Fuel pump and valves quit working


Information and questions on GL1100 Goldwings (1980-1983)
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nopeda
Posts: 1
Joined: Wed Jul 31, 2013 11:03 am
Location: Buford, Georgia
Motorcycle: 1983 GL1100 Aspencade

Fuel pump and valves quit working

Postby nopeda » Tue Aug 20, 2013 5:28 pm



Hi,

I have a 1983 GL1100 Goldwing Aspencade that died on me. We found that the fuel pump had quit working, then that the cam shaft that runs it isn't turning, then that the valves aren't moving either. Is there a chain that runs across the front of the motor to turn all that? If so, how hard is it to replace? Does the radiator have to come out? Any help understanding and suggestions about this would be very much appreciated!

Thanks,
David



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PoolDude
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Motorcycle: 1975 GL1000

Re: Fuel pump and valves quit working

Postby PoolDude » Tue Aug 20, 2013 5:56 pm

Sounds like you broke a timing belt. Hopefully you didn't put a valve through a piston in the process. If not should be a fairly simple repair. Replace both belts and I would replace the belt tensioners. The place to start is getting a good manual.

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dingdong
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Re: Fuel pump and valves quit working

Postby dingdong » Wed Aug 21, 2013 7:06 am

Yes to a broken belt. The minimum damage "will" be at least two bent valves.
Tom

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wjnfirearms
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Re: Fuel pump and valves quit working

Postby wjnfirearms » Wed Aug 21, 2013 8:01 am

Remove the front covers at the bottom on the engine below the radiator. The timing belts are there. As soon as the covers are removed, which isn't difficult, you'll see what's what.

If one snapped or stretched, or both, the possibility of valve damage is significant, especially if you were doing highway speeds when it died. These engines are what's called "interference engines". This classification of engine has the inherent tendency to have the valve strike the piston heads when a timing belt breaks causing varying degrees of damage to the valves. That is because by design, the valve stroke brings the valves (mainly the exhaust valves) down enough into the combustion chamber to interfere with the travel of the pistons when the timing of the engine goes way off, as happens when the timing belt breaks. There are several makes of car engines that do this also. When this happens, the only real way to see if there is damage and to what extent is to remove the heads for examination. Usually, the pistons don't suffer any real damage, but the tops of the heads should be checked also just in case.
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WingAdmin
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Re: Fuel pump and valves quit working

Postby WingAdmin » Thu Aug 22, 2013 12:57 pm

Have a look at the beginning of the How to remove and replace your timing belts article. It describes how the belts work, what an interference engine looks like, and just what you should be expecting when you pull the engine apart (with some pictures).




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