Sporty Spittin and Coughin!
Thread Starter
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Intermediate
Joined: Mar 2010
Posts: 32
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From: Asbury Park, NJ
Sporty Spittin and Coughin!
Hey everyone! Seems only trouble has me posting here unfortunately! Youve helped me out tremendously before and I hope it will be the same this time around.
Ive cycled through several ACs. Starting with AN Big Sucker2, thing was massive and busted my shin a couple times on bumpy roads, the TC Bros dog dish, worked great and bike ran perfect, until I eyed up. BCM Custom Moto Pinner. Man the thing is a work of art but now Im in a bit of trouble.
while I had everything off I decided to route the head bolts to a breather filter via couple rubber lines and a T splitter. Out of site, out of mind, and no oil on the jugs.
While doing that, I disconnected the V splitter of my VOES, flipped it and re-attached to hide lines a little further (not kinked at all).
Lastly I mounted the BCM AC and adjusted the air/fuel mix by turning the screw all the way in until it died and then out 2.5 to start testing, I went all the way to 3.5 turns out and at WOT it just dies as if it hits a rev limiter! If I gradually open the throttle it will take it all the way up the power band and accelerate as it should but if I just whip it, it sounds like Im just bouncing off the rev limiter.
My question are:
Am I not getting enough fuel and need to rejet? (Currently running V&H Straight shots, no baffles and the Pinner AC)
Do I have an intake or carb leak?
Did my VOES take a 💩?
I will be putting on my old AC to see if I can isolate the issue some more but ANY help, advice or insight would be greatly appreciated!
Thanks all!
Gary
03 XL1200C
Ive cycled through several ACs. Starting with AN Big Sucker2, thing was massive and busted my shin a couple times on bumpy roads, the TC Bros dog dish, worked great and bike ran perfect, until I eyed up. BCM Custom Moto Pinner. Man the thing is a work of art but now Im in a bit of trouble.
while I had everything off I decided to route the head bolts to a breather filter via couple rubber lines and a T splitter. Out of site, out of mind, and no oil on the jugs.
While doing that, I disconnected the V splitter of my VOES, flipped it and re-attached to hide lines a little further (not kinked at all).
Lastly I mounted the BCM AC and adjusted the air/fuel mix by turning the screw all the way in until it died and then out 2.5 to start testing, I went all the way to 3.5 turns out and at WOT it just dies as if it hits a rev limiter! If I gradually open the throttle it will take it all the way up the power band and accelerate as it should but if I just whip it, it sounds like Im just bouncing off the rev limiter.
My question are:
Am I not getting enough fuel and need to rejet? (Currently running V&H Straight shots, no baffles and the Pinner AC)
Do I have an intake or carb leak?
Did my VOES take a 💩?
I will be putting on my old AC to see if I can isolate the issue some more but ANY help, advice or insight would be greatly appreciated!
Thanks all!
Gary
03 XL1200C
HDF Community Team
Joined: Dec 2011
Posts: 8,512
Likes: 3,925
From: San Diego, CA
Intake leak is my guess. Have you changed the seals to the heads and the carb seal to the manifold. 2.5 turns should be about right, 3.5 too many. What jets are in your carb now? Doubt the VOES is bad. Did you take the top off the carb (needle/slide)?
John
John
Last edited by John Harper; Apr 1, 2018 at 07:19 AM.
Thread Starter
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Intermediate
Joined: Mar 2010
Posts: 32
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From: Asbury Park, NJ
Intake leak?
I didnt touch heads or seals at all. Currently its a bone stock CV carb right out the factory. I didnt open up the carb at all other than to check the butterfly to make sure it opens and closes with throttle.
Should I do the propane test around the seals? Any other tricks to find a potential leak?
Thanks and happy waster Sunday!
Club Member
Joined: Feb 2007
Posts: 16,320
Likes: 306
From: Boynton Beach, FloriDuh
Currently its a bone stock CV carb right out the factory.
HDF Community Team
Joined: Dec 2011
Posts: 8,512
Likes: 3,925
From: San Diego, CA
If you haven't opened it up, your pilot jet/idle mixture passages may be gummed up, the accelerator nozzle too, as cHarley mentions. If your idle mix needle isn't doing anything that could be a symptom too.
John
John
Thread Starter
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Intermediate
Joined: Mar 2010
Posts: 32
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From: Asbury Park, NJ
If you've added a higher flowing AC and exhaust, you'll likely need to increase the sizes of the carb jets. Typical starting sizes for a 1200 are #45 pilot & #180 main.
