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Engine will not start 525 sc

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Old 07-23-2010, 05:56 AM
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what ignitions are you running ?
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Old 07-23-2010, 06:28 AM
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I had 2 boats do the same but it was two
differant problems, one was the comoutor
and the other was a very cheap fix. It was
the kill switch over the key, wasnt being held
in enough buy the plastic clip.
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Old 07-23-2010, 08:07 AM
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I am running thunderbolt IVs, I only have one kill switch, I have twelve volts at the + side of coil. Thanks for the help so far. I will check the wire harness for corrosion.
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Old 07-23-2010, 01:39 PM
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No corrosion, that would be too easy I am running out of ideas. Any suggestions? Thanks so much.
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Old 07-23-2010, 03:03 PM
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It sounds like you are extremely rich. Can't remember if the 525 carbs have power valves but mine go bad from time to time and leak fuel into the intake and the motor won't run or stumbles/loads up. Check the carb when running/cranking over and make sure you can not see fuel coming from the main jets, etc. You shouldn't be able to see any fuel with the throttle blades closed. Don't stick your nose in too far in case of backfire. If you got it to start after much difficulty the plugs are firing.
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Old 07-23-2010, 03:03 PM
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Oh also needle and seat could be stuck.
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Old 07-23-2010, 03:05 PM
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Originally Posted by snake dance
I did pull 1 plug, it appears to be getting fuel. Its not spittering or sputtering at all, although that would be exciting.
Missed that comment. So, after you got back to the dock no fire whatsoever???
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Old 07-23-2010, 03:50 PM
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,,,,
Attached Files
File Type: pdf
16B4R2_boat_stuff.pdf (403.1 KB, 885 views)
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Old 07-23-2010, 05:29 PM
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Where is your ignition module mounted?????

The troubleshooting guuide in c deezy's is a good start. A weak or bad ground on the module or module case will end with the "replace Ign module" also though.
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Old 07-23-2010, 06:56 PM
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Thanks for the manual. I have spark, its just really weak. Manual helps quite a bit. Lets see what I can find out. Thanks again.
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