EBP manifold fitting clogged? - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 5 (permalink) Old 10-25-2012, 07:39 AM Thread Starter
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EBP manifold fitting clogged?

'95 F250 4x4 ZF5, 170,000 (?) miles. Last couple winters we've had the stoopid EBPV close too vigorously on us. Finally getting around to the sensor tube thing. Pulled the sensor and disconnected the tube at the manifold, and the tube is running clear with compressed air. But it still doesn't blow down to the tailpipe.

I stuck a screwdriver into the fitting in the manifold after removing the tube, and it goes in a short ways and stops. Soot on the tip. Am I right in assuming, just from looking at the location, that I should be able to plunge a small screwdriver all the way into that fitting, that it should be a straight-shot opening right into the manifold? Well, it's not. So I think that's where the restriction is. I looked on guzzle's page on the EBP sensor/tube, but there's nothing about the flow in the fitting or the manifold.

Is it safe to stick a drill bit in there and try to free it up?

Yeah, I know, I could just wire the valve open. One day maybe. For now, I'd like to get it working right.
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post #2 of 5 (permalink) Old 10-25-2012, 12:34 PM
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Re: EBP manifold fitting clogged?

Use anything that will open the hole up. Same with the sensor and blow air through the line and make sure its clear

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post #3 of 5 (permalink) Old 10-25-2012, 12:56 PM
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Re: EBP manifold fitting clogged?

I took the fitting out of the manifold(heated with torch) then I was able to see what I was looking at. The hole is quite small IIRC

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post #4 of 5 (permalink) Old 10-25-2012, 01:53 PM
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Re: EBP manifold fitting clogged?

A piece of welding wire works well for opening up the hole. You can put the wire in the end of a drill bit and do it that way. Also a little bit of pb blaster or the like works well at helping to loosen up the soot.

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post #5 of 5 (permalink) Old 10-25-2012, 03:34 PM Thread Starter
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Re: EBP manifold fitting clogged?

Got it clear. Some PB loosened it up, and I broke through with a small drill bit, then a small screwdriver. I def. hear a little air in the tailpipe when I pump air down the tube. Duh, forgot to check the end of the sensor, but that's easy enough to re-do. That tube nut going into the manifold was sure a PITA to reach, esp when your only option is an open-end or line wrench.

And that soot's tenacious. 100 psi through the tube from above didn't do jack.
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