When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I have the M&M fuel injection on my RK, i've been told to let it warm up until the idle kicks down, and don't rev it until it does, so that's what i do.
Got to tell you guys, every day I start my bike, let it set just long enough to put on my gloves, and then start moving being careful to not rev it to high.
So after reading all this advice, decided maybe to let it sit while I put on all my gear.
So I start it up, let it set and the bike comes off high idle and dies.
Then I must have flooded it, or the float is sticking again and the bike won’t start.
Dang nag it, ended up in the car.
It was kind of embarrassing to be seen in a car.
Started right up after work, so no more listening to you guys;-)
when you start a efi bike it goes into a cold start sequence with elevated rpm's that start cycling down as pre-determined head temps are reached until reaching a normal idol of 950-1050 rpm's . Then it goes into normal operating mode . I sound like I know what I'm talking about huh?
I usually just fire it up and wait until I get at least below 1200 rpm's but like to wait until 1050 . then the bike feels more like normal running conditions to me
Minor correction. I saw several people refer to the warm up period as a temp based function. It is actually a time based function. It does refer to a table for temps, but the operation is time based.
Quote the SE Super Tuner Manual, "When the engine is started the Warmup Enrichment affect “decays”, or diminishes over a set period of time until it reaches zero, or no effect. The “Decay Time” is time-based, not “table-based”."
Minor correction. I saw several people refer to the warm up period as a temp based function. It is actually a time based function. It does refer to a table for temps, but the operation is time based.
Quote the SE Super Tuner Manual, "When the engine is started the Warmup Enrichment affect “decays”, or diminishes over a set period of time until it reaches zero, or no effect. The “Decay Time” is time-based, not “table-based”."
Yes and no, depends on the definition of "warmed up". You are correct that warm up enrichment is a time based function of20-30 sec, but that’s only part of the story. During that 20-30 seconds the IAC adjusts in steps based on, you guessed it, temperature. Again depending on your definition or what purpose of "warmed up" the answer may bedifferent. In the 2010 TTS tuning guide page 53, for the purpose of collecting VTune data, the big twin is considered warmed up between 167-311F. I believe I quoted the temp incorrectly previously at about 180 because I confused 167 for 176 and rounded up, but anyway. Considering the wide range of operating condition possibilities, an arbitrary 20-30 seconds of "warm up"enrichment mode, does necessarily mean an engine will be warmed up, when the ambient temp could be anything from below freezing to over 100. I can't find the old TTS manual that I originally found this info when I asked a couple years ago, but for my 2006 non-O2 controlled Delfi EFI, it did specify 167F as the point the system completely transitioned into "normal" operating mode. Bottom line there may not be a finite answer to this question, but it is fairly common knowledge that any internal combustion engine should be “reasonably” warmed up before placing a demanding load on it. Pick a time or a temperature that suits your taste and let it warm up before flogging the throttle.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.