Mercuiser 140hp stern drive

[Ryanlewis2010]

Hey guys so i have a mercuiser 140hp not sure of anything els other then that can any one tell me where a model or seriel number would be.
I have two problems
1 no spark to the plugs. i think this is a wiring problem that the previous owners shop messed up, because there is one wire that is not connected that looks like it goes to the coil but both of the two wires on the coil are live shouldn't one be a ground? ill take pics of what im talking about b4 work tomorrow.
And problem number 2.is the tilt controls do not work except for the down (another problem thou it sounds like it should be going down but does not move) so any help will be appreciated
thanks
Ryan

 

[Bondo]

Re: Mercuiser 140hp stern drive

Hey guys so i have a mercuiser 140hp not sure of anything els other then that can any one tell me where a model or seriel number would be.
I have two problems
1 no spark to the plugs. i think this is a wiring problem that the previous owners shop messed up, because there is one wire that is not connected that looks like it goes to the coil but both of the two wires on the coil are live shouldn't one be a ground? ill take pics of what im talking about b4 work tomorrow.
And problem number 2.is the tilt controls do not work except for the down (another problem thou it sounds like it should be going down but does not move) so any help will be appreciated
thanks
Ryan

Ayuh,... Problem #1,... What do the Points look like,... Change 'em anyways...

Problem #2 is probably a Bad trim limit switch,...
By-pass it, 'n see if it'll trim up...

 

[Don S]

Re: Mercuiser 140hp stern drive

can any one tell me where a model or seriel number would be.

 

[dondi]

Re: Mercuiser 140hp stern drive

i have same engine. one wire to hot side of coil on mine, red one, others go to ground side. dont know for sure if yours is same

 

[Ryanlewis2010]

Re: Mercuiser 140hp stern drive

ok dondi here is what my coil looks like



Does that look the same
thanks don S ill look at that in the morn see if its there
and thanks bond-o i was planning on replacing the points already so ill double check that when i get the model number of the engine
and to bypass the switch i just jumper the wires under the panel correct?

Thanks for all the help

 

[Ryanlewis2010]

Re: Mercuiser 140hp stern drive

Hey i went looking to see if that plate was there but mine does not have it is there another way to find out the seirel

 

[Fishermark]

Re: Mercuiser 140hp stern drive

You definitely want to replace the points and condenser. The wires that are not connected probably go to the shift interrupt switch --- that will need to be reconnected and working before you get on the water. (But not needed to start the engine).

I would suggest bypassing everything that is uncertain for now --- simply supply 12v direct from the battery to the +pos side of the coil. Then connect the wire from the points (distributor) to the -neg side of the coil. See if you have spark.

 

[Ryanlewis2010]

Re: Mercuiser 140hp stern drive

ok but but i did a light test and it lit both post on top of the coil as if they were both + wich one should be the negative the one from the harness or the one to the distributor

 

[Fishermark]

Re: Mercuiser 140hp stern drive

There should be a "+" and a "-" somewhere on the coil. But assuming it has been installed correctly in the past, then the distributor wire is connected to the negative side of the coil. Remove all the wires and see which one(s) are hot with the key on.

 

[Ryanlewis2010]

Re: Mercuiser 140hp stern drive

Alright i will do that when ever the rain stops it supposed to rain all day today and tommorow i swear its a love hate relationship when it comes to boating in FL thanks ill let you guys know what i find out
Thanks

 

[Ryanlewis2010]

Re: Mercuiser 140hp stern drive

Alright so i got the spark going i will need to do the timing and get it running next. Also i got my motor to trim up by jumping the solenoid but now here is the kicker the pump turns on when i want it to go down but it only goes down a very lil if at all so now im asking for any ideas. also is it alright for there to be like grease from the inlet where the muffs go there is some all over the sterndrive unit
View attachment 118612
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View attachment 118615
also what type of drive is this alpha or anything?

 

[Ryanlewis2010]

Re: Mercuiser 140hp stern drive

BUMP Please help i wanna have this fired tonight

 

[Bondo]

Re: Mercuiser 140hp stern drive

BUMP Please help i wanna have this fired tonight

Ayuh,... It's a Model 1, with a leaking seal or 2...

Disconnect the aft ends of the trim rams to let the drive down, then ya can pull it...
It could be the ram's end caps dragging, or the drives tilt pins need greasin',...
Donno which is causin' it not to go down...

 

[Ryanlewis2010]

Re: Mercuiser 140hp stern drive

thanks bond-o what do you recommend replacing on the drive unit since it has sat 3+years bellow, seals(wich ill be replacing anyways) and would it be ok to fire it up if i did not put here in gear?

 

[Ryanlewis2010]

Re: Mercuiser 140hp stern drive

OMG ITS ALIVE!!!!!! so i got the beast to fire up and purred realitivly smooth then i had shut her down because of the time (stupid Neghboors) lol so now all i got to do is get the trim to let the motor down to see how all the drive unit is working then replace those seals and bellow and whatever els you think i should do

 

[CheapboatKev]

Re: Mercuiser 140hp stern drive

OMG ITS ALIVE!!!!!! so i got the beast to fire up and purred realitivly smooth then i had shut her down because of the time (stupid Neghboors) lol so now all i got to do is get the trim to let the motor down to see how all the drive unit is working then replace those seals and bellow and whatever els you think i should do

YES!

You do have water pumping through muffs right?
100% you need to pull the lower and change the impeller. Any boat that has sat for years should be the first item in the leg changed for your own piece of mind.

 

[Ryanlewis2010]

Re: Mercuiser 140hp stern drive

alright thanks and i finally found the serial number the PO gave me a bill from his mechanic that couldn't get it running (and the youngin 18yo did in less than 10 hours acutally working on it) Can anyone tell me what year motor this is SN 2911428

 

[Fordiesel69]

Re: Mercuiser 140hp stern drive

And you guys in FL can shove it!

You are getting your boats up & running, an we up north are already winterizing............

 

[Ryanlewis2010]

Re: Mercuiser 140hp stern drive

lol yep but we cant ski or stuff down here (well you can but im not) with all these damn gators haha

And will this seal kit work for my gen1 (thats what i was told) with engine serial number 2911428
Here is a pic of my stern
View attachment 118660
and that should include the impeller and the seals to fix this oil leak correct?
View attachment 118661

 

[CheapboatKev]

Re: Mercuiser 140hp stern drive

And you guys in FL can shove it!

You are getting your boats up & running, an we up north are already winterizing............

Yep..shoving off the trailer ..
come on down ford!