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    Holley carb on Volvo Penta 3.0 GSM-A will not idle

    ScottO6, I disconnected the throttle cable and operated the throttle by hand. The idle speed screw is all the way counterclockwise (to slow the idle). The throttle blades are fully closed. Throttle plates were reassembled correctly and are closing fully. Lou C, spent significant time...
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    Holley carb on Volvo Penta 3.0 GSM-A will not idle

    Just rebuilt a Holley marine carb series 2300 serial number 80316-3. It is original to a 2001 Model year Volvo Penta stern drive with a 3.0 liter GSM-A engine. I have no idle after carb rebuild. Even with the throttle idle speed screw all the way out, the engine won't slow to less than 1000...
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    What is this leaking from the Holley carb base? (includes pictures)

    After a rainstorm, when opening the engine bay I noticed a lot of condensation... and this! What is leaking from the carb base? Bad base gasket? No water in crankcase oil. Plugs look good. 2001 Volvo Penta 3.0 GSM-A runs fine (but has a high idle and some blowby). New to me boat with only 118...
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    Workshop manual for 3.0 liter GSM-A

    Newbie here. Having difficulty finding a workshop manual on line for a 2001 Volvo Penta 3.0 liter GSM-A. Any help is appreciated. Feeling very lost without a real workshop manual!
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    Cockpit cover available?

    Is it possible to purchase a bow cover and cockpit cover for 2001 Glastron SX-175? Are there good aftermarket suppliers for these?
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    Teleflex controller feedback please

    I had two Teleflex SL-3 sidemount controllers fail. In both cases the throttle only button stuck and we were unable to shift gears. The last one failed on the second use and my son spent the night on the lake! Is this a known problem with the Teleflex throttle only button design? Is the...
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    Initial timing question

    I thought initial timing meant the timing at idle. Is that correct? However, the manual for the 3.0 L calls for Initial -2° 600 RPM 8° Please explain for the newbe Volvo Penta 3.0 GSM-A
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    Holley carb idle adjustment screw

    2001 Volvo Penta 3.0 GSM-A with Holley carb. I adjusted the idle mixture screws for best rpm/vacuum reading. The rpms increased as screws turned in (leaner) from the starting point of 1.5 turns out. Both screws now sit about 1.0 turns out. I can't slow the idle down with curb idle screw. The...
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    Fast idle cam on marine Holly carbs?

    Does the Holley carb on a Volvo Penta 3.0 GSM-A have a fast idle cam like its automotive counterpart? Or do you warm the engine using the throttle only button?
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    Throttle control override switch

    Just purchased a replacement Seastar Morse Telefex SL-3 throttle control. It has a push button VOLVO PENTA THROTTLE CONTROL OVERRIDE SWITCH PN 3856848. What is the purpose of this switch?
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    Valve cover venting

    New to me 2001 3.0 liter GSM-A with 118 hours. My first sterndrive. Please help me understand valve cover venting. Front hole PCV - valve rattles when shaken and has strong suction. Rear hole rubber hose to spark arrester. When pulling that rear hose with engine running, there is air blowing...
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    25 HP Johnson primer solenoid - I'm stumped!

    I purchased a used 25 HP Johnson outboard (J25RLCDC) 1986 model formerly a rope start converted to electric start. Can't cold start without removing hood, turning the red primer solenoid lever to the manual position and pumping the fuel line bulb. My first step was to check the solenoid for...
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