Re: identifying my motor 3.0l or lx
hi there i have a 1990 mercruiser 3.0 how can i tell if its an l or lx model the engine serial no is oc605198 i am trying to sort out ignition problems and the ignition control box has different part numbers between the two models being 18811t1 for the l and 18811t2 for the lx naturally my control box no is unreadable
thanks mickl
it has the ddis ignition system which is proving extremely hard to source in the uk so i will have to import parts from the us so i need to get the right parts hence i need to know if it is an l or lx.
mick
Hi, You are looking at the wrong part numbers for youe engine.
Going by your engine serial number and going by Mercruisers service bulletin number (95-11) the correct part number for your engine control module is (
18811T).
The part numbers (18811t1 for the l and 18811t2 for the lx) that you are looking up are for engine serial number OC856559 and above.
Your engine serial number is below
OC856558 So that makes your engine a 3.0L, And that makes your engine control module,
part number (
18811t).
Your engine specs are as follows,
(1) module advance: 26 degrees.
(2) initial timing: 8 degrees.
(3) total advance timing: 34 degrees @ 2600RPM's
Here is a link to your service bulletin, Yours is the second page down, Then read the next three pages down.
http://www.boatfix.com/merc/Bullet/95/95_11.pdf
