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Discussion Starter #1
I don't know what happened. I either-
1) put this gas additive from HEB that's causing trouble
2) the rain recently is affecting my bike
3) I drove through too high of water as it floods in spots in San Antonio
4) my battery won't hold a charge
5) all of the above

I don't know what the deal is, but suddenly at any speed high or low my bike will just cut out. I restart it, and I get on down the road only for it to happen all over again whether it be 2 feet or a 1/4 mile. It just took me 30 minutes to get halfway to work like 2 miles. Any idea what it could be?

Sounds muted dare I say water logged? I don't know what to do. This is just a shot in the dark effort. I thought I'd get off the road for a second and ask around. I tried putting in premium unleaded to see if it might help, if that gas additive was messing it up.

Two nights ago it wouldn't turn over. The Lyft lady showed up right as it was showing signs of life. I turned it over the next day, but it sounded muted, and it would cut out. I left it charge all day on a trickle charger. I come outside, and the charger light was still red, which is something I've never seen. Usually at the longest 30 minutes, and it's starting to flash green. It stalled on 3 instances on the way home that night. Once leaving work, once on the freeway, and once going up a hill getting off the freeway.

Taking back-roads back home. I was super dressed up for work. I didn't wear a helmet, in case I had to push it anywhere, so as to not get all sweaty for work. I just pulled the plug on going in as it's my day off anyway. I can imagine people thought I ran out of gas.

This is my only way to get around, and I need it for work. Lyft/Uber is like $20 a day. I can afford that at times, but now ain't one of them. Any suggestions? Flooded motor with water? Battery? Bad gas mix? If I can get this resolved today on here, I'll be super happy.
 

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Sorry about your plight.


From the tone of your message I am guessing you don't have much money to throw at this issue - nothing to be ashamed of as neither do I and would dread an issue like this!


So in the first instance, if you don't know how to do it yourself is to pop in a garage and get the battery checked. They will likely check this for nothing.



I think you may find that this IS your issue but would not like to suggest that you purchase one until you know for sure. If it is water egress it should dry out in a few days and unless you have water in your fuel. If this is the case then it's a dismantling job and draining everything out.


Low voltage can cause a lot of issues on the newer bikes and this could well be the case.


With regard to fuel additives - some of them can be bad for seals etc. within the engine but unless you are constantly using them they burn off and will not cause an issue. I use 13ml of STP once a year and never notice that it is in the tank but I do think it helps to keep everything that is not easy to dismantle clean so I would not worry too much about that but again if you do think this is an issue just drain the tank and use fresh fuel but I would check the battery first.


Good luck
 

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If you still have the original factory battery, you may want to replace it. Even after you charge it , the battery will not hold the juice overtime. Regarding the fuel, would drain the tank completely and add fresh gas. You may have too much moisture in the fuel tank now. Then I would take a look at the air filter - you mentioned that you drove through water/rain. The filter element may be wet or damp. If so, that will be another source of getting too much of the aqua in your fuel mixture and result in stuttering. Ride safe and wear the helmet.
 

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If all else fails change the plugs. My bike was stuttering, stalling and wouldn’t accelerate to save its life The plugs were fouled. Would had been the first thing I checked 30 years ago. Gave up and took to dealership. 2 plugs and $75 later I had a running bike.
 

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Discussion Starter #5
update

-it wouldn't even make a noise for days
-i did notice that when i turn off and on the kill switch. i could faintly here like something rotating with ball bearings in it. i thought it was the nearby coke machine for quite a while.
-i thought i'd jack with the bike to make sure it was truly in neutral. i always stop in neutral. i always do. however, i have learned that no matter what atm i still have to kick the clutch around, it somehow gets it going again.
-still half power.

ty 4 the advice.
-i'll try and get by a shop to check the battery. one mechanic said that could be just it. though, the headlights don't dim, when i turn it over.
-half power i was told to pull the plugs as one has mentioned. that's my order of business after this. he said if they are black, then it means i'm running on onlly one cylinder.
-another buy said that it could be there is water in the components and to hit it with an air gun. which i don't have, but air in a can yes i do.

gonna pull the plugs; gonna get to this guy on wednesday.

i'm new to town, so knowing where to go just compounds the issue. i found a travel mechanic, but if he can't fix the issue or it's complicated, then that's just a waste of time. i'm going to call shops tomorrow. i'm excited i seem to be finding consistency and maybe a possible resolution.

thanks for the tips. at the very least, it keeps me focused. i'm busy at work atm. i'm a commuter, so this is important to me. in the amount of money i'm spending on lyft, i could have this resolved and paid to be done.

idk why i didn't get a notice ya'll wrote on here. glad you did. :)
 

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Hi,

I had a similar issue. It was the side stand sensor affected by UK weather. Try cleaning it and insulate it better.

