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Carbs and Fuel System
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post #1 of 15 (permalink) Old 08-15-2011, 07:02 PM Thread Starter
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seafoam

so i bought a can of seafoam and was wondering how much to use? i cleaned out my gas tank as much as i could for all the big rust pieces to come off the inside. alot of rust came off and is now out. the question now is how much seafoam per tank of gas should i put in? thanks!
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post #2 of 15 (permalink) Old 08-15-2011, 07:18 PM
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Quote:
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so i bought a can of seafoam and was wondering how much to use? i cleaned out my gas tank as much as i could for all the big rust pieces to come off the inside. alot of rust came off and is now out. the question now is how much seafoam per tank of gas should i put in? thanks!
Not an expert, but others have mention ined post #2 and #6 https://www.vn750.com/forum/showthread.php?t=18210
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post #3 of 15 (permalink) Old 08-15-2011, 07:50 PM
If only it had 6th gear..
 
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It says on the bottle. I think it was around 1 oz. per gallon.
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post #4 of 15 (permalink) Old 08-15-2011, 09:34 PM
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About every third tank I use 4 oz. just to maintain. No problems so far.
I am in the process of derusting the tank of a honda cb 125. I am using E Vap O Rust which I got a Harbor Freight.
So far I am impressed with the results, but I need more to completely fill the tank. I bought a bag of nuts to swish around on the inside to polish off the residual with a little friction.
It seems much safer than the acid method and appears to be kicking butt so far! There are no toxins or caustics involved so the kids and dogs need not be poisoned or burned. Or more likely me.
Anyway, unless you are satisfied that all the rust is out of the tank, the sea foam is of no use for rust, either in the tank or the lines or carbs.
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post #5 of 15 (permalink) Old 08-15-2011, 10:52 PM
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I use a capfull every fill up. Never had to have my carbs professionally cleaned.

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post #6 of 15 (permalink) Old 08-16-2011, 12:11 AM
If only it had 6th gear..
 
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I like it too. I didn't find Seafoam locally until this season. Do you guys use it in the crank case too? I put a little in, around 2 oz. recently as I'll be doing another oil change fairly soon. I think I would only do that when I'm planning on an oil change although the can says you can run a small amount in there all the time. I'm more conforable with just oil in there though.
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post #7 of 15 (permalink) Old 08-16-2011, 12:08 PM
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post #8 of 15 (permalink) Old 08-16-2011, 12:14 PM
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I can't find it now, but I think I saw someone comment very recently saying you shouldn't use Seafoam if you have rust in your tank.

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post #9 of 15 (permalink) Old 08-16-2011, 12:58 PM
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post #10 of 15 (permalink) Old 08-16-2011, 01:06 PM
If only it had 6th gear..
 
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Quote:
Originally Posted by FlacoLove View Post
Absolutely not! Think about it... Seafoam, or any other gas treatment, has disintegrating properties that loosen gunk, rust, pigeon chit, etc.. Imagine where this looseness goes? if and when these particles seep through the petcock screen, it finds itself traveling through the tiny ports of the petcock, (screwing that up) through the fuel lines and into the float bowl chamber. If it doesn't get stuck on the float valve needle port/jet (causing stuck float issues; not stopping fuel from entering a full bowl [floading]), then it has to pass through micro-sized jets which may block fuel entry for proper idling and/or mid to high speed traval.
Absolutely correct FlacoLove. In a questionable tank on a bike that seems to run decent, better to let the sleeping demons inside it stay alseep. But then in off season the tank should be cleaned and renewed of course.
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