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Re:03 road star midnight star engine fail cant pin it
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TOPIC: Re:03 road star midnight star engine fail cant pin it
#1019441
mhwusmc (User)
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03 road star midnight star engine fail cant pin it 3 Months, 2 Weeks ago  
Ive had this bike for 4yrs no problems at all. Doin about an even 80mph, So. Cal freeway moderate to heavy traffic. Motor thumping nicely like always, then silence, emergency mode safest most direct route from the fast lane to the shoulder, 20ft behind me all 4 lanes full, ok no time drop emergency mode , throw safty to the wind forget throwing the wind already blew that away, ok direct is my only option left dive dive (nooo i didnt close my eyes, what do i sound like some dont give a shit careless driver?). So safe on the shoulder i,ve already cycled to reserve (I know i have 3/4 tank), gone to neutral, hit the starter and it starts right back up. 4 more miles down the road again die's, went to neutral starts right up. No problem for the 7-8 miles home. Next day 15 miles to the beach, 3/4 tank, same thing mile 5 and mile 7.5, sat at beach for 20 min, die's once more half way home, starts right back up. Each time went to neutral, petcock from on to reserve, off and on'ed my starter relay then hit the start button starts right up. My bike has always started first try. only issues in past were brakes. I use mid grade gas 89oct, i've had it since 24k its now at 50k. Thats the symptems...

Im thinking a fuel issue somewhere between tank and fuel pump, hopin its clogged strainer above petcock, clogged fuel filter, maybe intermitant fuel pump failure. don't even know if i may be close to problems I listed above because i question if a strainer or filter clog would present itself at this frequency or if same clog has room to move out of way then back to clogged. or if the fuel pump could have that many intermitant failures electricaly by loose wires or shorts.

Well no need to waste more space on my speculations. I need help fellow riders of the road stars. thanks
 
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#1019442
Father_Pobasturd (User)
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Re:03 road star midnight star engine fail cant pin it 3 Months, 2 Weeks ago  
Bypass the fuel pump and see if it cures it, then you'll know your options. If it fixes it you can either replace the fuel pump or eliminate it permanently. Many of us (myself included) with carburated bikes have gotten rid of the fuel pump. Besides curing the problem, you lose about 10 pounds of weight, and open up the left side of the motor to allow better air flow to the cylinders. Looks better too without it. There are many posts archived here on how to do it, it's inexpensive and relatively easy to do. Below you'll see a pic of the left side of my bike to show you how it looks without it. Good luck!


 
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Last Edit: 2017/08/10 03:15 By Father_Pobasturd.
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#1019443
mhwusmc (User)
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Re:03 road star midnight star engine fail cant pin it 3 Months, 2 Weeks ago  
so an obvious fuel pump problem then?
 
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#1019444
Father_Pobasturd (User)
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Re:03 road star midnight star engine fail cant pin it 3 Months, 2 Weeks ago  
It very well could be. It's a place to start. I just noticed something...you and I joined the RSC 10 days apart.You on 8-30-13 and I on 8-20-13. But you have 11 posts and I have over 4500. I guess you're a man of few words and I'm a man of way too many.

 
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Last Edit: 2017/08/10 03:27 By Father_Pobasturd.
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#1019445
mhwusmc (User)
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Re:03 road star midnight star engine fail cant pin it 3 Months, 2 Weeks ago  
that OR i been blessed with a bike from heaven ; ) no priors (repair probs)
thanks very much for your input. thats the kinda stuff that makes this crew famous
 
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#1019446
Father_Pobasturd (User)
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Re:03 road star midnight star engine fail cant pin it 3 Months, 2 Weeks ago  
Hey my pleasure thanks for your service to our country. My bike has had no problems for the past 4 years either. Other than tires and a battery, everything I have done to it has been by choice.

 
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#1019453
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Re:03 road star midnight star engine fail cant pin it 3 Months, 2 Weeks ago  
Like PB suggested, bypass the pump temporarily, and see if that works(yes, it'll run just fine like that unless your bumping the limiter in first or second or running WOT,.....that sort of thing). Under normal riding conditions, it will work just dandy. If it works fine, then you have the culprit. If it continues, open the cap on the tank and listen for a whoosh of air entering the tank. If so, a vacuum is developing in the tank. That would indicate the vent line on the tank is clogged, or the rollover valve may be sticking.
 
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Re:03 road star midnight star engine fail cant pin it 2 Months, 3 Weeks ago  
This is an update to my problem.reguarding the fuel pump.
When i open the cover and keyed on, the pump sounded like it was running , did a resistance check norm is 1.6-2.2, mine was 2.5 ohms (?) so disconected fuel pump.
Ran excellent except did the same thing at lower speeds and right after starting off, once at the higher speeds, but in all not as frequent.
1. Is this maybe becuase i need to change the jet in my carb still?
Or/and adjust my float in the carb to allow more gas in the float bowl?
2. Increase the fuel line hose size?
3. Also something i forgot to mention from the begining that after stall i had to have bike in nuteral , recycle starter relay switch (?) and going under 20mph before my starter switch would work...
4. Bumping the limiter in 1st and 2nd, does that mean holding throotle wide open until that sputtering starts? because i wasnt doing that when the stalling occured.
5. Also will check to make sure gas tank is venting by doing that mod on tank lid.
Hope i provided enoiugh info to help answer my problem. thanks for all your help.
 
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#1021279
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Re:03 road star midnight star engine fail cant pin it 2 Months, 3 Weeks ago  
Normally if the pump is working properly, when you turn the key on, the pump will click a few times until it builds pressure against the float valve, and stop. As long as there is pressure there, the pump won't run. It only works when it has to.

Yes to #4. If you weren't doing that, when running the bike without the pump, then that's not the problem.


If the bike ran fine before and now doesn't, it has nothing to do with your jetting.

You ran the bike without the pump by running a piece of 5/16 fuel line from the petcock to the carb inlet, and rode it, and it still stalled and quit?

If the bike stalled, and you tried to start it while it was rolling, without pulling in the clutch, then no, the starter wouldn't turn. The starter will only work with the bike in neutral, or with the clutch pulled in.

If you ran the bike by bypassing the pump, and it is still stalling, and venting the cap doesn't fix it, then start by checking all the battery connections. Next the plugs on the ECU(inspect them for signs of corrosion and clean if needed), and then start looking at the wires for the PU coil. If it is the PU coil then chances are, it'll stop working all together.
 
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#1021286
davej (User)
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Re:03 road star midnight star engine fail cant pin it 2 Months, 3 Weeks ago  
Have you removed the rollover valve? If not try it to see if it fixes your issue. In fact you can just remove the small rubber line under the meter cover to achieve the same thing. The rollover valve has been an issue on quite a few members bikes and will do just what yours is doing when they plug up.
 
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