EBPV sticking?
#1
EBPV sticking?
New to the turbo diesels, have a few symptoms/questions:
I know the valve is designed to close up in cold weather to aid in engine warm up, etc..
At first the noise freaked me out, as this is my first winter owning a diesel. Figured out its ok, blah blah... but then i noticed a few times recently (even though its been quite warm this winter) that after a bit of block heater action and then warm up with the engine running, I went to go driving and had no boost pressure, really no acceleration (i swear it took 5 minutes to reach 10mph). The temp gauge was pointing around the C mark, so its not like it was terribly cold still, and outside temps were maybe the high 20's. I looked down whrre the EBPV is and seems like a lot of fresh lookin oil under the exhaust turbo, I'm wondering if there is a leak in the pedestal, or if the solenoid or wiring is bad, or carbon build up in the exhaust boot where the turbo meets the downpipe. Or if i'm an idiot and I'm explaining it wrong.
Another thing is, even though it is warm out, the truck is at full engine warmth, my exhaust sounds very raspy and "airy" I guess you would say without the typical diesel rumble. Feels like a loss of power.
any direction you can point me to check on things would help
Travis
I know the valve is designed to close up in cold weather to aid in engine warm up, etc..
At first the noise freaked me out, as this is my first winter owning a diesel. Figured out its ok, blah blah... but then i noticed a few times recently (even though its been quite warm this winter) that after a bit of block heater action and then warm up with the engine running, I went to go driving and had no boost pressure, really no acceleration (i swear it took 5 minutes to reach 10mph). The temp gauge was pointing around the C mark, so its not like it was terribly cold still, and outside temps were maybe the high 20's. I looked down whrre the EBPV is and seems like a lot of fresh lookin oil under the exhaust turbo, I'm wondering if there is a leak in the pedestal, or if the solenoid or wiring is bad, or carbon build up in the exhaust boot where the turbo meets the downpipe. Or if i'm an idiot and I'm explaining it wrong.
Another thing is, even though it is warm out, the truck is at full engine warmth, my exhaust sounds very raspy and "airy" I guess you would say without the typical diesel rumble. Feels like a loss of power.
any direction you can point me to check on things would help
Travis
#2
#3
The tube as in the downpipe coming out of the exhaust turbo? I'm assuming some carbon build up may occur there or around where that butterfly valve is for the EBPV
#4
no... the Exhaust Back Pressure sensor. this sits at the front of the engine, pretty much on top of the water pump. then there is a small tube, appx. 1/4" dia. it goes from the front end of the passenger side exhaust manifold to the sensor. you can see the line thru the passenger fender well. remove the sensor and take a air nozzle and bloe down the line and blow all the soot out into the manifold, or you can remove the line and take a piece of string trimmer line and some brake clean and clean the inside of the line. then take the line and poke it thru into the manifold to clear any soot build up in there. don't use brake clean on that. now it is common for these lines to break. when you slean the sensor, use a piece of trimmer line and carefully scrape the inside of the sensor. it is a diaphram so if you poke thru it then you need a new sensor. if you do need either of these parts, Riffraff Diesel Performance Parts | Ford 7.3 diesel | 7.3 powerstroke | Ford Powerstroke | 7.3L Powerstroke Parts has them. as far as the oil goes, it could be the pedistol O- rings going out, or the EBP cylinder could be leaking. that is common too.
The following users liked this post:
airblaster33 (02-20-2012)
#5
no... the Exhaust Back Pressure sensor. this sits at the front of the engine, pretty much on top of the water pump. then there is a small tube, appx. 1/4" dia. it goes from the front end of the passenger side exhaust manifold to the sensor. you can see the line thru the passenger fender well. remove the sensor and take a air nozzle and bloe down the line and blow all the soot out into the manifold, or you can remove the line and take a piece of string trimmer line and some brake clean and clean the inside of the line. then take the line and poke it thru into the manifold to clear any soot build up in there. don't use brake clean on that. now it is common for these lines to break. when you slean the sensor, use a piece of trimmer line and carefully scrape the inside of the sensor. it is a diaphram so if you poke thru it then you need a new sensor. if you do need either of these parts, Riffraff Diesel Performance Parts | Ford 7.3 diesel | 7.3 powerstroke | Ford Powerstroke | 7.3L Powerstroke Parts has them. as far as the oil goes, it could be the pedistol O- rings going out, or the EBP cylinder could be leaking. that is common too.
Oh, ok. Sorry for the newbie status, I don't have much experience with turbos/diesels and related parts. Much help though! Could be the EBPV leaking oil out of the piston o ring (someone had told me its a butterfly valve, I dont know..) is what riffraff says on their site. eek sounds like it may be a little over my head rebuilding that, but I'll try unclogging with your advice, and I will get back with info if that is the problem. Thank god i have about 10,000 feet in trimmer line
#6
here is how the EBPV works, it's a electric celinoid, oil actuated. the "ram is part of the turbo pedistol. then the "ram" has a linkage that goes to the butterfly valve. so when the PCM sends power to the celinoid, it opens up an then it closes the valve. so yes, there is a butterfly valve.
The following users liked this post:
airblaster33 (02-20-2012)
#7
here is how the EBPV works, it's a electric celinoid, oil actuated. the "ram is part of the turbo pedistol. then the "ram" has a linkage that goes to the butterfly valve. so when the PCM sends power to the celinoid, it opens up an then it closes the valve. so yes, there is a butterfly valve.
Ford said the noise is normal, which I understand most of thats the EBPV, but you would think they would actually open the hood and use their eyes to see the oil... thanks man much appreciated
#9
yeah that was the original motive for going there, some speed control somethin or other.. i figured i gotta leave it overnight, can they start it up cold, let it run and check it after its warm... ek
#10
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