GL1200 harder to start when hot


Information and questions on GL1200 Goldwings (1984-1987)
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chrisraven
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Location: Abbotsford, BC, Canada
Motorcycle: 1977 GL1000, 1986 GL1200, 2009 GL1800, 1986 Honda V750

GL1200 harder to start when hot

Postby chrisraven » Tue Jun 11, 2013 6:46 pm



I have a GL1200 1986, starts fine when it is cold, (mostly anyhow), but after I've been riding for awhile and the bike is up to temperature it acts like the starter doesn't want to turn the engine over. Then it kicks in and the engine starts right up. I am thinking that the starter windings may be weak and the starter may need to be replaced.

Any comments? New battery, charging circuit is good, new stator installed.

Thanks
Chris



jeremccurdy
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Re: GL1200 harder to start when hot

Postby jeremccurdy » Wed Jun 12, 2013 8:13 am

If your starter is turning fine when cold, I don't believe the starter is your issue. The problem lies in the nature of this particular engine/carb setup:

1. When the engine is hot and you shut it down, the carbs sometimes do not allow enough fuel through for a warm engine start. I hold the throttle open a little for a hot start and the engine fires right off.
2. You may have noticed the small space where the starter lives on this motor. It is very close to both the cylinder head and exhaust pipes, a very hot location. If you know anything about electronics, you know they function better when cool than when extremely hot. Hence the normal operation on a cold start and a slow start when the motor is hot.

I experience the same slow start when the engine is warm that you describe. However, this issue has never ever left me stranded. It just seems to be the nature of how this particular engine carburetor setup work. I am NOT a mechanic and there might be other issues at play here. If the problem persists and causes you enough concern, please talk to or have a mechanic look at it.

Good luck!
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virgilmobile
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Re: GL1200 harder to start when hot

Postby virgilmobile » Wed Jun 12, 2013 8:52 am

I too experience a "slower cranking speed" when the 1200 and the 1100 were up to temp...
It did not start any worse,just cranked like the battery was running low.

I removed the starter and did a general clean and grease job on the planetary gears,bushing and cleaned up around the brushes.Double check both roller bearings(gl1200) if you get into it too.
Pay close attention to the casting condition...Corrosion at the baseplate(brush holder) can hinder current flow.The grounding brush relies on a mechanical connection there.

Mine was difficult to remove from the bike(gl1200) but even with that,the whole job took but a few hours.

Search"how to remove your starter" and "how to rebuild your starter.
Avoid replacing it with a "new" replacement...They seem to be sketchy on quality and fit.
Always use OEM original if possible and not the OEM replacement ones.

Just my personal opinion obviously....all disclaimers apply..

Now,all this is assuming that your battery does load test OK,the charging system is up to snuff and the bike actually does run properly........

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chrisraven
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Location: Abbotsford, BC, Canada
Motorcycle: 1977 GL1000, 1986 GL1200, 2009 GL1800, 1986 Honda V750

Re: GL1200 harder to start when hot

Postby chrisraven » Wed Jun 12, 2013 2:26 pm

Thanks for the reply, I was under the same thought pattern, so out the starter comes and I will clean and polish it up. I will have the coils tested and replace the brushes just because I have it out. Hopefully that will cure the problems.

Thanks for you input I appreciate all the responders on this site.

Chris

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virgilmobile
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Re: GL1200 harder to start when hot

Postby virgilmobile » Thu Jun 13, 2013 11:35 am

Please keep us informed on what you find wrong and how you fixed your problem.Post pictures too.What you find may help someone else. :ugeek:
Remember,there's millions and millions of people watching this.
Well maybe not millions,but I'll keep looking. :)

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Coolride
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Re: GL1200 harder to start when hot

Postby Coolride » Thu Jun 13, 2013 6:51 pm

Starter gets heat soaked from engine, and exhaust temps. I did the whole clean and lube the starter assm. had my engine out, but it does the same when it's warm. Next I'm going to wrap the exhaust manifold near the starter with exhaust wrapping, and see if that helps.

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virgilmobile
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Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: GL1200 harder to start when hot

Postby virgilmobile » Fri Jun 14, 2013 8:47 am

Coolride wrote:Starter gets heat soaked from engine, and exhaust temps. I did the whole clean and lube the starter assm. had my engine out, but it does the same when it's warm. Next I'm going to wrap the exhaust manifold near the starter with exhaust wrapping, and see if that helps.


You could also adapt just a heat shield between the starter and the header.....Allow air flow....
Tolerances in the starter might be a bit tight or in need of a new set of roller bearings/bushing.
The 1100 uses bushings in all 3 points,the 1200 uses 2 roller bearings and 1 bushing.




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