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    Timing Mark wanders AQ131D Where do I start?

    I have a 1989 AQ131D, recently replaced cap, points, wires, etc but cannot set base timing --- the mark wanders about 10 - 20 degrees. The best I can do is set it at 6 btdc on the low end but it bounces to 20-25 btdc and then back to 6 btdc over and over. Is this a belt/tensioner issue, a...
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    Volvo Penta AQ131D - no fuel in fuel filter or line

    Can anyone advise a safe way to test fuel pump? I've done a lot of work on this engine (VP AQ131D) over the last month and am now trying to crank for the first time. It turns over when using starting fluid but won't start. Have checked fuel line and filter and no obstruction. No squirt of gas...
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    Flushing an open raw water system - Volvo AQ131d

    What fluid should be used to flush an open raw water system on this engine? The manual says a 50/50 mixture of water and 'corrosion-proof glycol' such as 'Esso Cutwell 40' or Shell Donax C or equivalent. I understand I should suck the fluid up thru the inlet hose at the transom, but I can't find...
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    Ballast Resistor on 1989 AQ131D ?

    In finalizing some winter work on 1989 Invader, I'm considering converting from the points/condesor setup. To order the correct coil/module combo from Pertronix, I'm asked if there is a ballast resistor - the VP owners manual doesn't show one, only 40A fuse and Relay. Can anyone help me answer...
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    OEM prop or upgrade

    I have a 16' Invader with a Volvo AQ131D / 275A drive. Current prop is 14x19 rh and pretty nicked up. There's a 15x19 SS on ebay that fits at a fair price. What impact does increased diameter have on the boat's performace? There appears to be plenty of room for the 15" diameter prop on the...
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    Brakes and turn but no running or tail lights

    Just got a used trailer and replaced all lights. Only brake, emergency flasher, and turn signals work. No tail lights or side marker running lights. Where do I start? Is there some adapter I need. I have a Ford Excursion stock tow package. The trailer harness is 3 male/1 female with G/Y/B/W.
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