running not quite right

1tinner · Aug 30th, 2009, 08:51 PM

I have a 98 fxsts. just had a crane fireball cam installed this spring. Also has arlen ness air filter....python3 exhaust...still has stock cv carb with only minor work done to it...still has original stock ignition module...also bike has 27000 miles...now to the problem....bike has intermittent hesitations and popping out of exh. at higher rpm;s...slower produces some jerking and hesitations...just had new intake seals installed and when these were done the carb was taken off and cleaned..for 2 days it ran like a top..then back to problems listed above..would appreciate any ideas and opinions..if anyone needs any additonal info please let me know...thanks

glider · Aug 30th, 2009, 08:59 PM

Possible you have something in the tank that needs to be cleaned out.

It should also be rejetted to run properly. The stock jetting will not cut it with your mods.

*Twin Cam CV Carb Rejet Suggestions - Harley Davidson Community

1tinner · Aug 30th, 2009, 09:25 PM

thanks for reply Glider....actually the bike has been dyno tested and appropriate jets supposedly installed..im still wondering about that....i did install an inline fuel filter right after petcock and have been thinking about taking it back off..dont think i had problems before i put that on...could it be?

vtbikers · Aug 30th, 2009, 09:56 PM

I think Gliders right. I would check the filter on the petcock. Does it get worse on reserve?

1tinner · Aug 30th, 2009, 10:00 PM

i have had to turn it to reserve once with the problem....and yes i do believe it did get worse..now that i think of it the lower the tank gets the worse i believe it does get

vtbikers · Aug 30th, 2009, 10:05 PM

Sound like you have a bunch of trash in the tank and the screen in the tank is cloged

1tinner · Aug 30th, 2009, 10:50 PM

i will surely give that a look....thanks for ideas

1tinner · Sep 1st, 2009, 08:55 PM

took screen out of tank and cleaned.... replaced it and same symptoms...anybody with any other ideas?

glider · Sep 1st, 2009, 09:42 PM

Remove the inline filter you installed. Could be enough to slow the fuel delivery. Remember the fuel is gravity flow, no pump and a slow moving fuel filter could be the problem with fuel supply.

vtbikers · Sep 1st, 2009, 09:46 PM

What do the spark plugs look like? You should rejet the carb. And maybe check the ignition timing if it has not been done.

Aug 30th, 2009, 08:51 PM	#1
1tinner New Family Ride: 1998 FXSTS Join Date: Aug 30th, 2009 Posts: 5	running not quite right I have a 98 fxsts. just had a crane fireball cam installed this spring. Also has arlen ness air filter....python3 exhaust...still has stock cv carb with only minor work done to it...still has original stock ignition module...also bike has 27000 miles...now to the problem....bike has intermittent hesitations and popping out of exh. at higher rpm;s...slower produces some jerking and hesitations...just had new intake seals installed and when these were done the carb was taken off and cleaned..for 2 days it ran like a top..then back to problems listed above..would appreciate any ideas and opinions..if anyone needs any additonal info please let me know...thanks

Aug 30th, 2009, 08:59 PM	#2
glider Community Liaison Ride: 07 Road King Classic Join Date: Jun 21st, 2007 Posts: 20,467 My Mood:	Re: running not quite right Possible you have something in the tank that needs to be cleaned out. It should also be rejetted to run properly. The stock jetting will not cut it with your mods. Twin Cam CV Carb Rejet Suggestions - Harley Davidson Community __________________ Psssst! Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. click me!>>Self Help Information and Tips*<< click me!

Aug 30th, 2009, 09:25 PM	#3
1tinner New Family Ride: 1998 FXSTS Join Date: Aug 30th, 2009 Posts: 5	Re: running not quite right thanks for reply Glider....actually the bike has been dyno tested and appropriate jets supposedly installed..im still wondering about that....i did install an inline fuel filter right after petcock and have been thinking about taking it back off..dont think i had problems before i put that on...could it be?

Aug 30th, 2009, 09:56 PM	#4
vtbikers Contributor$ Ride: 2006 FLHTCI Join Date: Aug 5th, 2009 Location: Vermont Posts: 168 My Mood:	Re: running not quite right I think Gliders right. I would check the filter on the petcock. Does it get worse on reserve?

Aug 30th, 2009, 10:00 PM	#5
1tinner New Family Ride: 1998 FXSTS Join Date: Aug 30th, 2009 Posts: 5	Re: running not quite right i have had to turn it to reserve once with the problem....and yes i do believe it did get worse..now that i think of it the lower the tank gets the worse i believe it does get

Aug 30th, 2009, 10:05 PM	#6
vtbikers Contributor$ Ride: 2006 FLHTCI Join Date: Aug 5th, 2009 Location: Vermont Posts: 168 My Mood:	Re: running not quite right Sound like you have a bunch of trash in the tank and the screen in the tank is cloged

Aug 30th, 2009, 10:50 PM	#7
1tinner New Family Ride: 1998 FXSTS Join Date: Aug 30th, 2009 Posts: 5	Re: running not quite right i will surely give that a look....thanks for ideas

Sep 1st, 2009, 08:55 PM	#8
1tinner New Family Ride: 1998 FXSTS Join Date: Aug 30th, 2009 Posts: 5	Re: running not quite right took screen out of tank and cleaned.... replaced it and same symptoms...anybody with any other ideas?

Sep 1st, 2009, 09:42 PM	#9
glider Community Liaison Ride: 07 Road King Classic Join Date: Jun 21st, 2007 Posts: 20,467 My Mood:	Re: running not quite right Remove the inline filter you installed. Could be enough to slow the fuel delivery. Remember the fuel is gravity flow, no pump and a slow moving fuel filter could be the problem with fuel supply. __________________ Psssst! Please stop by the "self help section" for maintenance tips, diagnostic codes and much more. click me!>>Self Help Information and Tips<< click me!

Sep 1st, 2009, 09:46 PM	#10
vtbikers Contributor$ Ride: 2006 FLHTCI Join Date: Aug 5th, 2009 Location: Vermont Posts: 168 My Mood:	Re: running not quite right What do the spark plugs look like? You should rejet the carb. And maybe check the ignition timing if it has not been done.

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running not quite right

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