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I just installed a new longblock after burning a hole in the piston last year, I have a 1995 Volva Penta Ford 302 with 2 brl carb, the distributer has no points and just a red and black wire coming out of it, I set the timing to 10deg BTDC and have the Idle screw on linkage all the way out and engine Idles at 1,000 rpm, I can turn the Idle mixture in and the idle will drop but then engine dies and hard to start, there are 2 screws, the book says 1 turn out but I had to put them at almost 2 to keep boat running, any help would be appriciated, also not sure what caused hole in piston, thinking bad gas. Thanks

Look into the throats of the carburetor with a flashlight. (you may need to hold the choke open). Look down to the throttle butterflies. With the idle screw all the way out, the butterflies should be closed all the way to the sides of the venturi wall. This should be a setting that would have the idle way to low for the engine to keep running. Make sure both butterflies are closed exactly the same. If one of the butterflies got bent in shipping, it could be allowing extra air to enter (and therefore fast idle).

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"Knot Easy" 2000 Horizon 240 Volvo 5.7GS /SX
tow: 2017 Honda PILOT EXL-AWD
prev. boats:
'87 Chaparral 198CXL 4.3 OMC Cobra
'69 Jetstar 16ft Ski Boat, 115hp Yamaha
'68 Aluminum Jon Boat, 3hp Sears
'64 Water Wings

Thanks for reply, It looked like they were shut all the way but I will check to confirm tonight

Your throttle cable linkage is adjustable.
Ensure it's not too tight by removing the cotter pin & checking the play.

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2011 Four Winns H180 SS.
Aussie built Mustang 2800.
SOLD - 1997 Four Winns Horizon RS