GL1200 Backfire when shut off won't restart


Information and questions on GL1200 Goldwings (1984-1987)
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BioRobotic
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Motorcycle: 1986 GL1200A Aspencade

GL1200 Backfire when shut off won't restart

Postby BioRobotic » Fri Feb 19, 2016 9:15 am



Does anyone know what might have happened here? I have a 1986 GL1200 Aspencade. I shipped it over here to Europe last October. I got it running last night all was good...I started it today and it started smoking from between cylinders and what looks like to be belt cover behind radiator. You guessed right, I don't know what all the parts are and first time I owned a Goldwing...anyway...I used the kill switch to shut off the bike and there was a backfire...a small amount of clacking noise. Was not sure what happened...but during this my digital instrument panel was not working...but when I go to try and start it, it sounds like starter tries to kick in, but nothing except a whine and some "rattling" noise. Double checked oil, and all is good. Any ideas of what might have happened and what I should check first?



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twocams
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Re: GL1200 Backfire when shut off won't restart

Postby twocams » Fri Feb 19, 2016 11:52 am

My first thought is to check the timing belts (2) behind that cover in back of the radiator. If one of the belts broke or slipped it can destroy the engine. drain the antifreeze, pull the radiator, remove the belt covers and check the belts. Dont try to start anymore until you confirm a few things.

Twocams

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Re: GL1200 Backfire when shut off won't restart

Postby julimike54 » Fri Feb 19, 2016 5:25 pm

twocams wrote:My first thought is to check the timing belts (2) behind that cover in back of the radiator. If one of the belts broke or slipped it can destroy the engine. drain the antifreeze, pull the radiator, remove the belt covers and check the belts. Dont try to start anymore until you confirm a few things.

Twocams

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Re: GL1200 Backfire when shut off won't restart

Postby Maz » Sat Feb 20, 2016 5:16 am

+1 on checking the belts but the "whine and rattling" when pressing the starter button sounds like starter clutch is not engaging.
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BioRobotic
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Re: GL1200 Backfire when shut off won't restart

Postby BioRobotic » Sun Feb 21, 2016 6:39 am

twocams wrote:My first thought is to check the timing belts (2) behind that cover in back of the radiator. If one of the belts broke or slipped it can destroy the engine. drain the antifreeze, pull the radiator, remove the belt covers and check the belts. Dont try to start anymore until you confirm a few things.

Twocams

Thank you...will most certainly check. This motorbike I bought two years ago...all original with 3500 miles on it...that is it...even original tires which made it 2/3 the way across US from Pittsburg to Texas/NM border...
it's been a great bike...now I have it here in Romania...wanted to tour Europe.

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twocams
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Re: GL1200 Backfire when shut off won't restart

Postby twocams » Sun Feb 21, 2016 12:22 pm

You should be able to tour Romania. With that low milage the belts have never been changed I would expect? But because the bike is that old I would change the belts while you are looking at them. They get old and brittle. Are you a US citizen? And just there to tour? That would be a kool way to see Europe. Good luck, let us know how it goes.

Twocams

BioRobotic
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Re: GL1200 Backfire when shut off won't restart

Postby BioRobotic » Sun Feb 21, 2016 3:19 pm

twocams wrote:You should be able to tour Romania. With that low milage the belts have never been changed I would expect? But because the bike is that old I would change the belts while you are looking at them. They get old and brittle. Are you a US citizen? And just there to tour? That would be a kool way to see Europe. Good luck, let us know how it goes.

Twocams

Yes, I am an American...moved here in 2012 to be with my Romanian wife...then she died in 2013...been here ever since. Thinking about the tour...all depends on situation with family. I don't think this engine has even been cracked open. I will look at the belts...I would actually be surprised if they are dry..the tires were like new, not one crack in them...the late owner bought, rode it for a little bit...put it up on center stand in a garage...for 30 years almost...seriously it was like brand new when I bought it.

