"sputtering" on acceleration
Thread Starter
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5th Gear
Joined: Jan 2010
Posts: 9
Likes: 0
From: Harrisburg Pa
"sputtering" on acceleration
Let me start off by saying its a 1998 Electra Glide Classic and I love the bike. Since I bought it at times (most) it has kind of a sputter if you will around 2,000 to 2,500 rpms and if you crack the throtle fast. Im not sure if that makes sense, but it did in my head. I was wondering if anyone else experienced this and if there was a way to fix it. The previous owner said the bike has alittle hotter cam then factory, some other new parts like bushings and stuff, and then remaped. It had 2" straight pipes when i bought it and it sounded horrible so i put 2 1/2" turn downs with baffles on. The problem did not change for the better or worse. I also put new plugs and wires, and still no change. This is not all the time, but most. It appears to run rich on the right side. (factory head pipes w/crossover). If anyone could help I would really apreachate it, the warm weather is moving in and instead of only a couple miles a week Im looking forward to riding.
Tourer
Joined: May 2008
Posts: 305
Likes: 3
From: Coffeyville, KS
Welcome to the forum. Is it carbed or injected? It's more than likely the map if injected or the jetting if it's carbed. I'm sure someone that knows alot more will respond with more help. I put a fueler on my 06 and it started sputtering on take off a bit and I'm betting it's from too much fuel but like I said it's just a guess on my part.
Road Warrior
Joined: Oct 2008
Posts: 1,536
Likes: 0
From: Virginia
I agree with 427 above. Does it have a Power Commander or any other type of fuel management? I did cams and a PCIII on my 00EGC and it sputtered around 2800rpm with a canned map. After it was tuned the right way it ran great. Any more info you can send out would be helpful. Have you ever changed out the fuel filter? And welcome from VA.
Thread Starter
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5th Gear
Joined: Jan 2010
Posts: 9
Likes: 0
From: Harrisburg Pa
No actually i did not change the fuel filter. As stupid as it sounds I never thought of it, and frankly im not sure i know where it is. I guess I need to head out to the garage and look for it
Road Captain
Joined: Aug 2008
Posts: 559
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From: Berwick, Pa.
If you don't have a service manual, get one.
Check torque of all exhaust bolts. Make sure everything is tight. Do you have a stock air cleaner and is it clean. Check it for mounting tightness.
Check the ECM. If it is stock and you have a high flow air filter it may have never been calibrated for the change in air/fuel mixture.
Check torque of all exhaust bolts. Make sure everything is tight. Do you have a stock air cleaner and is it clean. Check it for mounting tightness.
Check the ECM. If it is stock and you have a high flow air filter it may have never been calibrated for the change in air/fuel mixture.
Last edited by paguy; Jan 26, 2010 at 03:31 PM.
Thread Starter
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5th Gear
Joined: Jan 2010
Posts: 9
Likes: 0
From: Harrisburg Pa
Update
I checked all bolts for the fuel intake, and exhaust. Everything is tight and i do not see any signs of leaking fuel. However, the bike is pushing gas from the breather tube above the air filter. It is a K&N Filter to anwser a previous question. The previous owner stated that it was remapped for the cam and such. This is my 7th 80in evo, but first fuel injected. I loved these engines that is why i bought the last year for them. I wish I would have known alittle more about fuel injection tho. So, I guess what my next question is, how do i tell if i have a bad injector that is leaking fuel and flooding out the bike?
THanks in advance for the help!
THanks in advance for the help!
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Stage IV
Joined: May 2007
Posts: 4
Likes: 0
I had similar problem on my 05 RG......I replaced the intake manifold gaskets just last week and seemed to have solved the problem. Bike runs like new again! Simple in theory, but Its a bitch of a job. There is not much room to remove the bolts that hold manifold in place. Your problem may also be a throttle position sensor which you can replace in ten min for about $35. Intake gaskets cost $12 if i remember correctly, but again, are a pain in the *** to replace. You can check your intake for leaks by spraying some parts cleaner around them. If you notice a change in rpms or motor sound you are sucking in the spray and have a leak! If your gaskets are good, think about TPS replcement! Good luck. Let me know how you do!
Bob
Bob
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Road Captain
Joined: Aug 2008
Posts: 559
Likes: 0
From: Berwick, Pa.
I hope my suggestion on a service manual was not taken as rude. A carb. is a fairly simple component to work with. If you make changes to the exhaust just find the mixture screw and adjust. Fuel injection usually requires recalibration when a component is changed.
The stock ECM Harley uses seem to have a limited band and compaired to off market control are vey slow in response.
Recalibration either requires flashing the existng ECM or purchasing and calibrating a better module.
Fuelmoto, a site sponser, will answer any questions you may have on the fuel system.
The stock ECM Harley uses seem to have a limited band and compaired to off market control are vey slow in response.
Recalibration either requires flashing the existng ECM or purchasing and calibrating a better module.
Fuelmoto, a site sponser, will answer any questions you may have on the fuel system.
Last edited by paguy; Jan 27, 2010 at 10:52 AM.