Offshoreonly.com - Holley/ Starting issue

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what am i missing here?

got the 3 things needed to make fire

any one in here have a Holley system?

Just for kicks I’d take the wire going to the purple wire and jump it straight to the battery and try starting it.

Electronic stuff can really suck.

The switched 12v purple wire was not designed to have another device connected to it, whats the current draw of the controller ??

Fwiw, I ran the purple wire to trigger a relay to power the EFI. I think that little guy is only 22awg or so.

The purple wire to the
EFI doesn't power it. It just turns it on.
the 50* timing setting is the mechanical timing you have to physically set the distributor to it is not the timing you set on the computer.
You can't advance timing you can only delay it. SO you set the distributor at 50* timing and then the EFI delays the timing to what ever it wants.
So if you don't have the initial 50* timing set properly than your EFI computer set timing will not be correct.

He stated it ran fine on the dyno so why would the timing / distributor need to be set.....

I didn't read that it ran on the dyno. Where do you read this?
If it ran on the dyno and he has spark and fuel it would be running now.
Something is not set right.
Are the injectors getting power?
If the timing is not correct it is not going to run.

LTZCrew mentioned it twice.

Quote:

Originally Posted by LTZCrew (Post 4687429)

...This motor was running one the dyno less then a month ago Only some wiring and the fuel system is different Confirmed spark well cranking Confirmed injector pulse and fuel pressure well cranking...

Quote:

Originally Posted by LTZCrew (Post 4687491)

...Have fuel have spark have air. Was running on dyno not long ago. Nothing on the motor it self has changed. Only new things are fuel system. Cannon plugged into the rest of the boat Ecu is mounted to the boat. And running off boat batteries...

not sure on current draw of the computer-

the red/white wire as far as i knew is only a signal wire to tell the ECU im cranking the motor unless im missing something in the diagram, i don't think it should really have any draw

it was on the dyno running so im was going after something that has changed, could have changed or is totally different

this timing thing has me thinking tho. i talked to the installer and they say they did not pull the distributor but who knows. it looks like it would be a super tight fit to install this motor with out pulling it.
to check this 50* i would disable the computer control to the distributor - pull the highlighted connector - and fuel injectors and crank the motor and have 50* with a timing light showing at the TDC mark on the balance?

just want to make sure im checking this right.

with the merc manual for the 575SCI it shows base timing set at 8*, would this be checked the same way or with the computer having control
want to make sure im checking it correctly