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Posted by Brent Duncan
- September 27, 2013, 09:42:22 AMthat chugging/knocking i only get in 1st gear with really slow speeds like leaving stalls in parking lots or entering apartment parking lots etc where the bike is super slow almost walking speeds.
maybe driving style might be an issue but i do do allot of stop and go city.
I'm going to just do a good look over and cleaning of everything, running some sea foam through the system and doing full fluid changes etc. we will see how things go.
Posted by jmbo
- September 26, 2013, 21:55:41 PM23 - 24 MPG Holy Crap! That's really low. I'd have to have gas running out of the tail pipe to burn that much. I'm running mine fully dressed with wind screen, bags, and my lard ass and I'm getting a solid 40 MPG night, day, city, country, cheap gas, mid-grade, or premium, putting along or running like a bat. Best I can do and the worse I can do. I agree, if your bike has a cat, check it. My PO did a Dutch bypass on my bike with the stock pipes. I have since put o a set of Roadhouse two in ones. No difference in how she runs. Does make a purrrdy sweet sound though.
Posted by John Hopkins
- September 26, 2013, 19:28:52 PMI did an Iron Butt run in July and had a chance to see how my bike did at reasonably fast speeds..First my bike is a 99 model which has a smaller tank than yours..and second I gauged my mileage up to the point the reserve light came on, which leaves 4 litres in the tank..At 60 to 70 mph I could get 100 miles or 160 kilometres to the tank full..but at the top speed of 107 mph with no headwind or 90 mph with a strong gusty wind I could only get 70 miles or 112 kilometres to the tank full..
The knocky sound you are getting at slow speeds may be what we call lugging which is caused by being in too high a gear at slow speeds..this is not good for the engine and will not help with fuel consumption..also being caught in traffic jams will use a lot of fuel..
It is possible that it is your riding style is more to blame than anything else.
John.
Posted by CDNRatMan
- September 26, 2013, 14:00:57 PMSilverback, I know mine is a 800 and you are running a 1500, but I did find a huge difference when using Pertrocan fuel, I got much better distance from a tank, I have for most of this summer been running middle grade fuel when filling up and have gotten good results.
Posted by Troll
- September 26, 2013, 12:44:08 PMAlcohol crap is everywhere. The local gas cartel has "premium" fuel marked no alcohol...recreational gas...boats, snowmobiles, motorcycles, etc. 91 octane...is that really worth $.20 more a gallon? I've been running mine for the last 4 years/41,000 miles on 89 octane w/alcohol. Seems to run just fine, and 91 octane really isn't premium, just priced like it is....
Posted by greenbarn
- September 26, 2013, 12:14:34 PMI don't know about your gas, but it's hard to find alcohol-"Free" around here.
Posted by Brent Duncan
- September 26, 2013, 12:08:04 PMOK talked to a guy i worked with and I'm curious about this being true or not . he told me to stop using petrocanada premium as it has ethanol in it and that could be part of the problem. not if that's the case how do i find non ethanol gas not since ethanol blends seem to be the new trend??
Posted by Brent Duncan
- September 26, 2013, 11:49:12 AMno idle is cool beans, im going to check to see if the odometer is reading correctly and do a quick hiway run.
Posted by nhtrikes
- September 26, 2013, 10:56:56 AMThat throttle adjustment that hangs down between cylinders is standard on the 1500's. Does you bike idle high even after it's warmed up? That is just idle adjustment so won't affect gas mileage while driving. Chugging/knocking could just be too low rpm. Will happen in any gear if you let the rpm's drop too low. Make sure when you fill the tank you fill it to the same level (base of filler cage) each time. You said you were down to just 1/4 tank with only 102km (63mi) on the odometer, not good! Odometer reading correctly?
Posted by Brent Duncan
- September 26, 2013, 10:22:07 AMidles good, accelerates fine, rolles well, exhaust isnt gassy or plugs arent fouled.
the one thing i do notice is under slow acceleration in first it seems pretty knocky, maybe its just me and the engine under load at low rpm chucging allong.
other than that nothing seems off, no lag or sputtering or bogging under acceleration. no smoke of any kind at any time. im going to take the covers off the throttle body cause i do have a ide adjustment knob under the chrome cover, i dont think this is stock i haven heard anyone with this. its a black plastic knob with a hex nut in the center that i can turn to adjust the ide speed on the right side of the bike. or maybe this is stock lol. but cant find it in any break downs online. so maybe more is fiddles with in the throttle body from the previous owner.
Posted by DC
- September 26, 2013, 07:16:00 AMThere's something very disturbing-looking about those goat bladders. 
Posted by nhtrikes
- September 26, 2013, 07:10:35 AMWeird thing is if it was running that rich wouldn't it show up on the plugs and how it runs? Does it seem to be running ok? Good acceleration? Does the bike roll easily on flat surface without feeling any resistance? Have you always had this terrible gas mileage or did this occur after the tuneup? Could be those gremlins, siphoning gas overnight when you're sleeping! Do you have a bell???
Posted by greenbarn
- September 25, 2013, 20:10:18 PMQuote from: nhtrikes on September 25, 2013, 15:00:04 PM"Air intake sensor, intake air temp sensor...same same..the Drifter has AIT, MAP and BARO, but no O2 sensor. Coolant temp and TPS are also there, but the map is the map. I found, with mine, that the BARO sensor has a HUGE effect on which cell of the fuel map the computer uses. At sea level, running 70 mph and about 70 deg. with stock everything, I was getting 39-41, at 5,000 feet, running (same trip) 75 mph, I was getting a steady 45. Running in the Georgia mountains at Drift-In I was getting over 50, with my home brew air box." - From another string -
Troll, could it be one or several of these sensors that are causing such poor mileage???
Could be any of those - it's just like a car, the ECM takes all those inputs, and makes a decision on how much fuel to add. If it think's it's -20F outside, it dumps a whole lot more fuel than 60F.
Posted by Brent Duncan
- September 25, 2013, 15:09:48 PMthere is 27000km on the bike. im going to check to see if all the plugs are sparking properly in the next day or so as well.
Posted by nhtrikes
- September 25, 2013, 15:00:04 PM"Air intake sensor, intake air temp sensor...same same..the Drifter has AIT, MAP and BARO, but no O2 sensor. Coolant temp and TPS are also there, but the map is the map. I found, with mine, that the BARO sensor has a HUGE effect on which cell of the fuel map the computer uses. At sea level, running 70 mph and about 70 deg. with stock everything, I was getting 39-41, at 5,000 feet, running (same trip) 75 mph, I was getting a steady 45. Running in the Georgia mountains at Drift-In I was getting over 50, with my home brew air box." - From another string -
Troll, could it be one or several of these sensors that are causing such poor mileage???