Setting the timing on a 502 Mag Fuel Inj
06-16-2006, 06:58 AM
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Setting the timing on a 502 Mag Fuel Inj
Is there anything special that need to be done to a Fuel Injected 502 to set the timing? I am guessing something needs to be unplugged or capped off like on a car.
06-16-2006, 09:21 AM
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Re: Setting the timing on a 502 Mag Fuel Inj
If you do not have a plug with the jumper wire to plug into the data plug, then you can use a paperclip. Start the engine, then insert a bent paperclip into the terminals labeled A and B. This will put the computer in base timing mode. Now set the timing to 8 deg. You may have to raise the rpm to about 1500 to stabilize the timing. When it is set, remove the paperclip.
06-16-2006, 10:22 AM
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Re: Setting the timing on a 502 Mag Fuel Inj
Where is the plug?
Originally Posted by TMP racing
If you do not have a plug with the jumper wire to plug into the data plug, then you can use a paperclip. Start the engine, then insert a bent paperclip into the terminals labeled A and B. This will put the computer in base timing mode. Now set the timing to 8 deg. You may have to raise the rpm to about 1500 to stabilize the timing. When it is set, remove the paperclip.
06-16-2006, 10:41 AM
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Re: Setting the timing on a 502 Mag Fuel Inj
Originally Posted by duksrule
Where is the plug?
#5 in the picture
http://www.mercruiserparts.com/Show_...NESS+%28EFI%29
Last edited by the duke; 06-16-2006 at 10:45 AM.
06-06-2007, 08:07 PM
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06-06-2007, 08:18 PM
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I found it:
http://www.offshoreonly.com/forums/s...d.php?t=103342
It even has a picture of the plug with pins A and B shown.
http://www.offshoreonly.com/forums/s...d.php?t=103342
It even has a picture of the plug with pins A and B shown.
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