Good luck.
 

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Discussion Starter #7
Do you have any youtube videos on the side stand sensor by chance? I'll google it.

That makes sense. So I rode out to Boerne, which is about 20 minutes from here. A mechanic tightened up my clutch cable, so that helped with the starting.

He said it seems to be in a "Parade" mode, but he's not a Harley-Davidson specialist, and we were just doing a cursory look.

He thought it was a senor or I thought some kid at my apartment complex tripped it into this mode with pushing buttons in a certain order.

The weather here has been different than DFW. It's been cold and drizzly.
 

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Discussion Starter #8
I think I'm just going to bite the bullet and put a new battery in it on my own. Does anyone have any good battery installation YouTube videos? I may have found one from Benno's shed.
 

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YouTube user "Ariel GB" has videos on how to do just about anything on these bikes. It seems to be two Brits that bought a couple of these bikes and decided to do a YouTube channel with apparently no experience in....anything. Their vids tend to be painful to watch, mostly due to shaky camera work, bad viewing angles, and a lack of editing.

is the first of a four part series on removing and replacing the battery.

xg750 battery - YouTube is a link to a YouTube search on "xg750 battery".
 

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Discussion Starter #11
Still stuck. The top speed is 45mph. It blows out a lot of gas fumes out of the muffler at times. idk
 

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Have you got a check engine light on? Problems this severe should trigger something. Does this procedure work for reading and clearing codes on your bike? I think it might be for model year 2017 or newer.
 

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Discussion Starter #13
It's had the check engine light on since day one. Lol.

You sent me something to clear codes?
 

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Discussion Starter #16
I was rolling to work maybe two days ago, and it took it's usual while to start. From out of nowhere, my bike just came to life and was roaring down the road. I could hear sputtering like it was being held back somehow and the gas was just flying in there now. Flash of brilliance apparently. Performance, probably a better manner of putting it.

So then I was hitting the grocery store for a quick trip. Went and got gas. I thought I was on a hill or something, because gas just started pouring out the top just nonstop. It poured out the whole way home. I was a goner, if it hit a spark.

Is it the cap or the fuel lines blocked? Maybe the cap was getting a crappy seal or something? Maybe tampering? Idk. Someone screwed up my cap a long time ago, so I was meaning to get one anyway.
 

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Have you read the engine trouble codes, yet? There is no reason to continue this discussion until you do.

Some error codes will put the computer into "limp mode", which may be what your independent mechanic misdiagnosed as a parade mode which this bike doesn't have. An old thread on a gixxer forum addresses limp mode and describes what happens in one post:

" it really depends on the manufacturer, as all of them do it a bit different. but typically timing is changed, redline is lowered, a/f ratio is changed, sometimes speed is limited, sometimesrowi throttle is limited, and there may be more too. basically it cuts performance in almost every way so that you can make it home without doing any damage to the engine. sometimes called limp-home-mode."

Those symptoms sure sound like what you are encountering.
A

"limp-in" is simple in that the computer has a fail safe mode. It needs measurements from multiple sensors to properly add fuel to maintain the programed A/F ratio. If a sensor fails or reads inaccurately the computer will substitute a set value that will maintain the ability to keep the engine running, but will suffer performance loss. The major limp in mode will decrease ignition timing to a minimum to prevent detonation, and to lower engine temperature. Fueling will run RICH for the same reason as pulling ignition timing. The computer will lower the hard redline to prevent additional strain on the engine. In all cases the FI light will come on to alert the rider that their is a problem
s always, if you have an obvious issue, like the screwed up cap, fix it now. If it's not the root cause of your problem it may be masking a larger problem. In this case, modern fuel systems are designed to be sealed, so that could be throwing a code and thus be the root cause of your problem, or not.
 

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Discussion Starter #18
I got to finally watch your video last night. I see how I might be able to read it. I didn't see how I'll be able to change it. I'll try and look at it again tonight.
 

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Discussion Starter #19
I am home. I watched the video. It doesn't work. That's a 750, my friend. I wish it'd work on mine. I turn it over and cut the engine. I push the button down, and I turn it to "on". Nothing happens. I wish it'd work. I don't get it. It doesn't work. No codes, just mileage.
 

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I think that procedure works on all of the xg's from 2017 on, so if you have a 2015 or 2016 it won't work. I now seem to recall from other threads that you have a 2015. You still need the code, so either go to another mechanic or the dealership.
 
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