1982 GL1100A Low Compression - Steve Saunders Goldwing Forums

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post #1 of 10 (permalink) Old 07-14-2019, 11:33 AM Thread Starter
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Year: 1982
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1982 GL1100A Low Compression

Hello again. Back to the Shade Tree Refugee, 1982 GL1100A with a single, Solex knock-off Carb. I acquired a Harbor Freight Compression Tester. Cold Compression is at about 60 Lbs. per cylinder. It does start occasionally but most of the time I just manage to run the battery down trying. My good ole timing light shows that the timing is on the money at 1F. I have tried adjusting the carb to 3 turns out on the large and small adjustment screws. It just seems to start when it feels like it. I am at a loss as what to try next.

1982 GL1100A Shade Tree Refugee
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post #2 of 10 (permalink) Old 07-14-2019, 12:22 PM
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Were you holding throttle wide-open while testing compression? If not your readings will always show low.

1972 CL-350 (1980-1988) sold
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1993 GL1500 Aspencade (2017-)
1983 Trav-Lite Camper (2010-)
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post #3 of 10 (permalink) Old 07-14-2019, 01:31 PM
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Squirt a tablespoon of oil in each cylinder and try again but also be aware your compression tester may be the problem, I have a cheap one that shows way low. Try yours on another engine.

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post #4 of 10 (permalink) Old 07-14-2019, 01:35 PM
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Being that even I too would suspect the gauge.

Advise given here is free and comes with no warranty "Caveat emptor"

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post #5 of 10 (permalink) Old 07-14-2019, 05:49 PM
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and, did you have ALL of the spark plugs removed so the other cylinders are not loaded?
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post #6 of 10 (permalink) Old 07-15-2019, 09:54 PM
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Make sure your tappets are adjusted correctly. Loose or tight clearances will mess up the compression test.

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post #7 of 10 (permalink) Old 07-18-2019, 07:27 PM Thread Starter
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Good advice all around, I'm going to take notes. It started today but would not idle on its' own. I had the solex carb adjusted at 2 turns on the large adjustment and 3.5 turns on the small adjustment.

1982 GL1100A Shade Tree Refugee
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post #8 of 10 (permalink) Old 07-18-2019, 07:59 PM
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Turn the idle screw up until it idles fast. Then as it warms up slowly back off the idle speed.

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post #9 of 10 (permalink) Old 07-18-2019, 09:55 PM
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Quote:
Originally Posted by bmcfarris View Post
Good advice all around, I'm going to take notes. It started today but would not idle on its' own. I had the solex carb adjusted at 2 turns on the large adjustment and 3.5 turns on the small adjustment.
If that's the common VW carb the large screw is the idle speed adjustment. The screw on the throttle arm is to set the throttle plate so it is just barely open, enough to keep the butterfly from sticking. The small screw on the side is the idle mixture.

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post #10 of 10 (permalink) Old 07-22-2019, 03:25 PM
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I recently resurrected a 1977 wing. I also had the Harbor Freight compression tester. Do yourself a favor and throw that thing away!
all four cylinders read about 60 PSI. I borrowed a compression tester from my local auto parts store and, magically, all four cylinders were at 135 PSI.
The HF unit lacks a schrader valve in the end that screws into the spark plug hole, giving you a mostly useless reading.
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