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1989 74L Rough Idle

fat_girl

New member
"Just bought a 1989 Regal Velo

"Just bought a 1989 Regal Velocity w/454 Chevy power, boat ran excellent first out of the hole, then experienced rough idle at 1000 RPM after slowing down. Seemed real sluggish after that, but runs smoothly after planing off. Any thoughts? Thinking timing is out and may need general tune-up?
Thanks, Mike"
 
thats the best place to start

thats the best place to start michael General tune up also get a can of seafoam and put half in the gas tank and half in the oil. Has it sat very long before you bought it?
 
"vacuum leak at base of carb,

"vacuum leak at base of carb, probably the gasket or loose screws,"
 
"Thanks Guys, I'll start w

"Thanks Guys, I'll start with the easy stuff: timing, maybe plugs and wires. The previous owner ran sea foam every third tank."
 
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