R1200RS + R1250RS Forum
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Mon May 14, 2018 4:36 pm
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This is one of my favorite subjects on the old RS forum. In certain areas of the U.S., the R/RS models will not start upon the first attempt during the morning. They just grind away while chugging and popping when the starter button is first pushed. However if you stop trying and then hit the button again the bike will start up instantly. Oddly, this only happens during summer months, when our 10% ethanol-injected summer smog gas is introduced to the customer. During the winter, when the gasoline blend is changed again, presumably to increase volatile components, the bikes will start instantly upon the first push of the button after sitting all night. The problem seems to have nothing to do with weather or any other thing that the rider might have control over. It is a problem that seem to have no solution but is worth griping about at least once a year. I mention this now because I recently filled up with Chevron premium fuel and the double-start syndrome returned after an entire winter of instant starting. |
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I had that occur occasionally and also found that piddling along at low speed in a high gear was very snatchy, almost stalling on occasion. I figured both were due to the leanness at idle/low speed. I installed a booster plug, which had cured the same issue in my R9T and my wife's BMW f650GS. It did the same for the RS and I'm very pleased for the 3rd time with the booster plug to eliminate the low speed leanness. |
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Zitat von Richard230 im Beitrag #1 Our bikes did the double tap a few times while in Texas a couple weeks ago. Never saw a pump marked with a ethanol sticker down there. It's been a long time since I have seen a ethanol free pump in the Texas Hill Country. I think it's interesting that Iowa is corn country and we have plenty of ethanol free gas available.
Lee
2016 R1200RS Iowa, USA |
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Mine has been doing this for the last 3 weeks. I also am convinced that it is the so-called "summer gas".
Regards,
Grumpy Goat |
Zitat von Lee im Beitrag #3Zitat von Richard230 im Beitrag #1 The ethanol mandate is for the entire US gasoline pool, x number of gallons of ethanol must be blende per year. That x number of gallons is less than 10% of the total gasoline market so small markets get the no ethanol gift. I assume Iowa is a small market, relatively speaking.
'16 R1200 RS
'17 Triumph Bonneville T120 '17 KTM Super Duke 1290 R |
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I don't think the issue has anything to do with ethanol as we have had the stuff in our gasoline for at least 10 years and also have it in the winter-blend fuel and I never had to deal with a need to double-start with my previous 2007 R1200R or my current 2009 F650GS. Besides, none of my other motorcycles suffer with this problem at any time during the year. So it must be caused by the design of the new WC engines and their cold start-up programming, combining somehow with the summer-blend fuel compound. My guess is that the WC engines are designed to run so lean at all times, including when starting from cold, that they have reached a tipping point where there just isn't enough fuel enrichment to start quickly when cold on the summer fuel. No wonder BMW can't fix the problem. Doing so would likely impact their trend toward clean running and I don't think they would want to do that, especially in the current EU regulatory climate.
Current motorcycle collection: 2002 Yamaha FZ1; 2005 Triumph Bonneville T-100; 2011 Royal Enfield Bullet 500; 2009 BMW F650GS; 2016 BMW R1200RS; 2011 Zero S 16.6 kWh
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Hi. |
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I have no idea what you guys are talking about. Maybe because we don't have these kinds of fuels here in Europe. I've always used 98 RON on mine, during summer and winter. Maybe its a little more hesitant during winter, and especially on cold days like 0 degrees, but that's all. |
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All Lead acid batteries (Gel, AGM, Flooded, Drycell, etc) are made up of a series of 2.2 volt cells that are bridged together in series to reach their final desired voltage. For instance, a 6 volt battery will have 3 cells (3 x2.2= 6.6 volts), a 12 volt battery will have 6 cells (6 x2.2=13.2 volts) and so on.That 2.2 volts is the fully charged, straight off the charger number. The actual resting voltage, or the voltage a battery will settle at 12-24 hours after being removed from the charger, is closer to 2.1 volts per cell, or about 6.4 volts for a 6v battery, and 12.7 volts for a 12v battery. These numbers assume 100% healthy cells, and may vary a bit lower for older batteries.
2002 ZZR
2006 GSXR750 2008 Fireblade 2012 NS700X 2017 R1200RS 2018 R1200RS |
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Zitat von pasko im Beitrag #8 Hi. Well, I've been investigating this issue and it turns out that we are served *BLENDED* fuel here in Spain (and probably all around the EU). At least the fuel sold as RON95 which is the one I usually buy. I will try another type of fuel labelled as RON98 (more expensive, BTW) to see if I can get rid of the fucking double start.. Information is scarce and contradictory anyway. Regards. |
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Zitat von pasko im Beitrag #11Zitat von pasko im Beitrag #8 In Europe, 95 RON unleaded fuel is allowed to have anything from 0 to 5% ethanol. They do not have to label it as ecofuel. What you get at a pump will change from day to day as the tanker this week might be 5% and next week 0% depending on the source of fuel. The forecourt bunker will be a mix of 0% & 5% fuel in an unknown ratio. Once the ethanol content reaches 10% the fuel has to be labelled E10. In some parts of France dominated by Total, it is difficult to get anything but E10 in the 95 grade. If you have Total branded fuel in Spain then you will almost certainly have ethanol in the fuel as it might be sourced in France. The ethanol content has nothing to do with other additives that might change with season or brand, depending on where you live e.g. diesel has additives to stop it waxing in cold winters, petrol night have additives to improve starting in cold weather. Shell claims to have superior additives to supermarket fuel etc etc 98 RON fuel in Europe, usually called super unleaded in the UK, does not have ethanol. This information is from a mate who is a regional marketing manager for Shell. Note, he is in sales not the technical department but he has researched this with his technical department as he runs some old vehicles that will not tolerate ethanol fuel. He uses Shell's Vpower in his older vehicles which were originally designed to use high octane 4* leaded fuel. |
Zitat von wessie im Beitrag #12Zitat von pasko im Beitrag #11Zitat von pasko im Beitrag #8 Hi. Now, this is an ANSWER.  I'll report back when I switch to RON98. I usually refill at a Galp petrol station. Thanks a lot! Regards. |
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Lucky us.
Current motorcycle collection: 2002 Yamaha FZ1; 2005 Triumph Bonneville T-100; 2011 Royal Enfield Bullet 500; 2009 BMW F650GS; 2016 BMW R1200RS; 2011 Zero S 16.6 kWh
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