Gents,
I haven't posted for a while but something new happened.
I have a carb cough when rolling throttle off then back on slowly the first 1/4 turn. It happens in all gears, at all speeds, under all loads, warm or cold engine (worse when cold engine).
I ride at sea level in Vancouver, BC (i.e. Pacific northwest climate).
I just rode the coughing 2002 FXDL to Vegas and around the southwest desert for a week. The first day the normal regular cough happened with the normal frequency, 5 to 10 times every tank of gas. Same the second day until we got to Ely, NV. From then on not a single cough for 5.5 days of riding from Vegas to Roswell to Tombstone, Phoenix and back to Vegas. High elevations, dry air, day temps in the 80's etc. We left Vegas and by Idaho the cough was back with the same old frequency.
One solution to the cough is to ride with enricher out 1/3 all the time.
The other solution to the cough is to move to Vegas.
Since these are not viable options, what jetting/mixture/washer settings do you think would improve the coughing for riding in the Pacific Northwest?
The desert had high elevation, hotter and probably dryer air.
In British Columbia the coastal air is cool and probably more saturated. The BC interior climate is dryer and hotter with higher elevations. The cough is rarer in those climates.
Is there a guide for tuning to different climates? I want to eliminate the cough in the coastal areas even if it means slightly lower mpg in the interior. I get 45 mpg with the current configuration. Stage 1, CV carb from prior owner with I believe 46 pilot jet. I tried a stock 45 last summer with no improvement. Idle mix screw set where it runs best. I can't remember exactly but between 1 and 3/4 to 3 turns out.
Keep in mind that no coughing occurred in the desert conditions with this configuration.
Thanks
I haven't posted for a while but something new happened.
I have a carb cough when rolling throttle off then back on slowly the first 1/4 turn. It happens in all gears, at all speeds, under all loads, warm or cold engine (worse when cold engine).
I ride at sea level in Vancouver, BC (i.e. Pacific northwest climate).
I just rode the coughing 2002 FXDL to Vegas and around the southwest desert for a week. The first day the normal regular cough happened with the normal frequency, 5 to 10 times every tank of gas. Same the second day until we got to Ely, NV. From then on not a single cough for 5.5 days of riding from Vegas to Roswell to Tombstone, Phoenix and back to Vegas. High elevations, dry air, day temps in the 80's etc. We left Vegas and by Idaho the cough was back with the same old frequency.
One solution to the cough is to ride with enricher out 1/3 all the time.
The other solution to the cough is to move to Vegas.
Since these are not viable options, what jetting/mixture/washer settings do you think would improve the coughing for riding in the Pacific Northwest?
The desert had high elevation, hotter and probably dryer air.
In British Columbia the coastal air is cool and probably more saturated. The BC interior climate is dryer and hotter with higher elevations. The cough is rarer in those climates.
Is there a guide for tuning to different climates? I want to eliminate the cough in the coastal areas even if it means slightly lower mpg in the interior. I get 45 mpg with the current configuration. Stage 1, CV carb from prior owner with I believe 46 pilot jet. I tried a stock 45 last summer with no improvement. Idle mix screw set where it runs best. I can't remember exactly but between 1 and 3/4 to 3 turns out.
Keep in mind that no coughing occurred in the desert conditions with this configuration.
Thanks