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noise, ping, rod knock, sportster

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  #11  
Old 22nd May 2018
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Quote:
Originally Posted by BradX13 View Post
I have a module behind the triangle cover. Also habe a video with the bike running with cover off and led blinking
So post up the model/brand of the ignition module...

If it has an LED, it is probably able to be timed to TDC... Once you confirm that, you'll be able to slightly retard the timing to shift the entire curves back a bit...

But we still need to know these items related to the carb as per chance it is still running lean...

1) What size pilot jet is in there?
2) How many turns out on the Idle Mixture Screw
3) What needle are you using?
4) Does this carb have any Dynojet parts?

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  #12  
Old 22nd May 2018
BradX13 BradX13 is offline
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I won't be able to check the carb till i get home. I know it has a SE stage 1 kit on it. The ignition module is SE also
https://youtu.be/02buN6c7KGc
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  #13  
Old 22nd May 2018
koolbreeze koolbreeze is offline
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From the sound of your posted videos, it seems more like a metallic ping/ring than ping/knock from pre-ignition related to a timing/fuel issue. Try to isolate where the sound is coming from, upper end, lower end, right or left side. If is doing it when warm, then things are expanding and clearances are getting greater.

How many miles are on the bike?

To check for a lean condition once warm pull the choke/enrichner on and see if it still makes the noise.
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  #14  
Old 22nd May 2018
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It looks like this:
https://secure.vulcanworks.net/store...rive-Cams.html
https://secure.vulcanworks.net/store...ne-Motors.html
http://vulcanworks.fileburst.com/ins...ition_inst.pdf

Do you have a mechanical advance under the pickup?

I'll be interested to see the ignition module under the triangle cover...

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  #15  
Old 22nd May 2018
BradX13 BradX13 is offline
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Quote:
Originally Posted by koolbreeze View Post
From the sound of your posted videos, it seems more like a metallic ping/ring that ping/knock from pre-ignition related to a timing/fuel issue. Try to isolate where the sound is coming from, upper end, lower end, right or left side. If is doing it when warm, then things are expanding and clearances are getting greater.

How many miles are on the bike?

To check for a lean condition once warm pull the choke/enrichner on and see if it still makes the noise.
It sounds like it's coming from the front jug. More so on the left side than the right using a screwdriver as a stethoscope . It has an aftermarket odometer with 15000 miles on it. Sound is most prominent while accelerating and goes away when decelerating
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  #16  
Old 23rd May 2018
BradX13 BradX13 is offline
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Quote:
Originally Posted by IXL2Relax View Post
Might be a clue - Moved from where?
Temperature change - Elevation change



1) What size pilot jet is in there?
2) How many turns out on the Idle Mixture Screw
3) What needle are you using?
4) Does this carb have any Dynojet parts?

Here's the Sportsterpedia section on the CV40 carb:
http://sportsterpedia.com/doku.php/t...40_carburetors

Carefully read over this... Then record all the parts in the carb - Take pictures if you can...

Beg/borrow/buy a timing light and clear plug for the timing hole - I would definitely check the timing...

Here's the Sportsterpedia section on timing:
http://sportsterpedia.com/doku.php/t...dels_thru_2003

Post the information and pictures here...


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My jets are a 185 and a 45. There's a lot of Corbin build up on the pistons
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  #17  
Old 23rd May 2018
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Quote:
Originally Posted by BradX13 View Post
My jets are a 185 and a 45. There's a lot of carbon build up on the pistons
Excessive carbon build-up can cause pinging - You might try running some Seafoam or water:
http://xlforum.net/forums/showthread.php?t=1558952

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  #18  
Old 25th May 2018
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Ran seafoam through the carb blew a bunch of white smoke out. This is how the engine sounds after warming up to 250. Are these normal sounds?
https://youtu.be/Q_Xkjzs47Jo
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  #19  
Old 25th May 2018
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Quote:
Originally Posted by BradX13 View Post
Ran seafoam through the carb blew a bunch of white smoke out. This is how the engine sounds after warming up to 250. Are these normal sounds?
https://youtu.be/Q_Xkjzs47Jo
I did not hear anything unusual there...

Is the ping still there?

Points (mechanical or magnetic) with mechanical advance will function - The right engine control module with VOES is capable of running a more specific curve to match your engine & alter the curve for the engine load while riding...

I'm still interested to know what control module you have under the triangle cover (next to the battery)???

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  #20  
Old 25th May 2018
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does it follow engine rpm even on decel??
a dude came over the other day and from a block away, i could tell he had lifter issues. totally unbelievable what some people will do?
long story short, the oil pump drive gear was messed up, should have taken a jpeg. he change the pump and fixed that but now a top end is due, smokes like a mosquito truck and oil out the pipes, surprised the plugs still fired with wet unburned oil on them. had to trailer it back to his house.
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