Drip from front of engine - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 01-24-2020, 08:17 AM Thread Starter
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Drip from front of engine

Recently I noticed a puddle on the ground at the front passenger side of my 1999 7.3 Powerstroke. There's what seems to be an overflow pipe of some kind dripping. There's two hard lines running down the front of the block on the passenger side. One runs all the way down to the oil pan, the other (where the drip is) extends about 4" and is open at the end. It appears to be clear (water?) but it's hard to tell by smell because the drips run off the front of the dirty engine. What is this?

Well, this is a bit frustrating.... I can't upload the video I took because of this: "Your submission could not be processed because a security token was missing."), and I can't add the YOUTUBE link because I only have a post count of 7. GRRRRRRRRR!
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Last edited by lotekinc; 01-24-2020 at 08:23 AM.
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post #2 of 8 Old 01-24-2020, 08:22 AM
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That tube comes from the Water Drain from the Fuel Filter Housing (open it by sliding the Yellow Lever at the back of the housing). Now, here's what is probably wrong. The O-rings on that valve are leaking. It's an easy fix though

Welcome to guzzle's PSD Fuel Filter Drain Valve Repair Web Page
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post #3 of 8 Old 01-24-2020, 08:34 AM Thread Starter
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[quote=NoRalPh;16376915]That tube comes from the Water Drain from the Fuel Filter Housing (open it by sliding the Yellow Lever at the back of the housing). Now, here's what is probably wrong. The O-rings on that valve are leaking. It's an easy fix though



Thanks! Wow, so is it normal to have that much water in the filter housing? I recently changed the fuel filter. I guess that is suspect. I'm wondering if I just didn't close the valve all the way <shrug>
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post #4 of 8 Old 01-24-2020, 08:43 AM
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[quote=lotekinc;16376921]
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Originally Posted by NoRalPh View Post
That tube comes from the Water Drain from the Fuel Filter Housing (open it by sliding the Yellow Lever at the back of the housing). Now, here's what is probably wrong. The O-rings on that valve are leaking. It's an easy fix though



Thanks! Wow, so is it normal to have that much water in the filter housing? I recently changed the fuel filter. I guess that is suspect. I'm wondering if I just didn't close the valve all the way <shrug>
There is some confusion here. The tube dripping water is from the AC it drips when being used to drain excess water it usually leaves quite a big puddle and can surprise many folks. The other one is the drain tube from the back of the fuel filter housing. There are two different tubes here etc. Its rare to have much if any water in the fuel filter housing so I doubt you have any etc. The o rings on the fuel bowl drain valve are almost always a when not if in terms of dripping. Im betting the valve is already closed all the way but the o rings are failing is all. Takes 10 minutes if you take your time to clean etc. I would also unplug the fuel bowl heater cord on the back just by the drain valve. The fuel bowl heater is pretty much worthless and when it fails it kills power to the ecm causing no start issues etc. Another super common item etc. I see -25 winters and have not had the fuel bowl heater plugged in, in years with zero issues.

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post #5 of 8 Old 01-24-2020, 08:50 AM Thread Starter
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[quote=JustinOOO9;16376923]
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Originally Posted by lotekinc View Post

There is some confusion here. The tube dripping water is from the AC it drips when being used to drain excess water it usually leaves quite a big puddle and can surprise many folks. The other one is the drain tube from the back of the fuel filter housing. There are two different tubes here etc. Its rare to have much if any water in the fuel filter housing so I doubt you have any etc. The o rings on the fuel bowl drain valve are almost always a when not if in terms of dripping. Im betting the valve is already closed all the way but the o rings are failing is all. Takes 10 minutes if you take your time to clean etc. I would also unplug the fuel bowl heater cord on the back just by the drain valve. The fuel bowl heater is pretty much worthless and when it fails it kills power to the ecm causing no start issues etc. Another super common item etc. I see -25 winters and have not had the fuel bowl heater plugged in, in years with zero issues.
So, where is the end of the bowl drain tube? The one dripping is short and ends about 4" from the top of the engine. I can't see where the other tube terminates.
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post #6 of 8 Old 01-24-2020, 08:56 AM
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[quote=lotekinc;16376927]
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Originally Posted by JustinOOO9 View Post

So, where is the end of the bowl drain tube? The one dripping is short and ends about 4" from the top of the engine. I can't see where the other tube terminates.
I can't remember, id have to check my truck when I get home. I say the above though because a puddle of diesel would be way different than water. You mentioned not being able to tell if its water vs diesel. It would be very obvious by feel/quick taste/smell etc. Personally I would fix the fuel drain valve o rings first and then run the truck without the AC to see if the puddle stops etc. Also there is a fuel pressure regulator on the drivers side of the fuel bowl. Mine was leaking something fierce and kept making me try to find the source of leaks in other places because it puddles and ran down the engine. In all honest it took me 3 hrs to reseal the whole fuel bowl and the fuel line rubbers. I didn't have access to my usual set of tools but I was getting a diesel smell when just driving around so wanted to take care of it asap. Both the link the noralph posted and riffraff diesel performance sell great quality o ring kits and you can call either to see what you need exactly. Just my opinions on the fuel bowl of course.

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post #7 of 8 Old 01-24-2020, 11:36 AM
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Edit: someone gave my answer already.

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post #8 of 8 Old 01-24-2020, 12:45 PM
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The fuel bowl drain tube is near the front of the engine. You should be able to see it through the front passenger wheel well. The A/C line is closer to the passenger compartment below the condenser unit in the cab.

Reach into the dripping tube and get some of the liquid on your finger or a cloth / paper towel. If it is the FBD tube, it should smell like fuel. As @NoRalPh stated, if the O-rings on the drain valve (yellow handle) are leaking, it won't necessarily be water draining.


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