Distributor cap for 3.0L 181/L4 engine

[Days bhai]

My mechanic replaced the distributor cap and the engine makes a loud knocking sound when you accelerate. What exact distributor cap goes in the engine. The boat is 2000 bayliner model 1952 LX cuddly

 

[San_Diego_SeaRay]

My mechanic replaced the distributor cap and the engine makes a loud knocking sound when you accelerate. What exact distributor cap goes in the engine. The boat is 2000 bayliner model 1952 LX cuddly

If you have the Serial Number you can to to the official Mercury Marine website and launch the parts catalog: https://www.mercurymarine.com/en/us/parts-and-accessories/parts-catalog

Put the serial number in, then you'll get some results on the window to the right. Should be under DISTRIBUTOR AND IGNITION COMPONENTS section. Be aware of the color legend in the upper right. BLUE parts have been superceded w. a new part number.

 

[Scott06]

My mechanic replaced the distributor cap and the engine makes a loud knocking sound when you accelerate. What exact distributor cap goes in the engine. The boat is 2000 bayliner model 1952 LX cuddly

first take it back to him as timing at be off and this is detonation or something amiss like firing order. if the engine is original it should have the delco est .
this is a parts list of what i think is your engine but best to put in serial number.

MerCruiser 3.0L GM 181 I / L4 Est Ignition Components Parts

MerCruiser 3.0l gm 181 i/l4 est ignition components parts. Buy a genuine Mercury Quicksilver or aftermarket part.

www.marineengine.com