click image for larger version

Name:	IMG_6094.jpg
Views:	61
Size:	453.6 KB
ID:	47199  Click image for larger version

Name:	IMG_6090.jpeg
Views:	53
Size:	259.9 KB
ID:	47200  
Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -6. The time now is 12:05 PM.

The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.