77 GL1000 popping

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leggman
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77 GL1000 popping

#1

Post by leggman »

My 77 has a issue, When I first start it up I get some popping and a little backfiring until it warms up.
I sprayed brake cleaner around the intake tubes and that did not make it rev up so I dont believe there are any leaks. Once it is warm it smooths out and runs great. Any ideas? I am thinking maybe coils and or wires?
Don R
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Re: 77 GL1000 popping

#2

Post by Don R »

Have you checked the valve lash?
78 GL 1000, 70 CB750 sandcast, 70 CB836 hot rod, 1124cc 750 dragbike resto project.
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MattMcCoy
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Re: 77 GL1000 popping

#3

Post by MattMcCoy »

Is the popping in the exhaust or intake?
1983 GL1100A Aspencade
1977 GL1000
1978 GL1000
1979 GL1000

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BlueThunder
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Re: 77 GL1000 popping

#4

Post by BlueThunder »

Popping is either water in the mufflers or exhaust leak.
...Brian
2014 CTX1300 Deluxe - BlackThunder aka Predator
1977 GL1000 - Ox
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pidjones
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Re: 77 GL1000 popping

#5

Post by pidjones »

Just until it warms up? They run pretty rough on the choke, so just give it time to warm and don't worry. We have been spoiled by EFI.
"Love 'em all.... let God sort 'em out!"
Ex 2006 GL1800 - the Black Pearl SOLD! to make room for:
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1975 Red GL1000 project - ex Pistol Pete project
1972 Triumph T150V Trident rescue - finished and FOR SALE!
1976 Yamaha RD400c
1978 GL1000 with '75 engine - the Hunley
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