Mercruiser 3.0 Alpha One #OC597939 parts help

[trooper1954]

I have the above listed motor, but don't have an owners manual or a service manual.I recently had some issues with starting and had a tech look at it...there was a ground leak from the coil which caused the starting problem While fixing this, he suggested I replace both the plugs and the distributor cap, but I have no idea what plugs this model engine requires, or the part numbers for them or the distributor cap. Can anyone point me to a parts manual or schematic that would give me this info.?
Thanks.

 

[tech338]

Think you need Mercury Service Manual #13. Try this site http://boatinfo.no here http://boatinfo.no/lib/mercruiser/manuals/mercruiser13.html#/0 .

AC-MR43T
Champion RV15YC4
NGK BR6FS

or

AC-MR43LTS
Champion RS9YC
NGK BPR6EFS

Depending in if it is a LX or not.

 

[alldodge]

AC-MR43T
Champion RV15YC4
NGK BR6FS

Agree, these are the plugs

Cap 393-9459Q1
Rotor 8M6001251
Points 34235T
Condensor 8M6001218

You would use Manual 10

This is your parts breakdown
https://www.mercruiserparts.com/2-5l-gm-153-i-l4-1987-1989-0b531854-th

 

[trooper1954]

Thx tech338.....where would I find out on the engine if this is an LX or L?

 

[tech338]

Think the serial number indicates its a 1989 engine. That should be an regular (non - LX) - don't think they made LX that year. I could be wrong.

I think you can find out from the 3rd link in this post. Blocked for me at work, so I couldn't check. https://forums.iboats.com/forum/eng...miscellaneous-mercruiser-information?t=329915