knuckle47
Advanced Contributor
"I am running two 454 Crusader
"I am running two 454 Crusaders on a common 250 gallon fuel tank both have Racor separators installed as well as the cartridge fuel filters on the tank. Starbord engine runs perfectly, rock steady 160 temp. Port engine started poppping at 3200 to 3900 rpm thru the carb. Checked the 10 degree timing...perfect. Swapped ignition modules, could not find the source of the trouble. Under 3100 and over 3900 rpm, the engine is terrific however the temp is about 15 degrees higher above 4000 then the other and about 15 degrees lower under 3000 rpm then starboard. In the range from 3200 to 3900 this popping backfire is continuous but random. Removed the flame arrestor and shook out about 2 tablespoons of NON salty water. Removed the carb to find another tablespoon of water in the Carter to Crusader manifold adapter plate. I notice the hoses that go to the flame arrestor have a small ( pea sized) accumulation of milky oil, likely from mixing with this water somewhere. The crankcase oil seems fine. These hoses also puff out some blue smoke when the cold motor is started. The carb is similiar to the Edelbrock 1410. I cleaned the metering rods and passages thinking it was a lean condition. But this water baffles me. It could be condensing or steam distilling from somewhere but I am at a loss as to where to look next for this problem. Other than SOME OTHER SOURCE spraying water in this vicinity, does anyone have a clue where to go next? Thanks..AL"
"I am running two 454 Crusaders on a common 250 gallon fuel tank both have Racor separators installed as well as the cartridge fuel filters on the tank. Starbord engine runs perfectly, rock steady 160 temp. Port engine started poppping at 3200 to 3900 rpm thru the carb. Checked the 10 degree timing...perfect. Swapped ignition modules, could not find the source of the trouble. Under 3100 and over 3900 rpm, the engine is terrific however the temp is about 15 degrees higher above 4000 then the other and about 15 degrees lower under 3000 rpm then starboard. In the range from 3200 to 3900 this popping backfire is continuous but random. Removed the flame arrestor and shook out about 2 tablespoons of NON salty water. Removed the carb to find another tablespoon of water in the Carter to Crusader manifold adapter plate. I notice the hoses that go to the flame arrestor have a small ( pea sized) accumulation of milky oil, likely from mixing with this water somewhere. The crankcase oil seems fine. These hoses also puff out some blue smoke when the cold motor is started. The carb is similiar to the Edelbrock 1410. I cleaned the metering rods and passages thinking it was a lean condition. But this water baffles me. It could be condensing or steam distilling from somewhere but I am at a loss as to where to look next for this problem. Other than SOME OTHER SOURCE spraying water in this vicinity, does anyone have a clue where to go next? Thanks..AL"