One of the first things I recommend is the EBP tube and EBPS. Thats Exhaust Back Pressure tube and Exhaust Back Pressure Sensor. The EBP tube connects the passenger side manifold to the EBPS on the front of the motor. The EBPS gets readings from the manifold, and relays the information to the truck's computer. The truck then takes this information and uses it to control many different things, all of which are not fully understood.
The EBP system is one of the least understood systems on a 7.3L because there is insufficient documentation regarding it in Ford service manuals. However, it is speculated that the EBP system is partially responsible for fueling tables. This is made evident by the increase in MPG after a clogged tube is cleaned, or bad sensor replaced. However, some people delete the EBPS entirely and never see a fall in MPGs. Inversely, some people clean an EBP tube that was 100% occluded, and wont see an MPG gain. Its a total toss up to whether or not your EBP system will make a difference.
However, there are numerous recorded cases where someone DID get a boost in MPG after cleaning the EBP tube and sensor. Because this process is free, it is the first thing I recommend to people when looking for some lost MPGs.
It should be noted that there are no known direct links between the EBPS and the EBPV (Exhaust Back Pressure Valve). However, to add to the confusion, there are a few known instances where a bad EBPS did make the EBPV act weird.
So really, who knows. Its worth a shot to clean in the hope of regaining some MPGs. Below is the how to video on it.
Good job. That will be my next little job on days off. Thanks bud.
ReplyDeleteOh yeah! My husband is completely obsessed with all things mechanical, powerstroke parts, and his bike. I'm bookmarking this site for him and I'll let him bliss out... but only AFTER dinner. HA!
ReplyDeleteI second the "next little job on my day off" .Great video. Thanks!
ReplyDeleteI just cleaned both the EBPS and tubing today and did have a noticable increase in throttle response from idle. I spent a week looking at you tube videos and various forum posts. Since it was a free fix with a potential benefit, I gave it a shot. The video on this site is very helpful. Confirmed by other videos and posts that followed same procedure.
ReplyDeleteAnyone who hasn't done this maintenance, should give it a shot.
Here's another little tip for the 1st cleaning of the tube. Using a small pipe cutter, cut the tube 1 1/4" from the flange on both ends and replace the metal with heavy, 5/16" (ID) hose. Makes future cleaning a breeze. I say "future" because I've done this three times in 160,000 miles. If you don't make this regular maintenance you'll be replacing 60-90 dollar tube each time because it's impossible to remove all the carbon b/u and "kinking" the tube is more than possible at the manifold.
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