Check the basics STUPID!!
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still plays with trucks
Joined: Mar 2004
Posts: 1,743
Likes: 3
From: Twin Falls Idaho
sometimes my motto seems to be "think about it, there has to be a harder way!"
I think alot of times I tend to overthink the situation. "whats the worse thing that could happen" kinda deal
The high EGT's had all of us scratching our heads. That and no smoke! I think the injectors would only fill partially then squirt kinda, causing fuel to be where it wasn't needed or when it wasn't wanted.
today we made it to Sheridan, WY. lots of long grades at altitude. Ol Tom just loped along, 2500 RPM, 1050-1100 EGTS 17-20 PSI boost and 65 mph. I like my truck again
Sometimes. til the neighbor just rolled in with a beautiful International 4 door truck.
Thanks guys,
Barney
I think alot of times I tend to overthink the situation. "whats the worse thing that could happen" kinda deal
The high EGT's had all of us scratching our heads. That and no smoke! I think the injectors would only fill partially then squirt kinda, causing fuel to be where it wasn't needed or when it wasn't wanted.
today we made it to Sheridan, WY. lots of long grades at altitude. Ol Tom just loped along, 2500 RPM, 1050-1100 EGTS 17-20 PSI boost and 65 mph. I like my truck again
Sometimes. til the neighbor just rolled in with a beautiful International 4 door truck.
Thanks guys,
Barney
Laughing Gas
Joined: Nov 2010
Posts: 915
Likes: 1
From: oriental NC.
[QUOTE=Brother Les;10353081]Time for a learning moment guys/gals....... who has pictures of where and how they hooked up their fuel pressure gauges.
heres mine i agree that it is needed !! it was one of the first gauges on my truck because the computer cant see it. helped me fix a bad problem that every one was guessing at. with some guidance from here of course
the sender is post filter in the pic. rt side of truck.
heres mine i agree that it is needed !! it was one of the first gauges on my truck because the computer cant see it. helped me fix a bad problem that every one was guessing at. with some guidance from here of course
the sender is post filter in the pic. rt side of truck.
Lead Driver
Joined: Oct 2009
Posts: 5,406
Likes: 229
From: Pa
Please note this may not be correct, but this is how it was explained too me! (it makes sense, if you have ever leaned out a chainsaw or any gas motor)
Low fuel pressure causes a lean condition, which causes high egt's! I have a friend with a built cummins, stacked chips, built injectors, and bigger turbo, but he failed too get it more fuel. That resulted in horrendous EGT's (to the point he quit driving it), and started calling the tuner company. They eventually told him too put an airdog(?) fuel system on. Now that truck is an animal, and the EGT's only get outta hand when on the highest tune and beatin the hell out of it! (expected) Glad you got it figured out, I own a 6.0l, So I always misdiagnose for the worst, and usually it is somethin stupid (like a hole in the IC boot, and I thought i dropped the turbo)! Good Luck and keep on trucking!
Low fuel pressure causes a lean condition, which causes high egt's! I have a friend with a built cummins, stacked chips, built injectors, and bigger turbo, but he failed too get it more fuel. That resulted in horrendous EGT's (to the point he quit driving it), and started calling the tuner company. They eventually told him too put an airdog(?) fuel system on. Now that truck is an animal, and the EGT's only get outta hand when on the highest tune and beatin the hell out of it! (expected) Glad you got it figured out, I own a 6.0l, So I always misdiagnose for the worst, and usually it is somethin stupid (like a hole in the IC boot, and I thought i dropped the turbo)! Good Luck and keep on trucking!
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FTE Leadership Emeritus
Joined: Jan 2003
Posts: 161,999
Likes: 75
From: 3rd Rock
This was sent to me...should help
Might show him this video...
YouTube - Fuel pressure gauge...
And show him these pictures of the pick up tube...
If he has not done any in tank mods nows the time to delete that damn screen!!!
You should be able to just cut and past this PM if you want...
I went thru 3 fuel pumps before I figured this crap out!!! Pissed me off!
Might show him this video...
YouTube - Fuel pressure gauge...
And show him these pictures of the pick up tube...
If he has not done any in tank mods nows the time to delete that damn screen!!!
You should be able to just cut and past this PM if you want...
I went thru 3 fuel pumps before I figured this crap out!!! Pissed me off!
Post Fiend
Joined: Sep 2003
Posts: 6,096
Likes: 26
From: Mesa AZ
Please note this may not be correct, but this is how it was explained too me! (it makes sense, if you have ever leaned out a chainsaw or any gas motor)
Low fuel pressure causes a lean condition, which causes high egt's! I have a friend with a built cummins, stacked chips, built injectors, and bigger turbo, but he failed too get it more fuel. That resulted in horrendous EGT's (to the point he quit driving it), and started calling the tuner company. They eventually told him too put an airdog(?) fuel system on. Now that truck is an animal, and the EGT's only get outta hand when on the highest tune and beatin the hell out of it! (expected) Glad you got it figured out, I own a 6.0l, So I always misdiagnose for the worst, and usually it is somethin stupid (like a hole in the IC boot, and I thought i dropped the turbo)! Good Luck and keep on trucking!
Low fuel pressure causes a lean condition, which causes high egt's! I have a friend with a built cummins, stacked chips, built injectors, and bigger turbo, but he failed too get it more fuel. That resulted in horrendous EGT's (to the point he quit driving it), and started calling the tuner company. They eventually told him too put an airdog(?) fuel system on. Now that truck is an animal, and the EGT's only get outta hand when on the highest tune and beatin the hell out of it! (expected) Glad you got it figured out, I own a 6.0l, So I always misdiagnose for the worst, and usually it is somethin stupid (like a hole in the IC boot, and I thought i dropped the turbo)! Good Luck and keep on trucking!
I wasn't sure the same thing applied to diesels though.
From what I've learned so far, too rich will create high EGTs, which is opposite of gas engines. Don't the EGT's climb when you have a boost leak? If so, then perhaps we get high EGTs at both ends of the spectrum? Too lean or too rich?Looking at the video posted above, I don't see the EGTs getting out of hand...(but it's hard to see the needle with the angle of the camera)
Lead Driver
Joined: Oct 2009
Posts: 5,406
Likes: 229
From: Pa
I was taught the same thing as well regarding gas engines. Too lean of a mixture makes more heat. We used to dump a bunch of extra fuel into a gas engine when running nitrous because we had to keep stuff from melting.
I wasn't sure the same thing applied to diesels though. From what I've learned so far, too rich will create high EGTs, which is opposite of gas engines. Don't the EGT's climb when you have a boost leak? If so, then perhaps we get high EGTs at both ends of the spectrum? Too lean or too rich?
Looking at the video posted above, I don't see the EGTs getting out of hand...(but it's hard to see the needle with the angle of the camera)
I wasn't sure the same thing applied to diesels though.
From what I've learned so far, too rich will create high EGTs, which is opposite of gas engines. Don't the EGT's climb when you have a boost leak? If so, then perhaps we get high EGTs at both ends of the spectrum? Too lean or too rich?Looking at the video posted above, I don't see the EGTs getting out of hand...(but it's hard to see the needle with the angle of the camera)
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