FXDP stalling
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Intermediate
Joined: Sep 2010
Posts: 29
Likes: 0
From: Houston
FXDP stalling
My 01 FXDP was running great until i took the CV carb apart to re-jet for my Vance and Hines exhaust. I got a re-jet kit from CVperformance.com and re- jetted with the biggest main and idle jets first, but afterwards my bike would sputter and die after it warmed up but only when trying to accelerate, it would idle fine. Thinking it was getting to much fuel, I downsized to the smaller size main jet but it is still doing the same thing when it warms up. Any ideas what could be the problem or what I could check?
Road Warrior
Joined: Oct 2010
Posts: 1,554
Likes: 52
From: Ottawa Canada
check your slide diaphragm, then check accelerator pump diaphragm, lastly check your plugs, you may have fouled them while running it rich with the biggest jet, also check fuel air mixture screw under the rear of carb , should be somewhere between 2.5 and 3 turns out, any vacuum leaks check that also
one other common problem is the needle jet, is it installed correctely, it should protrude into the throat of the carburetor, check this page for proper installation http://www.cv-performance.com/harley...tuning-issues/
one other common problem is the needle jet, is it installed correctely, it should protrude into the throat of the carburetor, check this page for proper installation http://www.cv-performance.com/harley...tuning-issues/
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Intermediate
Joined: Sep 2010
Posts: 29
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From: Houston
The slide diaphragm and accelerator pump diaphragm were both replaced. I forgot to mention that after I rebuilt the carb the first time it was still leaking out of the float bowl, so I replaced it with another carb what was in fairly new condition, but before putting the carb on the bike I took it apart and put the new parts and the smaller jets in it. I will check that the both diaphragms are seated, and probably just replace the plugs.
Tourer
Joined: Nov 2011
Posts: 421
Likes: 4
From: Alabama
Sure sounds like the acellerator circuit. You sure you got that tiny O-ring back in it? Did you check float level and/or replace fuel shutoff valve on float?
I've dismantled/cleaned/rejetted the CV on my '04 FXDP twice with no such probs. But I didn't put a kit in it. Just swapped jets & raised the stock needle with some brass washers.
If all else fails, you might pull all the CV Perf stuff out & go back to square one when it last worked fine. If you started with the OEM 45 slow & 190 main, those are almost surely too lean but its a starting point. If it works with the OEM equip, then just start re-jetting till you eliminate the lean misfire/pop.
My FXDP is stock except for an open DK Customs 587 AC, and I have to run a 195 main & 50 slow with the OEM needle raised 0.041" to get it to run with a darn. But all bikes/carbs are diff.
Sorry couldn't help more. Good luck. Do you realize just how rare FXDP's are?
I've dismantled/cleaned/rejetted the CV on my '04 FXDP twice with no such probs. But I didn't put a kit in it. Just swapped jets & raised the stock needle with some brass washers.
If all else fails, you might pull all the CV Perf stuff out & go back to square one when it last worked fine. If you started with the OEM 45 slow & 190 main, those are almost surely too lean but its a starting point. If it works with the OEM equip, then just start re-jetting till you eliminate the lean misfire/pop.
My FXDP is stock except for an open DK Customs 587 AC, and I have to run a 195 main & 50 slow with the OEM needle raised 0.041" to get it to run with a darn. But all bikes/carbs are diff.
Sorry couldn't help more. Good luck. Do you realize just how rare FXDP's are?
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Road Master
Joined: Feb 2012
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From: bfe
I wish you were not 8 hours away I would have you bring it by , I really think carb is not set up right
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Thread Starter
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Intermediate
Joined: Sep 2010
Posts: 29
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From: Houston
Sure sounds like the acellerator circuit. You sure you got that tiny O-ring back in it? Did you check float level and/or replace fuel shutoff valve on float?
I've dismantled/cleaned/rejetted the CV on my '04 FXDP twice with no such probs. But I didn't put a kit in it. Just swapped jets & raised the stock needle with some brass washers.
If all else fails, you might pull all the CV Perf stuff out & go back to square one when it last worked fine. If you started with the OEM 45 slow & 190 main, those are almost surely too lean but its a starting point. If it works with the OEM equip, then just start re-jetting till you eliminate the lean misfire/pop.
My FXDP is stock except for an open DK Customs 587 AC, and I have to run a 195 main & 50 slow with the OEM needle raised 0.041" to get it to run with a darn. But all bikes/carbs are diff.
Sorry couldn't help more. Good luck. Do you realize just how rare FXDP's are?
I've dismantled/cleaned/rejetted the CV on my '04 FXDP twice with no such probs. But I didn't put a kit in it. Just swapped jets & raised the stock needle with some brass washers.
If all else fails, you might pull all the CV Perf stuff out & go back to square one when it last worked fine. If you started with the OEM 45 slow & 190 main, those are almost surely too lean but its a starting point. If it works with the OEM equip, then just start re-jetting till you eliminate the lean misfire/pop.
My FXDP is stock except for an open DK Customs 587 AC, and I have to run a 195 main & 50 slow with the OEM needle raised 0.041" to get it to run with a darn. But all bikes/carbs are diff.
Sorry couldn't help more. Good luck. Do you realize just how rare FXDP's are?
No I didn't realize they were rare. I've noticed I haven't seen too many out there, but I didn't know they were rare.
No they aren't wet. They look like plugs should.
I appreciate that. Like M&P340 suggested I'm just going to put the stock jets back in and clean the plugs real good and see how it goes. Wish me luck.
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