Seafoam in a 7.3 - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 02-03-2014, 03:13 PM Thread Starter
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Seafoam in a 7.3

Before I jump and start doing things, is it okay to put seafoam in a vacuum line? I want to throw a can in vacuum and a can of trans tune in transmission. Thanks!

2001 F250 ECLB 7.3 PSD 219,000 miles
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post #2 of 11 Old 02-03-2014, 05:26 PM
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Ive never had of putting it in a vacuum line on a diesel... but ive hadgood luck with it in tank with my 7.3

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post #3 of 11 Old 02-03-2014, 06:18 PM
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Why would you put it in the vac system? The vac system isn't connected to the engine in any meaningful way that needs "flushing".
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post #4 of 11 Old 02-03-2014, 07:24 PM
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Yeah theres no vacuum line to put it in.

And I've read its a big no-no to put it in our oil.

My fuel system definitely likes it though

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post #5 of 11 Old 02-03-2014, 09:09 PM Thread Starter
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Yeah I just popped my hood and realized that, I guess I have been spending too much time with my ranger lately haha. I did splash a little in the fuel bowl, though.

2001 F250 ECLB 7.3 PSD 219,000 miles
S&B Intake
Flo-Pro 5" SS Exhaust
ISSPRO EV2 Boost, Pyro, Trans
David Lott Tunes
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post #6 of 11 Old 02-03-2014, 09:29 PM
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i read that a lot of guys drain the fuel bowl and fill with seafoam and then put the rest in the tank. the truck ran scary smooth and quiet for a while after i did this.
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post #7 of 11 Old 02-04-2014, 07:48 PM Thread Starter
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Yeah I heard transmission fluid will also smooth out the idle, a quart in a tank.

2001 F250 ECLB 7.3 PSD 219,000 miles
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Flo-Pro 5" SS Exhaust
ISSPRO EV2 Boost, Pyro, Trans
David Lott Tunes
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post #8 of 11 Old 02-16-2014, 06:00 PM
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Quote:
Originally Posted by steve604 View Post
i read that a lot of guys drain the fuel bowl and fill with seafoam and then put the rest in the tank. the truck ran scary smooth and quiet for a while after i did this.

That's what I do


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post #9 of 11 Old 02-16-2014, 06:29 PM
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Food for Thought

The stuff is about 20% Isopropyl Alcohol. I know there are other additives but the alcohol is what cleans everything. Not a problem in a gasser but we need fuel (and it's additives) to lube the injectors.

Most likely the short time of running it (if you fill your bowl), it probably won't hurt anything though.

Just posting this for some food for thought.

Here's the MSDS: http://seafoamsales.com/wp-content/u...seafoam_EN.pdf

08 6.4 CCSB FX4
6 inches of lift
ARP studs
Built transmission
PMF trac bars and three links up front
Typical power mods
Mishimoto intercooler
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205/100s
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post #10 of 11 Old 02-16-2014, 07:38 PM
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I'm thinking that the fuel side of the heui injector isn't all that fragile. The oil side of it is the part where the problems happen.

A common rail injector is a different story.
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