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1996 Volvo Penta 5.0 FL will not idle

walkerg2001

New member
When I last used the boat in December I noticed a slight miss in the port engine with the occasional back fire at high RPM of my 96 Regal 292 Commodore. Before I put it in the water again I changed the plugs, plug wires, rotor, and distributer cap on both engines. The miss and back fire disappeared but now she will not idle. The engine runs fine for 15 to 20 minutes and gets rough and dies. It starts right back up I can get up on a plane and she runs fine at high RPM but will not idle.
I changed the fuel filter and had the carburetor rebuilt and still have the same problem.
 
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