Sticky valves??
Thread Starter
|
Senior User
Joined: Oct 2010
Posts: 123
Likes: 0
From: coleharbor
Sticky valves??
Hey guys, I got my injectors from rosewood diesel the other week and put them in. Before I put these in I had almost no blowby. It had a miss before I took the injectors out because that's what the shop computer told me to do. So te injectors work great of course. No problems there but the pickup does have 244 thousand on it now. And it now have excessive blowby and a miss but only SOMEtimes. The other day it had a miss the whole time it ran. This morning it ran on all 8 and quite smoothly actually. So Im sure someday I'll do a rebuild but for now, what could be the problems? Bad valves? Bad hydraulic lifters? It does seem to have one hard knock in one of the cylinders. But when it runs on all 8 it's barely even there? I am going to put on new ipc sensor and Cam position sensor and see what that does. She's old and probably about wore out. But I have to start off small
Thread Starter
|
Senior User
Joined: Oct 2010
Posts: 123
Likes: 0
From: coleharbor
I'll do that thanks. And they are brand new actually. First thing I did. Then injectors and glow plugs. Put bes ICP sensor and CPS on and no changes. It will run on all 8 going down the highway but idling it will either miss or sometimes run fine! I'm just stumped on where to go next
Hotshot
Joined: Jan 2012
Posts: 11,132
Likes: 3
From: Southern West Virginia
I'll do that thanks. And they are brand new actually. First thing I did. Then injectors and glow plugs. Put bes ICP sensor and CPS on and no changes. It will run on all 8 going down the highway but idling it will either miss or sometimes run fine! I'm just stumped on where to go next
Thread Starter
|
Senior User
Joined: Oct 2010
Posts: 123
Likes: 0
From: coleharbor
New update, when I rev it, she comes back down and idles fine for a second or two then starts missing again
Trending Topics
PREMIUM SPONSOR
Joined: Sep 2003
Posts: 2,630
Likes: 217
From: North East Ohio
Do you have a chip in it? If so, remove it and see if anything changes.
Have you checked the torque on the injectors to make sure they are fully seated? If ANY take more than a very small turn then I would be a little concerned about that injector causing issues.
New UVCH & gaskets? From Ford or Parts store? Hopefully you say Ford, or IH.
Have you checked the torque on the injectors to make sure they are fully seated? If ANY take more than a very small turn then I would be a little concerned about that injector causing issues.
New UVCH & gaskets? From Ford or Parts store? Hopefully you say Ford, or IH.
__________________
'96 7.3 F-350 Reg Cab 4x4 - bought new.
'04 6.0 E-350 custom 4x4
'08 6.4 F-550 Reg Cab 6 spd 4x4
'17 6.7 F-250 KR ccsb 4x4
'96 7.3 F-350 Reg Cab 4x4 - bought new.
'04 6.0 E-350 custom 4x4
'08 6.4 F-550 Reg Cab 6 spd 4x4
'17 6.7 F-250 KR ccsb 4x4
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Thread Starter
|
Senior User
Joined: Oct 2010
Posts: 123
Likes: 0
From: coleharbor
I have a TS yes and I will remove it and see what happens. And the gaskets were off ebay. I'd have to look and see where I got them. And a new problem has come up, I start it cold like today, about 20 degrees, runs great on all 8. But when it warms up, it misses. Then I shut it off and start it back up, it still misses but as soon as I start it, it idles very odd like sort of revs up and down and just doesn't sound good to the ear. But also when it did start and idle fine, the Loud knock I was hearing was gone. Could the IDM be causin this?
Postmaster
Joined: Mar 2004
Posts: 3,897
Likes: 8
Do you have a chip in it? If so, remove it and see if anything changes. Have you checked the torque on the injectors to make sure they are fully seated? If ANY take more than a very small turn then I would be a little concerned about that injector causing issues. New UVCH & gaskets? From Ford or Parts store? Hopefully you say Ford, or IH.
Postmaster
Joined: Mar 2004
Posts: 3,897
Likes: 8
The same concept of hot oil vs. cold oil can be applied to the injector orings.
Hotshot
Joined: Dec 2005
Posts: 14,375
Likes: 604
From: evansville in
Yep.
I'm just thinking one injector oring set may not be leaking enough for so much result.
The IPR is common and it doesn't sound like he has had it out.pulling it to check is a free test and very definitive.
It may be an inj seal I just am saying some other possibilities
I'm just thinking one injector oring set may not be leaking enough for so much result.
The IPR is common and it doesn't sound like he has had it out.pulling it to check is a free test and very definitive.
It may be an inj seal I just am saying some other possibilities
Hotshot
Joined: Dec 2005
Posts: 14,375
Likes: 604
From: evansville in
If you can monitor parameters look when on a hard pull at ICP and duty cycle and see if the pump is keeping up. I doubt it is honestly and when you are swapping out a t500 replace those IPR o-rings