Pull the heads to get to the lifters?
#1
Pull the heads to get to the lifters?
Do I have to pull the heads off to get to the lifters?
The more I read, the more I suspect that I have a bent pushrod. And if that's the case, maybe a bad lifter. I'm going to pop the valve covers off soon and do a compression check to identify the bad cylinder(s). Once I find a bad one, I'll pull the push rods out. But is it possible to change the lifters without pulling the heads?
-Matt
The more I read, the more I suspect that I have a bent pushrod. And if that's the case, maybe a bad lifter. I'm going to pop the valve covers off soon and do a compression check to identify the bad cylinder(s). Once I find a bad one, I'll pull the push rods out. But is it possible to change the lifters without pulling the heads?
-Matt
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Sounds like injector o-rings to me. Have you checked the fuel filter? Is it all black or does the fuel in the bowl have a dark color to it?
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#8
I don't think it's the o-rings. The injectors are new Rosewood Stage-1s that I put in a couple of months ago and symptoms persist. There is no oil in the fuel bowl. Plus, it's missing through the entire band.
Symptoms:
Misfires, won't rev above 2k ish, doesn't build much boost, blows white smoke when you get on it hard. There is no performance chip on this truck.
I've replaced:
All 8 injectors with Rosewood Stage-1
CPS with a new Ford dark gray
I've unplugged the following one at a time, with little to no difference:
EBPV (still unplugged)
ICP
EBP Sensor
MAP Sensor
I've checked the fuel pressure, 50-60 at idle and WOT
I bought Torque Pro for my Android, and this is what I'm seeing while driving. The low value is at idle, the high value is a never-exceeds value at WOT
IPR Duty Cycle 14-35%
HPOP Pressure (Confirmed with gauge) 650-2300psi
Injector Pulsewidth 1.1-1.7 ns
EBP 14.5-21
MAP 14.5-20
Boost (Confirmed with gauge) 0-5 psi
Torque Pro says there's no codes.
All of the common-to-injector pin (2 to 3 and 3 to 4) resistance measurements are dead-on 3.5 ohm.
Logic says that it's not building boost because it's not building EBP because it's not getting enough fuel. However, I am definitely getting white smoke and a misfire when I romp on it, which leads me to believe that the injectors are firing at the wrong time. I replaced the CPS with a new Ford unit and there was no difference.
All I have left is to do a compression test, IDM, and maybe the barometric pressure sensor.
I really want to slap another IDM on there and see what happens. AE would be awesome too, so that I can check Barometric Pressure, TPS (Although not likely the issue), buzz test, CCT, etc.
Symptoms:
Misfires, won't rev above 2k ish, doesn't build much boost, blows white smoke when you get on it hard. There is no performance chip on this truck.
I've replaced:
All 8 injectors with Rosewood Stage-1
CPS with a new Ford dark gray
I've unplugged the following one at a time, with little to no difference:
EBPV (still unplugged)
ICP
EBP Sensor
MAP Sensor
I've checked the fuel pressure, 50-60 at idle and WOT
I bought Torque Pro for my Android, and this is what I'm seeing while driving. The low value is at idle, the high value is a never-exceeds value at WOT
IPR Duty Cycle 14-35%
HPOP Pressure (Confirmed with gauge) 650-2300psi
Injector Pulsewidth 1.1-1.7 ns
EBP 14.5-21
MAP 14.5-20
Boost (Confirmed with gauge) 0-5 psi
Torque Pro says there's no codes.
All of the common-to-injector pin (2 to 3 and 3 to 4) resistance measurements are dead-on 3.5 ohm.
Logic says that it's not building boost because it's not building EBP because it's not getting enough fuel. However, I am definitely getting white smoke and a misfire when I romp on it, which leads me to believe that the injectors are firing at the wrong time. I replaced the CPS with a new Ford unit and there was no difference.
All I have left is to do a compression test, IDM, and maybe the barometric pressure sensor.
I really want to slap another IDM on there and see what happens. AE would be awesome too, so that I can check Barometric Pressure, TPS (Although not likely the issue), buzz test, CCT, etc.
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#12
You can replace the pig tails and wrap up the soldered connections so well that you can't tell you ever did anything. If 2 (or more) injector wires are crossed it wouldn't show up on an ohm meter. I'd place a small bet that's your problem.
I hope Jim (Hussler) checks this thread out. He has a list of the original wire colors to each injector. You'd have to open each loom and go back to the original wiring to know if they are hooked up correctly. That reminds me, you can tell if the pigtails have been replaced if any of the injector power wire colors are repeated at the plugs.
I hope Jim (Hussler) checks this thread out. He has a list of the original wire colors to each injector. You'd have to open each loom and go back to the original wiring to know if they are hooked up correctly. That reminds me, you can tell if the pigtails have been replaced if any of the injector power wire colors are repeated at the plugs.
#13
You can replace the pig tails and wrap up the soldered connections so well that you can't tell you ever did anything. If 2 (or more) injector wires are crossed it wouldn't show up on an ohm meter. I'd place a small bet that's your problem.
I hope Jim (Hussler) checks this thread out. He has a list of the original wire colors to each injector. You'd have to open each loom and go back to the original wiring to know if they are hooked up correctly. That reminds me, you can tell if the pigtails have been replaced if any of the injector power wire colors are repeated at the plugs.
I hope Jim (Hussler) checks this thread out. He has a list of the original wire colors to each injector. You'd have to open each loom and go back to the original wiring to know if they are hooked up correctly. That reminds me, you can tell if the pigtails have been replaced if any of the injector power wire colors are repeated at the plugs.
https://www.ford-trucks.com/forums/a...1&d=1314836746
It wouldn't be a terrible idea to pull the connector off the IDM and ohm all the way through the wiring from the injector plug to the IDM connector.
#14