GL1100 left side smoking white


Information and questions on GL1100 Goldwings (1980-1983)
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Ailingwing
Posts: 2
Joined: Wed Jan 09, 2019 3:40 pm
Location: Dallastown, PA USA
Motorcycle: 1982 GL1100, 1974 CL360, 1971 CT90, 1967 CL77 305

GL1100 left side smoking white

Post by Ailingwing » Wed Jan 09, 2019 3:58 pm



Here's what Ive done to try and mitigate this problem: New head gasket (was leaking coolant and oil around manifold and smoking like a biiiiiitch . :o :o -used OEM gasket at proper diameter), new valve seals, lapped valves lightly and tilt clearance of stems is within spec per my manual. Head was machined flat before installing. Compression 155 psi on ALL four cylinders. New water pump and associated oil seals and gaskets, Randakk's carb kit tackled step by step and everything replaced gingerly and double checked (my third set of GL1100 carbs rebuilt), new air filter, new fuel pump, filter and fuel lines, petock cleaned and rebuilt. Floats set at 15.2mm ( to allow more fuel because it's symptoms seem lean). Gas tank cleaned and re-installed. Ran brake cleaner through left headers when apart to begin to clean out baked-on oil deposits. Idle screws 3.25 turns out. New o rings on carb/head interface. New spark plugs gapped correctly and resistor caps. New battery, charging system working great. Synced carbs with mercury sync tool at 1000rpms. Ran marvel mystery oil and seafoam in engine oil and seafoam in gas for 25 miles on the road.

Problem: Starts up immediately with choke but left side warms up a wee bit slower than right but does heat up. Then it steadily and subtly backfires every few seconds mostly out of the #2 carb and a little out of the #4 carb. It hesitates on left side only when quickly throttled, right side fires up like a monster. I've screwed with carbs so many times I thought I'd ask for advice at this point... The slight backfiring is accompanied by white smoke which dies down to almost nothing, but takes 25-30 minutes to happen. Smells like oil to me. My only guess at this point is either timing (waiting on a strobe light in the mail to check) is early or late on 2 and 4 or the oil rings are failing and fouling the plugs. The plugs are nice and brown, I'm not seeing any oil though. But the white smoke smells like oil for sure. The smoke, stuttering-backfiring is getting to me after all this work and Im not sure what to check next. Thanks for any help that could be offered up!



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quasi2008
Posts: 109
Joined: Fri Oct 05, 2018 12:18 pm
Location: morgantown wv
Motorcycle: 1982 GL1100I INTERSTATE

Re: GL1100 left side smoking white

Post by quasi2008 » Wed Jan 09, 2019 4:16 pm

my 82 gl1100 was running fine then all of a sudden lost a bunch of power, throttle response was nil on takeoff. turned out the metering rod in the vacuum slide on #4 carb had fell apart. mine was smoking a bit also. might check the plug wires are not crossed to
man can't live on air alone!

Ailingwing
Posts: 2
Joined: Wed Jan 09, 2019 3:40 pm
Location: Dallastown, PA USA
Motorcycle: 1982 GL1100, 1974 CL360, 1971 CT90, 1967 CL77 305

Re: GL1100 left side smoking white

Post by Ailingwing » Wed Jan 09, 2019 4:43 pm

Have checked wires yep, they're correct. Hmm I'll check the slide for sure. Do you mean the needle? I buffed all four slides and made sure the needles were all the same height. Taking carbs out again this weekend. Thanks for the tip!

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Aussie81Interstate
Posts: 1061
Joined: Thu Nov 27, 2014 2:34 am
Location: Penrith Australia
Motorcycle: 2001 GL1500F6C Valkyrie
1982 CX500 Turbo (Historic registration - finally)
1981 GL1100 Interstate (sold)
1988 GL1500 (sold)

Re: GL1100 left side smoking white

Post by Aussie81Interstate » Wed Jan 09, 2019 6:24 pm

If the smoke is from the left side then do you leave the bike on the side stand ?
Could be some oil seeping past the valve stem seals...

Could also be the bike is still burning off some of the loosened oil in your exhaust as a result of the brake cleaner you have used - the oil residue might have been accumulating for a while..

If it is not blowing smoke after it has warmed up I would ignore it..



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