Rough start to the season... literally - Victory Forums - Victory Motorcycle Forum
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post #1 of 9 (permalink) Old 06-04-2019, 08:33 PM Thread Starter
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Angry Rough start to the season... literally

Evening All,

so this just hasn't been my year to get my 2011 XRoads out riding. Started off in a New England April with a 21 days of rain, a mouse nest in the air intake, a destroyed throttle body due to him storing all sorts of goodies and piss in there, a dead battery, and after screwing up the TB seals, it's finally back together. Now yes, i probably shouldn't have let it sit in the garage for 7 months, but a newborn will definately consume some time.

Anyway, here's my new discovery. Upon start-up i was getting a code that the cylinders were running lean. it would idle, pop, stall out, etc. I read around and found that if you unplug the O2 sensors, no more lean engine codes. Voila! Success No CEL! However, here's the new fun part, it'll idle for about 30 seconds to a minute on start up now before just dying out. I thought hmmmm, maybe bad gas? Took it out for a ride to run the tank down, filled up with 93, got it onto the highway and still the same. Here's the notes:

- Idles for 30 seconds, and stalls on start up
- open the throttle a little to about 1800 rpm, stays running but every so often you get a skip or a pop from the exhaust
- when riding, you get the same symptoms except:
- acceleration is pretty normal
- on decel it sounds like you're tearing up the neighborhood with a machine gun (back fires like crazy)
- if you pull in the clutch and let off the accelerator you chance the bike stalling out which it almost always does.

I've checked everything to make sure it's plugged in correctly from assembly, even tried to plug one of the O2 sensors in to see if i got an engine code which i didn't. Tried Fuel system cleaner, ran it about 15 miles, still nothing. I'm trying to avoid taking it to the shop just due to what they charge on diagnosis alone. Any insight would be great!
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post #2 of 9 (permalink) Old 06-05-2019, 03:45 AM
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Sorry you're going through this but I think you can find the culprit.

Two things come to mind because more often than not; an issue like this can be found at one or more of the last things that were done to the bike. In this case checking the battery connections and ground. Also a possible vacuum leak somewhere around the throttle body area.

I know you replaced the battery but once in a while a new battery is bad. Be sure you have over 12 volts with the bike off and over 14 volts with the bike running. This also rules out a regulator/stator issue or connection issue to the battery from them.
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post #3 of 9 (permalink) Old 06-05-2019, 04:34 AM
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@KingTriEye From your description, the symptoms seem awful suspicious for a bad IAV or vaccuum tubes. With mouse getting in a deep as it did, yours could very well be clogged or ruined.
Check it out if you haven't already.

If you need a new one, Lloydz makes this:
https://lloydz.com/product/intake-an...dle-air-valve/

Here's a vid to give you some idea of what your looking at:
https://youtu.be/idrpw4WaeM8
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post #4 of 9 (permalink) Old 06-05-2019, 07:41 AM
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Quote:
Originally Posted by PaiN View Post
@KingTriEye From your description, the symptoms seem awful suspicious for a bad IAV or vaccuum tubes. With mouse getting in a deep as it did, yours could very well be clogged or ruined.
Check it out if you haven't already.

If you need a new one, Lloydz makes this:
https://lloydz.com/product/intake-an...dle-air-valve/

Here's a vid to give you some idea of what your looking at:
https://youtu.be/idrpw4WaeM8
I'm not sure how much experience you have with these Pain but what they do is allow an adjustment for more airflow at idle and a little higher rpm. It's basically a controlled vacuum leak. I put one on a brand new 09 Jackpot after the dealership installed a 2-1 Victory stage 1 exhaust because it was backfiring a lot. It did help reduce the backfiring but didn't eliminate the issue.

I think, IIRC, the common understanding now is a good tune by a competent tuner is the answer to the issue I had. Also that 2-1 Vic exhaust was garbage.

We definitely agree a vacuum leak may be present. If the OP or anyone wants to try out one of the IAV from Lloydz; I removed mine from that Jackpot before I traded it in thinking it might be needed on my next Victory. I'll sell it cheap to anyone who wants it. Just the valve; none of the hose or clamps.
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post #5 of 9 (permalink) Old 06-05-2019, 01:36 PM
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Screw Lloydz IAV it will not fix whats going on. Check the IAV hoses for cracks or leaks. Do you have good fuel pressure.



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post #6 of 9 (permalink) Old 06-05-2019, 08:19 PM
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Excellent chance from that mouse nesting in the air filter/ box that junk got sucked into the iac as that is where the intake line originates. It also may have clogged one of the lines out to the motor. Check the rubber connectors for cracking at the motor where the two lines from the Iac attach. Lloyds Iav will do nothing for you as it's purpose is to limit the air flow thru the Iac. Your problem sounds very similiar to a condition I created when I put in an experimental valve in that middle Iac line. It limited the air flow too much. Bike wanted to die at idle.
They are a pain to work with but I think I would pull the iav and line assembly off and blow them out before I did anything expensive. It is the reassembly that is the b**ch , no room to work as you got to make sure the lines are well inserted.
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post #7 of 9 (permalink) Old 06-06-2019, 02:02 PM
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Keep in mind the IAV works off vacuum

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post #8 of 9 (permalink) Old 06-17-2019, 09:13 PM
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I wasn't even half way thru the description and I was thinking IAC valve. Sounds as though the air mixture (which is part of what the valve does @ idle) is getting fouled up. wether in the valve or some of the vacuum lines/passages blocked. If you unplug the O2 sensor, it kind of tells the ECM to go fat/rich. So if it smooths out then it would lead me to think we are getting to much air (think leak uncontrolled) and the O2 sensor disconnected adds more fuel. With the O2 plugged in spray some brake clean in a fog type pattern around the throttle body and if RPM goes up look for the leak in that area.

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post #9 of 9 (permalink) Old 06-17-2019, 09:44 PM
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Reading the op again it sounds like a vacuum leak . Sitting at an idle - vacuum, problem. Bring rpms up and hold- vacuum, problem. Riding at steady speed, Vacuum, problem. Acceleration, no vacuum, runs good. Deceleration- vacuum, problem. Sounds so familiar to when I had my vacuum leak and had that horrendous noise. When I gave it the gas the noise would go completely away. When the throttle plates are closed there is vacuum sucking air. My case was a poor connection on one of the iac air lines. Whatever it is, it has got to do with the vacuum/ air system.

Last edited by rojo154; 06-17-2019 at 09:53 PM.
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