Thread Starter
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Intermediate
Joined: Mar 2010
Posts: 32
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From: Asbury Park, NJ
This is the AC I have NOW and it runs not so good...http://bcmmoto.bigcartel.com/product/pinner-ac-cv
This is the AC I HAD and it ran perfect but left welts in my shin...its literally 4 times larger!!!
http://www.arlenness.com/prodcat/air10.asp
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Cruiser
Joined: Nov 2015
Posts: 165
Likes: 14
From: rockford
So this ran great till you put on new aircleaner and flipped VOES correct? Doubt if aircleaner did this so lets see if VOES is bad. here is test procedure out Harley Manual for 95-03
Start the engine and allow it to idle.
b. Disconnect the VOES vacuum hose from the carbu
retor
(Figure 92) with the engine idling at 1000-1050
rpm. Maintain this engine rpm when performing
substep c.
c. Plug the carburetor VOES port. With the port
blocked, the engine speed should decrease and the ig
nition
timing should retard—check with the timing
light. When the vacuum hose is reconnected to the
VOES port, the engine speed should increase.
d. If the engine failed to operate as described in
substep c, check the VOES wire connection at the
ignition module. Also check the VOES ground wire
for looseness or damage. If the wire connections are
okay, test the VOES switch as described in Chapter
Twelve.
Start the engine and allow it to idle.
b. Disconnect the VOES vacuum hose from the carbu
retor
(Figure 92) with the engine idling at 1000-1050
rpm. Maintain this engine rpm when performing
substep c.
c. Plug the carburetor VOES port. With the port
blocked, the engine speed should decrease and the ig
nition
timing should retard—check with the timing
light. When the vacuum hose is reconnected to the
VOES port, the engine speed should increase.
d. If the engine failed to operate as described in
substep c, check the VOES wire connection at the
ignition module. Also check the VOES ground wire
for looseness or damage. If the wire connections are
okay, test the VOES switch as described in Chapter
Twelve.
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Thread Starter
|
Intermediate
Joined: Mar 2010
Posts: 32
Likes: 0
From: Asbury Park, NJ
Excellent!
So this ran great till you put on new aircleaner and flipped VOES correct? Doubt if aircleaner did this so lets see if VOES is bad. here is test procedure out Harley Manual for 95-03
Start the engine and allow it to idle.
b. Disconnect the VOES vacuum hose from the carbu
retor
(Figure 92) with the engine idling at 1000-1050
rpm. Maintain this engine rpm when performing
substep c.
c. Plug the carburetor VOES port. With the port
blocked, the engine speed should decrease and the ig
nition
timing should retardcheck with the timing
light. When the vacuum hose is reconnected to the
VOES port, the engine speed should increase.
d. If the engine failed to operate as described in
substep c, check the VOES wire connection at the
ignition module. Also check the VOES ground wire
for looseness or damage. If the wire connections are
okay, test the VOES switch as described in Chapter
Twelve.
Start the engine and allow it to idle.
b. Disconnect the VOES vacuum hose from the carbu
retor
(Figure 92) with the engine idling at 1000-1050
rpm. Maintain this engine rpm when performing
substep c.
c. Plug the carburetor VOES port. With the port
blocked, the engine speed should decrease and the ig
nition
timing should retardcheck with the timing
light. When the vacuum hose is reconnected to the
VOES port, the engine speed should increase.
d. If the engine failed to operate as described in
substep c, check the VOES wire connection at the
ignition module. Also check the VOES ground wire
for looseness or damage. If the wire connections are
okay, test the VOES switch as described in Chapter
Twelve.
HDF Community Team
Joined: Dec 2011
Posts: 8,512
Likes: 3,925
From: San Diego, CA
You can check the VOES with a multimeter and vacuum/fuel pump tester as well. The resistance between the leads should switch with a certain amount of vacuum supplied to the VOES vacuum port. I assume "infinity" (open) to some low number (closed) of Ohms. It's basically an on/off switch triggered by vacuum. I still can't see how it's killing the engine, it just retards the spark a tad under load.
I think it's what Chapter Twelve in norman's post refers to.
Are you sure your new aircleaner or gasket is not blocking the "air bleed" port on the carburetor mouth? I don't think anyone has mentioned that yet.
That new aircleaner looks nice, seems they come from my city.
John
I think it's what Chapter Twelve in norman's post refers to.
Are you sure your new aircleaner or gasket is not blocking the "air bleed" port on the carburetor mouth? I don't think anyone has mentioned that yet.
That new aircleaner looks nice, seems they come from my city.
John
Last edited by John Harper; Apr 3, 2018 at 07:09 PM.