Question about 1986 Honda GL 1200 Aspencade Gold Wing

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87 Aspencade 1200 backfires between shifts and backfires deceleration and acceleration. Have had carbs cleaned and replacement kits installed. new spark plugs. synchronization of carbs also. Checked compression and timing. New fuel filters and checked fuel pump.

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Check for leaks around the exhaust headers,mine did what yours is doing,i replaced the copper exhaust seals in the head(exhaust ports),air is getting into your exhaust system and it mixes with the unburnt fuel and ignites causing the backfire,i replaced copper seals(about $2nz each) and problem went away

Posted on Jul 03, 2009

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1 Answer

1985 Goldwing, 1 cylinder is popping at idle when bike is cold


Hi, Anonymous if your carburetor/exhaust is:
COUGHING is usually caused by an air leak in the intake system and will generally have the same telltale signs, a wet or damp buildup of oil/gas seepage at the intake manifold to cylinder head or carburetor to intake manifold connection and in rare instances a worn throttle plate shaft and or seals.
POPPING on deceleration is usually caused by a lean fuel condition or an air leak in the exhaust system and is generally located where black carbon soot is seen as a flashing build up from any joint connection. This condition can easily be remedied by removing and cleaning both joint pieces and reassembling with high temp silicone and torquing the exhaust clamp to the proper spec.
SPITTING is usually caused by a faulty accelerator pump and or nozzle, or the float bowl needle and seat leaking and overflowing through the main jet mixing well nozzle, or the air-fuel mixture screw is adjusted too lean.
BACKFIRING is usually caused by a sticky/tight intake valve or a timing issue, 180 degrees out or cam chain off 1or 2 teeth.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
backfiring through exhaust GL1200 Information Questions goldwingdocs com
85 GL 1200 Aspy carbs popping when cold
Honda GL1200D Shop Manual
http://www.partsfish.com/page/oem-parts-for-honda
Honda GL1200 1986 Owner Manual

Sep 28, 2012 | 1985 Honda GL 1200 Aspencade Gold Wing

1 Answer

1986 aspencade 11,500 miles sometimes when starting engine backfires and will not start later will start and run fine.


I suspect the carburetor needs tuned to correct the air-fuel mixture in the mid-range.It's possible that the carb
was not thoroughly cleaned and/or the fuel system upstream of the carb was not cleaned and has re-contaminated
the clean carb.

Jul 03, 2011 | 1986 Honda GL 1200 Aspencade Gold Wing

1 Answer

1984 GL1200 Goldwing... 80k mi. ....bike will not run without choke on 1/4 to 1/2 open... when given throttle, the engine backfires and blows black soot out of exhaust... new spark plugs with gap set at...


This sounds like a fuel flow problem. I suggest removing and rebuilding and cleaning the entire system, meaning Carbs, filters and strainers in the tank. Old fuel turns to gel, and floats absorb fuel, sometimes, so inspedt everything. When finished set carbs with carb sticks, both at idle and at 2000 RPM, using hand throttle.

Oct 26, 2010 | 1984 Honda GL 1200 Aspencade Gold Wing

1 Answer

My 1999 Honda shadow backfires on deceleration after steady throttle what could cause this? I have tuned it and cleaned the carb but it still does it.


The most common reason for backfiring is lack of back pressure from changing the exhaust. To compensate for the flat spot you get you put in a jet kit. This leaves the possibility of more unburned gas getting into the exhaust. Honda uses Kei Hin carbs with a fuel shut off diaphragm to help limit this condition (backfiring) by turning off the fuel to the carbs during deceleration. Even stock exhaust can pop or backfire. Typically it is caused by air getting into the exhaust either past the copper o-ring gaskets in the head or leaking muffler connections from the head pipes to the mufflers. Try replacing all the exhaust gaskets and you should minimize this condition.

Sep 05, 2010 | 1999 Honda VT 750 CD Shadow A.C.E. Deluxe

1 Answer

Backfires on deceleration and also is getting black above shift side carb.


A lot of backfiring on deceleration is related to reused or leaking exhaust gaskets in the head . The gaskets are leaking air into the exhaust. If you are experiencing carbon on the intake side , I would recommend replacing the intake o-rings and gaskets, spark plugs, and spark plug caps. These can all be related to backfiring through the carburetors.

Aug 24, 2010 | 2005 Yamaha V Star 1100 Classic

1 Answer

Backfires on down shifts and when reving up. Mainly when the rpms are going down


Your idle mixture is too lean. You can adjust this by locating the mixture screw on the carb(carbs) and turning it counter-clockwise an 1/8th turn at a time. This will not affect running above 1/4 throttle, but will richen your idle circuit and the lean popping on deceleration. If you have misses above 1/4 throttle when accelerating, tou likely have trash in your jets and the carb will need to be removed and thoroughly cleaned.




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Jun 06, 2010 | 2007 Yamaha Roadliner S

2 Answers

HOW HARD IS IT TO REBUILD THE CARBORATORS ON A 1984 HONDA 1200 ASPENCADE


EASY!!!! sit at your kitchet table with some towels laid out. BUY a REBUILD KIT. Have fun : ) Easy

Mar 12, 2010 | 1984 Honda GL 1200 Aspencade Gold Wing

1 Answer

1984 Aspencade backfires in midrange RPMs


1. Check timing belts and ignition timing.
2. Service carburetors

Jun 12, 2009 | 1984 Honda GL 1200 Aspencade Gold Wing

2 Answers

Me transmission is stuck in second gear in my 1987 honda goldwing


You have a bent shift fork. The repair is major surgery by the dealer. Sorry for the bad news.

May 19, 2009 | 1987 Honda GL 1200 Aspencade Gold Wing

3 Answers

Backfiring


Sounds like you've got a carb with a clogged jet. My guess is that the surging was a moment where the carb was actually operating well enough for the bike to run properly on that cylinder. Could also be a spark problem but you should be able to determine if this is the case rather quickly. I'd probably go ahead and replace the plugs if you haven't already...that could help...but my guess is still going to be carbs.

Nov 20, 2008 | 1986 Honda GL 1200 Aspencade Gold Wing

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