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09-29-2014, 10:17 PM | #1 |
Jr. Member
Join Date: Sep 2014
Location: Lamar, CO
Posts: 4
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99' Nomad low power at high speeds
I have a 1999 Nomad 1500. I was in the mountains last month on a ride and noticed the bike did not have normal power especially when climbing hills. With full throttle, it would bottom out. The guys behind me wanted to push me up the hill! I put in new plugs, air filter and fuel filter. I went on a ride this past weekend and had the same issue only I was on the eastern plains .... only small hills but with a strong head wind. It had trouble staying at 65 mph. I am at a loss. Any ideas as to what may be causing this?
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09-29-2014, 10:25 PM | #2 |
Advanced Member
Join Date: Aug 2011
Location: Lake Travis, Texas
Posts: 518
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Sounds like you may need to replace the Old Clutch Spring with a Mean Streak Spring and possibly some new Clutch Friction Plates.
Could also be a bad vacuum line on the carburetor as this happened to me.
Last edited by rolfe; 09-29-2014 at 10:29 PM.
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09-29-2014, 10:31 PM | #3 |
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Join Date: Sep 2014
Location: Lamar, CO
Posts: 4
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rolfe, Thanks for the quick reply, but I need more info. How does the clutch spring or clutch plates cause low power?
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09-29-2014, 10:35 PM | #4 |
Top Contributor
Join Date: Feb 2008
Location: Ontario
Posts: 6,920
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If the clutch is slipping full power output will not be getting to the rear wheel.
Do you know what a slipping clutch feels like ? |
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09-29-2014, 10:47 PM | #6 |
Join Date: Oct 2010
Location: Michigan
Posts: 1,286
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All 99's were carbed. My money would be on the clutch slipping. Adding throttle gets you nothing in the higher gears is the first indication of the clutch spring needing to be replaced. No cat on the 99's the goat belly is just a prechamber.
DC
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Me and my 99 G1 Nomad on US 2 by the Lake Michigan Shoreline. Judge's Oil Gear failed and engine overhauled @ 35563 miles VBA/KawaNOW #01625 Christian Motorcyclists Assoc. Wheels Of Destiny Chapter #735 PA Wilds NE/Eastern Canada regional rally July 2012 Eureka Springs National 2015 Rolling Thunder Washington DC 2016 NE US / E Canada Rally - Mont Tremblant, QC 2016 VRA Eastern National at Maggie Valley 2017 99 Nomad G1 gone but never forgotten traded 4/8/17 for a 2017 Indian Roadmaster |
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09-29-2014, 10:48 PM | #7 | |
Advanced Member
Join Date: Aug 2011
Location: Lake Travis, Texas
Posts: 518
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Quote:
Since you say your loosing power then my guess would be a vacuum line on or near the carburetor. "In my case I could throttle while sitting but then when riding a loss of power" |
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09-29-2014, 11:00 PM | #8 |
Join Date: Oct 2010
Location: Michigan
Posts: 1,286
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Was the bike revving up just not pulling?
DC
__________________
Me and my 99 G1 Nomad on US 2 by the Lake Michigan Shoreline. Judge's Oil Gear failed and engine overhauled @ 35563 miles VBA/KawaNOW #01625 Christian Motorcyclists Assoc. Wheels Of Destiny Chapter #735 PA Wilds NE/Eastern Canada regional rally July 2012 Eureka Springs National 2015 Rolling Thunder Washington DC 2016 NE US / E Canada Rally - Mont Tremblant, QC 2016 VRA Eastern National at Maggie Valley 2017 99 Nomad G1 gone but never forgotten traded 4/8/17 for a 2017 Indian Roadmaster |
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09-29-2014, 11:07 PM | #9 |
Join Date: Oct 2010
Location: Michigan
Posts: 1,286
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Check the boot from the intake manifold to the Carburetor these have a tendency to come off and create a massive vacuum leak. Bike would be running so lean it will barely run at idle.
DC
__________________
Me and my 99 G1 Nomad on US 2 by the Lake Michigan Shoreline. Judge's Oil Gear failed and engine overhauled @ 35563 miles VBA/KawaNOW #01625 Christian Motorcyclists Assoc. Wheels Of Destiny Chapter #735 PA Wilds NE/Eastern Canada regional rally July 2012 Eureka Springs National 2015 Rolling Thunder Washington DC 2016 NE US / E Canada Rally - Mont Tremblant, QC 2016 VRA Eastern National at Maggie Valley 2017 99 Nomad G1 gone but never forgotten traded 4/8/17 for a 2017 Indian Roadmaster |
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09-30-2014, 09:49 AM | #10 |
Join Date: Aug 2007
Location: Newmarket Ontario Canada
Posts: 35,387
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Depending on how high an altitude you were at, it will effect the jetting of the carb, this is normal. Did it seem to have more power when you got back to lower ground?
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2002 Nomad aka Bountyhunter VBA #27 VROC #18951 |
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09-30-2014, 10:48 AM | #11 |
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Join Date: Sep 2014
Location: Lamar, CO
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Wow, lots of options to consider. Thank you for all the responses. Here are some of the answers to the questions:
1) Paul - it has V&H baggers. No goat belly. 2) minst7877 - Not really revving up, just not pulling. Had to gear down quite a bit. Also, it idles fine and has good power at lower speeds. No problem with throttle or power around town. Just out on the highway. 3) ringadigh - I did not have the problem a year ago in the mountains or on the plains, but maybe it does need to be rejetted. I live in Easter Colorado. It was frustrating over the weekend in strong winds when it would not pull on minor inclines. I will check for possible vacuum leaks. I will also look for for a clutch spring. Any links where I could get one? Thanks for all the help! It will rise to become the mean, green machine it once was! |
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09-30-2014, 10:59 AM | #12 | |
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Join Date: Feb 2011
Location: Glendale, Arizona
Posts: 987
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Quote:
Is it pinging when you're hard on the gas trying to make the grade, or just boggy?
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VBA member #01682 Green 1999 Nomad 1500 carb'd 43,000 miles JOG'd at 20,000, JOG failed at 40,000 SOG'd at 40,000 Darksider
Last edited by danimal2; 09-30-2014 at 11:02 AM.
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09-30-2014, 11:19 AM | #13 |
Jr. Member
Join Date: Sep 2014
Posts: 5
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To check your intake gasket, spray carburetor cleaner between the jugs on the side behind the carburetor with the engine running.
If the engine bogs down, you have a leak. (If it runs fine at lower speed I don't think this is your issue.) Do these bikes have a screen in the petcock or a fuel filter? That could be your problem. |
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09-30-2014, 01:03 PM | #14 |
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Join Date: Jul 2011
Location: PEI, CANADA
Posts: 351
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I would say clutch spring.
Mine did the same thing until I replaced the clutch spring. |
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09-30-2014, 04:57 PM | #15 |
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Join Date: Sep 2013
Location: On The Shakey Side
Posts: 2,501
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San's clutch slippage...fueling issues... I have a 02 Nomad 1500fi...a couple years ago I was riding in the Walden Colorado area..up toward Encampment, Wyoming..on pretty level terrain,...I had a 25 -30 mph head wind and my Big Assed Bike would barley run 65 mph (due to altitude/temps)..it makes a huge difference in engine power output when you get above around 5500 ft + , as I recall the altitude up there was 6000-8000 above sea level.
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