VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

  #1  
Old 10-08-2018, 01:17 PM
smt6 smt6 is offline
 
Join Date: Apr 2013
Location: SoCal
Posts: 103
Default AOG

Stuck AOG at SNA. Engine fires but then chokes out. All the obvious has been checked. O-360 with dual electric ign. Out of ideas. Any help?
Reply With Quote
  #2  
Old 10-08-2018, 01:20 PM
N941WR's Avatar
N941WR N941WR is offline
 
Join Date: Jan 2005
Location: SC
Posts: 11,594
Default

Which ignition?

If P-mags, give me a call. (Check your PM's.)
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
Reply With Quote
  #3  
Old 10-08-2018, 01:54 PM
airguy's Avatar
airguy airguy is offline
 
Join Date: Oct 2006
Location: Garden City, Tx
Posts: 4,317
Default

What do you mean by "chokes out"? Too rich to run?
__________________
Greg Niehues - VAF 2018 dues paid
Garden City, TX
N16GN flying! http://websites.expercraft.com/airguy/
Built an off-plan 9A with too much fuel and too much HP. Should drop dead any minute now.
Reply With Quote
  #4  
Old 10-08-2018, 02:15 PM
N941WR's Avatar
N941WR N941WR is offline
 
Join Date: Jan 2005
Location: SC
Posts: 11,594
Default

Quote:
Originally Posted by airguy View Post
What do you mean by "chokes out"? Too rich to run?
I just got off the phone with him.

The engine starts right up but dies as as if it is fuel starved as the RPM's start to rise.

He has an Ellison throttle body and dual Fly Efii system 32 ignitions.

I've got no experience with either.
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
Reply With Quote
  #5  
Old 10-08-2018, 03:22 PM
flightlogic's Avatar
flightlogic flightlogic is offline
 
Join Date: Nov 2013
Location: Prescott, AZ
Posts: 1,483
Default

Is there a gascolator in the system? Possible fuel blockage...
Pull the fuel caps and see if there is a vacuum...
__________________
"Kindness is never a bad plan."

Work bio: Avionics tech support; ATP rated in planes.Helicopter rated, balloon instructor, seaplanes and for grins, Phantom Drone pilot. Instructor for air medical and law enforcement tactical radio systems. Fly my RV9A to work every week. Janitor when and as needed.
Reply With Quote
  #6  
Old 10-08-2018, 04:14 PM
smt6 smt6 is offline
 
Join Date: Apr 2013
Location: SoCal
Posts: 103
Default

Quote:
Originally Posted by flightlogic View Post
Is there a gascolator in the system? Possible fuel blockage...
Pull the fuel caps and see if there is a vacuum...
There is a gascolator. The gascolator drains well when I sump fuel.
Reply With Quote
  #7  
Old 10-08-2018, 04:15 PM
smt6 smt6 is offline
 
Join Date: Apr 2013
Location: SoCal
Posts: 103
Default

Still looking for ideas.
Reply With Quote
  #8  
Old 10-08-2018, 04:16 PM
smt6 smt6 is offline
 
Join Date: Apr 2013
Location: SoCal
Posts: 103
Default

Getting as high as 1300rpm prior to engine quitting
Reply With Quote
  #9  
Old 10-08-2018, 04:39 PM
oaklandaviator oaklandaviator is offline
 
Join Date: Dec 2014
Location: Somerville, Tn and Little Rock, Ar
Posts: 64
Default Mixture cable

Is the mixture cable attached and going full throw both ways? If so, try pulling the filter screen which is under the fuel inlet of the Ellison. Ensure good fuel flow with the line disconnected. Look up the throat and ensure the mixture tube rotates when the mixture control is moved. Holes point down at cutoff and are 90 degrees at full rich. In that same vein, ensure the mixture lever on the Ellison has not come loose. It should be safetied, but you never know. That could cause the mixture tube not to rotate.

If it's an older EFS 4-5 (O-360) or any EFS-4 there should be a small tube running from the bottom of the bell inlet to the regulator. I believe the newer EFS 4-5 have this incorporated internally so wouldn't apply.
Just a few thoughts.

Last edited by oaklandaviator : 10-08-2018 at 04:45 PM. Reason: Additions
Reply With Quote
  #10  
Old 10-08-2018, 04:55 PM
n18pf's Avatar
n18pf n18pf is offline
 
Join Date: Mar 2006
Posts: 46
Default Induction leak?

Check your induction system for a leak. For example one of the hose clamps may have come loose and slipped off the induction tube. You'll want to check all four cylinders. If you are sucking air the mixture will go lean and the engine may die. Although usually it runs rough before it dies.

Also check the fuel lines. Remove the line from the throttle body and see if it flows properly. You can't tell if the gascolator is plugged by draining the gascolator. I believe the screen is on the other side of the drain. Personally I would pull the gascolator screen and inspect it visually. Also is there a screen in the throttle body like there is in a carburator? If so visually inspect that too.

Just my $0.02 worth (and probably worth much less than that!)

Good luck!
__________________
Paul A. Fisher
RV-7A N18PF
Q-200 N17PF
APRS track
Reply With Quote
Reply


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 04:22 AM.


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.