SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: Tikotiko on July 24, 2020, 09:32:55 PM

Title: I just cannot catch a break
Post by: Tikotiko on July 24, 2020, 09:32:55 PM

Out of the water started fine but i noticed black smoke. Then i really noticed the smoke when it was in the water cause my exhaust is in the water. Never noticed it at home but maybe just didnt notice it. It didnt feel good at all. It seems to be holding back and wont idle. Im starting to think its a pump issue. As soon as i took it out of the water it starts and sounds great. Brought it home started it again just to see whats up and again sounds great but doesnt feel great in the water

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Title: Re: I just cannot catch a break
Post by: angermgmt on July 25, 2020, 07:30:45 AM

Sorry to hear that. Not sure if the smoke is related to the pump. How sure are you on your carb adjustments/tuning?


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Title: Re: I just cannot catch a break
Post by: FordLover on July 25, 2020, 10:23:36 AM

Quote from: Tikotiko on July 24, 2020, 09:32:55 PM

Out of the water started fine but i noticed black smoke. Then i really noticed the smoke when it was in the water cause my exhaust is in the water. Never noticed it at home but maybe just didnt notice it. It didnt feel good at all. It seems to be holding back and wont idle. Im starting to think its a pump issue. As soon as i took it out of the water it starts and sounds great. Brought it home started it again just to see whats up and again sounds great but doesnt feel great in the water

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Man what a bummer. You are really battling this thing.
Black smoke would make me think of a tuning type issue. Either with the carb or something else. Wouldn't think pump.
Hope it is a simple fix

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Title: Re: I just cannot catch a break
Post by: Tikotiko on July 25, 2020, 11:33:59 AM

https://youtu.be/TZYydf0-jao

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Title: Re: I just cannot catch a break
Post by: Tikotiko on July 25, 2020, 11:34:42 AM

This video is how it runs out of the water but in the water under load it is not the same.

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Title: I just cannot catch a break
Post by: midwestjet on July 25, 2020, 11:44:28 AM

Does it black smoke at idle as soon as it’s in the water under a load? Does the distributor have vacuum advance? If it does unhook it and re check timing. My guess would be that it’s at a different angle in the water and you have a float set too high and it’s dripping from the boosters while at idle on the water. I would get it in the water and double check carb float levels and reset idle speed and mixture on the water


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Title: Re: I just cannot catch a break
Post by: Tikotiko on July 25, 2020, 12:45:46 PM

Quote from: midwestjet on July 25, 2020, 11:44:28 AM

Does it black smoke at idle as soon as it’s in the water under a load? Does the distributor have vacuum advance? If it does unhook it and re check timing. My guess would be that it’s at a different angle in the water and you have a float set too high and it’s dripping from the boosters while at idle on the water. I would get it in the water and double check carb float levels and reset idle speed and mixture on the water


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Great idea

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Title: Re: I just cannot catch a break
Post by: angermgmt on July 25, 2020, 02:05:58 PM

Also have you checked your idle mixture screws with a vacuum gauge?


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Title: Re: I just cannot catch a break
Post by: Tikotiko on July 25, 2020, 04:10:36 PM

Quote from: angermgmt on July 25, 2020, 02:05:58 PM

Also have you checked your idle mixture screws with a vacuum gauge?


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I ordered a vacuum gauge today it will be here Tuesday

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Title: Re: I just cannot catch a break
Post by: angermgmt on July 25, 2020, 04:14:54 PM

Good call. I actually installed one on the dash matching my gauges. Tuning two carbs is a bit harder.


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Title: Re: I just cannot catch a break
Post by: Tikotiko on July 25, 2020, 04:42:12 PM

Quote from: angermgmt on July 25, 2020, 04:14:54 PM

Good call. I actually installed one on the dash matching my gauges. Tuning two carbs is a bit harder.


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I bet

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