Could be a clogged tube.. yul just need to inspect everything as dp said.
No apologies needed. This is how we (you) learn about stuff.
One of the Perks of being a member here ??
EBPV question
- Thread starter DieselDo
- Start date
Could be a clogged tube.. yul just need to inspect everything as dp said.
No apologies needed. This is how we (you) learn about stuff.
One of the Perks of being a member here ??
DieselDo
SDD Junior Member
update:
It was a slow day at work, so I went over to a friend of mine place to check my intake piping. after pressurizing the intake piping from the inlet to the turbo compressor, we found and heard no leaks.
Any thoughts?
Definately a perk big Joe.
It was a slow day at work, so I went over to a friend of mine place to check my intake piping. after pressurizing the intake piping from the inlet to the turbo compressor, we found and heard no leaks.
Any thoughts?
Definately a perk big Joe.
Dieselpwrdredneck
Addicted2Diesel
try unplugging it and see what happens. plug is up there by the fuel bowl 2 wires. I cant recall you might get a check engine light?
Yep.. Try that.
When you pressurized the Intake piping.. did it hold a steady static pressure ??
Joe
OBTW.. Do you have a Boost and EGT guage installed ?
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DieselDo
SDD Junior Member
Unplug what, the the valve at the pedestal or the ebp sensor on the front of the engine?
It did hold a static pressure, I don't remember what we pressurized it to though, I think it was like 15 PSI or so.
No, no E.G.T. or boost gauges....yet. That's a planned add on sometime in the future after fuel bowl rebuild, body work, brakes and tires.
It did hold a static pressure, I don't remember what we pressurized it to though, I think it was like 15 PSI or so.
No, no E.G.T. or boost gauges....yet. That's a planned add on sometime in the future after fuel bowl rebuild, body work, brakes and tires.
With the erratic performance yer feeling, with no Boost gauge to show turbo pessures... yer best bet at this point would be to have yer 7.3 Scanned.. for any codes. So you can define whats going on, and work on some specifics ?
We're just stabbing around at this point ?
Joe
DieselDo
SDD Junior Member
Yes, red line is still hooked up.
I'll have the computer scanner for codes this weekend, try to get a boost reading, and retest at 25 PSI.
would a 0 - 30 psi acetylene gauge work for testing boost until I pick up a real one?
What kind of pressures should I expect?
Thanks for your time and input, it's much apperciated.
I'll have the computer scanner for codes this weekend, try to get a boost reading, and retest at 25 PSI.
would a 0 - 30 psi acetylene gauge work for testing boost until I pick up a real one?
What kind of pressures should I expect?
Thanks for your time and input, it's much apperciated.
Yes, red line is still hooked up.
***
I'll have the computer scanner for codes this weekend, try to get a boost reading, and retest at 25 PSI.
***
would a 0 - 30 psi acetylene gauge work for testing boost until I pick up a real one?
***Should work,.
What kind of pressures should I expect?
***At idle, no load.. 0.
In gear, normal acceleration: 3-5+ lbs.
At (say) 65mph, level ground: 3-5 lbs.
At speed, putting heavy throttle demand on: +/- 20 lbs.
ALL readings should be Smooth & Steady.. NO needle Bounce.
Thanks for your time and input, it's much apperciated.
No Problem We love this stuff.
Joe
On edit: You might also check the 2 boots and 4 clamps under the Y pipe that connect to each head intake plenums... are in good shape and tight (all yer boots/clamps are @ 230,000 miles & 14 years old ?)
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DieselDo
SDD Junior Member
A partial update:
scanned the computer with my cheapo scanner as well as one used by ford tech's, both came back with NO codes.
Haven't been able to get to pressure test the intake piping at 20 psi or get a boost reading yet. Found a good place to test boost though, A toll booth up 300 feet in a mile and a quarter, coasting at 30 push back up to 65.
will report back when I have the info.
btw: the boots may have been replaced, the P.O. had some work done when the water pump started to go. I just recently inherrited this truck and finding out it's quirks.
is it ok to test boost at the map sensor?
scanned the computer with my cheapo scanner as well as one used by ford tech's, both came back with NO codes.
Haven't been able to get to pressure test the intake piping at 20 psi or get a boost reading yet. Found a good place to test boost though, A toll booth up 300 feet in a mile and a quarter, coasting at 30 push back up to 65.
will report back when I have the info.
btw: the boots may have been replaced, the P.O. had some work done when the water pump started to go. I just recently inherrited this truck and finding out it's quirks.
is it ok to test boost at the map sensor?
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Has this 7.3 been mod'd at all by the PO ?
Yes.. you can T in on the line that runs from the intake Y.. to the MAP sensor. But the MAP data still needs to be communicated to the PCM.. T in, don't isolate the MAP sensor. (at this point ?)
Joe
Yes.. you can T in on the line that runs from the intake Y.. to the MAP sensor. But the MAP data still needs to be communicated to the PCM.. T in, don't isolate the MAP sensor. (at this point ?)
Joe
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