Mercruiser 135 AlphaOne Magnetic Pulse Generator

[Dahlonegaboater]

I am trying to replace the magnetic pulse generator (ignition coil) on a Mecruiser 135 HP Alpha One engine. How do you get the timer core removed to replace the coil under it?

 

[Anchor Management 1]

Re: Mercruiser 135 AlphaOne Magnetic Pulse Generator

Timer core? is that the rotor if so you need to break it off it is glued on from the factory.

 

[Dahlonegaboater]

Re: Mercruiser 135 AlphaOne Magnetic Pulse Generator

It is not the rotor. This is metal and is located under the rotor. The rotor comes off easily. I am trying to get to the ignition coil which is located under this timer core. (That's what it is called in the manual I found online.)

http://www.marinemechanic.com/Workhorse/index.htm
At this site, you choose the option for:
3.0L/LX EST IGNITION-1

 

[Dahlonegaboater]

Re: Mercruiser 135 AlphaOne Magnetic Pulse Generator

The Clymer manual I had and the online info didn't say anything about the removal of the pickup coil in the Delco EST distributor (2002 Mercruiser Alpha I, 135 HP). So I looked at the parts breakdown and decided that you have to remove the distributor to replace the coil. The pickup coil was included in the parts when I asked the dealer to give me all that I needed for a comprehensive tuneup. Seems like a lot of trouble for a tuneup. Just remember to replace the thin gasket between the bottom of the distributor housing and the block.

 

[Don S]

Re: Mercruiser 135 AlphaOne Magnetic Pulse Generator

On a Delco EST distributor, the only parts that gets replaced during a tuneup is the cap and rotor. NOT the pulse generator, nor sensor.