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GL1200 carb issue, or electrical issue

1836 Views 22 Replies 5 Participants Last post by  ole wing
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this is my first post,
after starting in the am after off choke,i take off with my 1985 aspy will popp and backfire till i get over 3000 rpm,i was trying to get the carbs sync before we did that we did a compression check 3 cyls has 180lbs.1 cyl had 130 lbs we added oil and it cam eup to 180 like the rest,i have taken the carbs apart twice and cleaned them,still having the same issue,and it seems to be getting worse since the mornings are getting colder
sorry for the long post any ideas thank you
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Welcome to the forum.

Sounds more like you are sucking air somewhere.
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OK, the shutting off could be a few things. Ignition switch, main (dogbone) fuse, wires on top of the starter relay, loose or broken connection just about anywhere in the ignition circuit.

Most likely, on top of the relay, but since you're already there, change the main fusetoo.

In an earlier post you said the PO drilled the plenum. What exactly does that mean?
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Yes, holes in the air cleaner housing may cause a lean condition. I see those listed on eBay and ******'s for pretty cheap. Might be worth doing.

Meanwhile, some duct tape will let you know if the holes are the cause of your problem.
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