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twocams
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Re: GL1200 Backfire when shut off won't restart

Postby twocams » Sun Feb 21, 2016 3:59 pm

Just a little advice. Change the belts. You can get aftermarket for a $20 USD. Would you leave a 30 yr old timing belt on your $30,000 car if you knew it would destroy the engine? And if you haven't, change those 30 yr old tires also. Your life may depend on it. Just cause rubber looks OK dont mean it aint rotten. Other than that ride her till she stops. :)

Twocams

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Re: GL1200 Backfire when shut off won't restart

Postby BioRobotic » Mon Feb 22, 2016 11:31 am

twocams wrote:Just a little advice. Change the belts. You can get aftermarket for a $20 USD. Would you leave a 30 yr old timing belt on your $30,000 car if you knew it would destroy the engine? And if you haven't, change those 30 yr old tires also. Your life may depend on it. Just cause rubber looks OK dont mean it aint rotten. Other than that ride her till she stops. :)

Twocams

You are right of course...I did ride the rubber off those tires though...kept an eye on them every gas fill up...and no signs of problems...at first sight of anything was back tire of course...changed both to Dunlops....as for belts...can't see them, and certainly don't want to replace an engine, so will get those if I can find them over here. That is biggest problem I have is getting parts here in Romania for this beast.

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twocams
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Re: GL1200 Backfire when shut off won't restart

Postby twocams » Mon Feb 22, 2016 11:51 am

You can use regular car serpentine belts. They are the ones with the knobs around the inside of belt. Lots of belt # here on the forum. Ebay has some, Amazon list them. Use Napa or a good name " Gates".

Twocams

BioRobotic
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Re: GL1200 Backfire when shut off won't restart

Postby BioRobotic » Mon Feb 22, 2016 2:07 pm

twocams wrote:You can use regular car serpentine belts. They are the ones with the knobs around the inside of belt. Lots of belt # here on the forum. Ebay has some, Amazon list them. Use Napa or a good name " Gates".

Twocams

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BioRobotic
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Re: GL1200 Backfire when shut off won't restart

Postby BioRobotic » Tue Feb 23, 2016 3:19 pm

Good news...those belts are flawless.. truly amazing.

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twocams
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Re: GL1200 Backfire when shut off won't restart

Postby twocams » Tue Feb 23, 2016 3:45 pm

Good news, so that's not your problem. That would have been the costly part. Put new belts on before you button her up. Now you can look else where, maybe the starter as someone mentioned before. This is just me, what I would do. Put the lower radiator hose on, fill with coolant in the hose. That goes to the water pump this will keep the pump lubed. Put a pan under. Then you can look at other areas and crank it over. Not to run/just crank engine over. Or just put it all back together and hope for the best. :shock:

Twocams

BioRobotic
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Re: GL1200 Backfire when shut off won't restart

Postby BioRobotic » Tue Feb 23, 2016 6:20 pm

twocams wrote:Good news, so that's not your problem. That would have been the costly part. Put new belts on before you button her up. Now you can look else where, maybe the starter as someone mentioned before. This is just me, what I would do. Put the lower radiator hose on, fill with coolant in the hose. That goes to the water pump this will keep the pump lubed. Put a pan under. Then you can look at other areas and crank it over. Not to run/just crank engine over. Or just put it all back together and hope for the best. :shock:


started right up...took it out for a spin around the block and now need to adjust the clutch. ..and double shift foot pedal a friend added...then should be ready to ride. Runs very nice


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twocams
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Motorcycle: 1985 GL1200 Aspencade, 2003 K1200GT BMW, 1969 R69S BMW
Sold : 84 V65 Magna, 82 Moto Guzzi, XS 1100 Yamaha,84 Wing Int., 80 650 Special, Only new bike 82 XV750 Virago (Guam),Honda 250,84 R100RT BMW,87 K100 LT BMW,93 K1100 LT BMW, 91 535 Virago, Honda 50

Re: GL1200 Backfire when shut off won't restart

Postby twocams » Tue Feb 23, 2016 7:39 pm

There isn't any clutch adjustment on the GL1200. They are all hydraulic.Most you can do is bleed the clutch system....or replace the clutches.....or

Twocams




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