Tuning Tips and Trouble Shooting
http://www.carcraft.com/techarticles/cc ... index.html
http://www.barrygrant.com/fromBarryGran ... ual-08.pdf
http://www.barrygrant.com/demon/default.aspx?page=16
http://www.barrygrant.com/demon/default.aspx?page=5
http://www.barrygrant.com/demon/default.aspx?page=28
http://www.barrygrant.com/demon/default.aspx?page=29
http://www.barrygrant.com/demon/default.aspx?page=38
Chapter
Symptom Remedy
Fuel comes out of vent tube or runs out A) Lower float level
B) Decrease fuel pressure
C) Remove, clean/replace needle-&-seat
D) Inspect float to ensure it's moving freely
Backfires or Pops through carburetor A) Open idle-mixture screws
B) Increase squirter size
C) Increase jet size
D) Raise float level
Backfires or Pops through exhaust A) Lower float level
B) Decrease fuel pressure
C) Decrease jet size
D) Readjust butterfly position, primary & secondary
Engine won't start A) Prime carburetor with fuel
B) Pump squirters to get fuel flowing
C) Check ignition timing
Fuel leaks from throttle shafts A) Lower float level
B) Decrease fuel pressure
C) Readjust butterfly position, primary & secondary
Is rich at idle A) Increase initial timing
B) Go in on mixture screws
C) Readjust butterfly positions
D) Lower float level
E) Decrease fuel pressure
Stumbles under light acceleration A) Open mixture screws
B) Readjust butterfly positions
C) Raise float level
Stumbles under hard acceleration A) Readjust butterfly position
B) Increase squirter size
Won't return to idle A) Increase initial timing
B) Readjust butterflies
Surges at part throttle A) Open idle-mixture screws
B) Open primary butterflies & close secondary
C) Raise float level
D) Increase jet size
Emits black smoke under hard acceleration A) Lower float level
B) Decrease fuel pressure
C) Decrease jet size
READ THRU THESE THREADS AND SUB LINKED INFO
https://www.youtube.com/watch?v=HoR0uZL ... AABE37CC30
viewtopic.php?f=55&t=211
viewtopic.php?f=55&t=635
viewtopic.php?f=44&t=621
viewtopic.php?f=55&t=109&p=6685&hilit=+tuning#p6685
viewtopic.php?f=55&t=1790
viewtopic.php?f=44&t=777
http://www.carcraft.com/techarticles/cc ... index.html
http://www.barrygrant.com/fromBarryGran ... ual-08.pdf
http://www.barrygrant.com/demon/default.aspx?page=16
http://www.barrygrant.com/demon/default.aspx?page=5
http://www.barrygrant.com/demon/default.aspx?page=28
http://www.barrygrant.com/demon/default.aspx?page=29
http://www.barrygrant.com/demon/default.aspx?page=38
Chapter
Symptom Remedy
Fuel comes out of vent tube or runs out A) Lower float level
B) Decrease fuel pressure
C) Remove, clean/replace needle-&-seat
D) Inspect float to ensure it's moving freely
Backfires or Pops through carburetor A) Open idle-mixture screws
B) Increase squirter size
C) Increase jet size
D) Raise float level
Backfires or Pops through exhaust A) Lower float level
B) Decrease fuel pressure
C) Decrease jet size
D) Readjust butterfly position, primary & secondary
Engine won't start A) Prime carburetor with fuel
B) Pump squirters to get fuel flowing
C) Check ignition timing
Fuel leaks from throttle shafts A) Lower float level
B) Decrease fuel pressure
C) Readjust butterfly position, primary & secondary
Is rich at idle A) Increase initial timing
B) Go in on mixture screws
C) Readjust butterfly positions
D) Lower float level
E) Decrease fuel pressure
Stumbles under light acceleration A) Open mixture screws
B) Readjust butterfly positions
C) Raise float level
Stumbles under hard acceleration A) Readjust butterfly position
B) Increase squirter size
Won't return to idle A) Increase initial timing
B) Readjust butterflies
Surges at part throttle A) Open idle-mixture screws
B) Open primary butterflies & close secondary
C) Raise float level
D) Increase jet size
Emits black smoke under hard acceleration A) Lower float level
B) Decrease fuel pressure
C) Decrease jet size
READ THRU THESE THREADS AND SUB LINKED INFO
https://www.youtube.com/watch?v=HoR0uZL ... AABE37CC30
viewtopic.php?f=55&t=211
viewtopic.php?f=55&t=635
viewtopic.php?f=44&t=621
viewtopic.php?f=55&t=109&p=6685&hilit=+tuning#p6685
viewtopic.php?f=55&t=1790
viewtopic.php?f=44&t=777