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Thread: New project Bike

  1. #21
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    Quote Originally Posted by BlackThunder View Post
    The motor turns. The right side spark plug holes have suction, the Left side it’s hard to tell if it has good suction, not sure if my finger was covering the hole that great. But they still blow air out. Also the inside of the clutch cover is nasty and the same as the oil filter area.
    If it was my project I'd do a compression test to see if there's anything wrong with the cylinder bores or rings, you can do this by jump starting off a battery to spin the engine. If that turns out OK then I'd be looking to do what has already been suggested and dropping the pan to clean out the screen and anything else I can get a clean rag into to wipe that crud off. Then I'd run some kerosene through it to clean up the oiling system (with the starter turning the engine over) followed by another flush with a low cost motor oil that'll flush out the kerosene.
    1983 Naked Goldwing Interstate GL1100

    1982 GS450txz (former bike)

    "It is difficult to get a man to understand something when his salary depends upon his not understanding it" ~ Upton Sinclair

  2. #22
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    Do I need to fill it back up with oil for the compression test?

  3. #23
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    Trying to do the compression test. But nothing happening when hitting the start button. Headlight taillights an turn signal work, horn trying to work.

    What connects to the 2 prong connector under the right handlebar? Thereís nothing connected right now.

  4. #24
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    Quote Originally Posted by BlackThunder View Post
    Trying to do the compression test. But nothing happening when hitting the start button. Headlight taillights an turn signal work, horn trying to work.

    What connects to the 2 prong connector under the right handlebar? There’s nothing connected right now.
    I'm assuming you're referring to the green/yellow wires that go to the engine kill switch, you could just connect those or jumper them together to complete the circuit to the starter relay.

    As to oil in the engine I'll let someone else chime in on that one in order to avoid being bombarded with out dated produce. You should probably run a google search or look around on youtube for instructions on doing a compression test. Generally you test it as-is then put some oil in the cylinders through the spark plug holes to help seal up any scoring on the cylinder walls.
    1983 Naked Goldwing Interstate GL1100

    1982 GS450txz (former bike)

    "It is difficult to get a man to understand something when his salary depends upon his not understanding it" ~ Upton Sinclair

  5. #25
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    salty_monk is offline Forum LongTimer GSResource Superstar
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    I wouldn't have thought a compression test is going to tell you much at this point. You said you're going to pull the engine apart? If so you'll be able to see as you go. They are incredibly hard to kill.

    My guess for what's in your oil is oil varnish. Too much to be part of the chain guides. Could be the remains of an old filter that's broken down. They are very hard to tune with those pods I see fitted, likely it was never jetted right.

    Taking the oil pan off is easy. A bunch of 10mm bolts, tap it with a mallet & pull it off. You'll see the strainer as soon as you do. Good luck!

    1980 GS1000G - Sold
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    1980 GS550E - Fixed & given to a friend
    1983 GS750ES Special - Sold
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  6. #26
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    Quote Originally Posted by salty_monk View Post
    I wouldn't have thought a compression test is going to tell you much at this point.
    My thinking in suggesting it is to see if it's already toasted before going any further time and money wise.
    1983 Naked Goldwing Interstate GL1100

    1982 GS450txz (former bike)

    "It is difficult to get a man to understand something when his salary depends upon his not understanding it" ~ Upton Sinclair

  7. #27
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    I did the screwdriver bypass trick... from my tests each cylinder was at around 120. This is my first time doing a compression test. Also remember that the compression test I did was with the exhaust (Vance heins, 4-1) removed. Is that decent compression?

  8. #28
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    salty_monk is offline Forum LongTimer GSResource Superstar
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    120 is the lower end of spec. I’d expect that with the way you’re doing it. The fact that they match is good....

    1980 GS1000G - Sold
    1978 GS1000E - Finished!
    1980 GS550E - Fixed & given to a friend
    1983 GS750ES Special - Sold
    2009 KLR 650 - Sold - gone to TX!
    1982 GS1100G - Rebuilt and finished. - Sold

    www.agadisplay.com
    www.parasiticsanalytics.com

    TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/

  9. #29
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    If it's been sitting awhile you might see that number go up after you have it up and running. At 120psi I'd move forward starting with the engine first before investing in tires, etc.
    1983 Naked Goldwing Interstate GL1100

    1982 GS450txz (former bike)

    "It is difficult to get a man to understand something when his salary depends upon his not understanding it" ~ Upton Sinclair

  10. #30
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    I plan on starting the engine first . My first step I initially wanted to try and get this broken exhaust stud out, but after doing some searching I think it might be better to take the head to a shop to have them remove it. Itís broken off flush so from what Iím gathering from other searches the favorite method here is to weld a nut on. Second option is to drill out and Tap. Ez out is not a good option. Tough decision... any suggestions

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