I just bought a 1979 GS750E. Wonderful bike, I must say, especially coming from a 1980 Honda CM400T. Riding it back from work today, I noticed that if I turn off the lights, the rpms come up a good 200 revs. I know that the lights take a good bit of power and will load the alternator/generator more, but this seems excessive to me. My first suspects are the grounds for the harness, and I've seen reference to there being a few that should really be moved to a better location. Any advice on what to check or change just to make sure the electrical system stays reliable and I'm not putting excessive load on it?
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1979 GS750e high electrical load issues
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1979 GS750e high electrical load issues
Hey all, my first post here, lots of good info! One of the few things I couldn't find through searching was an explanation for this issue, though.
I just bought a 1979 GS750E. Wonderful bike, I must say, especially coming from a 1980 Honda CM400T. Riding it back from work today, I noticed that if I turn off the lights, the rpms come up a good 200 revs. I know that the lights take a good bit of power and will load the alternator/generator more, but this seems excessive to me. My first suspects are the grounds for the harness, and I've seen reference to there being a few that should really be moved to a better location. Any advice on what to check or change just to make sure the electrical system stays reliable and I'm not putting excessive load on it?Tags: None
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Originally posted by gearheadE30 View PostHey all, my first post here, lots of good info! One of the few things I couldn't find through searching was an explanation for this issue, though.
I just bought a 1979 GS750E. Wonderful bike, I must say, especially coming from a 1980 Honda CM400T. Riding it back from work today, I noticed that if I turn off the lights, the rpms come up a good 200 revs. I know that the lights take a good bit of power and will load the alternator/generator more, but this seems excessive to me.1981 gs650L
"We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin
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Well come aboard, load will affect RPM but not sure you have a problems unless you go through the electrical with a few tests.
see GS CHARGING_SYSTEM_HEALTH
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gearheadE30
Okay, cool. The bike has an H4 light on it too, so that likely will increase load as well. The bike idles at 1100 revs, although I need to find a place to buy new carb boots (the ones between the carbs and the engine) because I've got a bit of a hanging idle. I'll dig into it this weekend when classes finish up for the week.
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Forum LongTimerGSResource Superstar
Past Site Supporter
Super Site Supporter- Mar 2006
- 35585
- Torrance, CA
Most likely due to drawing false air though the intake. The bigger issue is lean running which can damage the engine.Ed
To measure is to know.
Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182
Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846
Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf
KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection
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gearheadE30
Yeah, cylinders 2 and 3 are running a fair amount leaner than the outer two; I just have to find a source for the boots and the time to install them, hah. And the time to check the valves while I'm in there, I suppose.
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