Delco EST timing question on Mercruiser 3.0L
 

Hi I have a Mercruiser 3.0L in my 2002 Bayliner that I am trying to
check the timing on. The first time I tested it with my timing light
it said it was 12 degrees BTDC. Next I decided to read the shop
manual :) and it said I had to join to white wires comming off of the
distributer and to disconnect the Shift interrupt switch. I did that
and tried checking the timing again and it was still 12 degrees
BTDC???

What did I do wrong? I was expecting the reading to change when the
two white wires are connected.

Oh, my idle runs at 900RPM and the manual says my timing should be 2
degrees ATDC.

Delco EST timing question on Mercruiser 3.0L
 

On May 6, 2:33 pm, troyboy wrote:
Hi I have a Mercruiser 3.0L in my 2002 Bayliner that I am trying to
check the timing on. The first time I tested it with my timing light
it said it was 12 degrees BTDC. Next I decided to read the shop
manual :) and it said I had to join to white wires comming off of the
distributer and to disconnect the Shift interrupt switch. I did that
and tried checking the timing again and it was still 12 degrees
BTDC???

What did I do wrong? I was expecting the reading to change when the
two white wires are connected.

Oh, my idle runs at 900RPM and the manual says my timing should be 2
degrees ATDC.

I figured it out. The interrupt switch wires need to be connected
together too.

Delco EST timing question on Mercruiser 3.0L
 

On my merc the shift interrupt actually interrupts the ignition. Connecting
them together would keep it from running. Is that the correct idle speed?
Seems a little high even for a 4 cylinder.

"troyboy" wrote in message
ups.com...
On May 6, 2:33 pm, troyboy wrote:
Hi I have a Mercruiser 3.0L in my 2002 Bayliner that I am trying to
check the timing on. The first time I tested it with my timing light
it said it was 12 degrees BTDC. Next I decided to read the shop
manual :) and it said I had to join to white wires comming off of the
distributer and to disconnect the Shift interrupt switch. I did that
and tried checking the timing again and it was still 12 degrees
BTDC???

What did I do wrong? I was expecting the reading to change when the
two white wires are connected.

Oh, my idle runs at 900RPM and the manual says my timing should be 2
degrees ATDC.

I figured it out. The interrupt switch wires need to be connected
together too.