head removal...
Hotshot
Joined: Oct 2003
Posts: 17,791
Likes: 99
From: Ashland City, TN
You didn't know that?
HPX fixes the oiling issues to cylinder 8.
at least this is my understanding of all of it.
The dreaded injector hiss is cylinder 8 as well.
HPX fixes the oiling issues to cylinder 8.
at least this is my understanding of all of it.
The dreaded injector hiss is cylinder 8 as well.
Hotshot
Joined: Oct 2003
Posts: 17,791
Likes: 99
From: Ashland City, TN
I've never heard that one.
Number 8 usually just gets the short end of the High Pressure Oil and doesn't fire as the efficiency of the other injectors.
The Crossover or Dual HPOPs alleviates this issue.
Now in the gassers, number 8 is weak also, but that has to do with something completely different.
Number 8 usually just gets the short end of the High Pressure Oil and doesn't fire as the efficiency of the other injectors.
The Crossover or Dual HPOPs alleviates this issue.
Now in the gassers, number 8 is weak also, but that has to do with something completely different.
Thread Starter
|
Senior User
Joined: Nov 2011
Posts: 326
Likes: 0
So what would cause low compression, white smoke and excessive carbon build up... All relates to #8 cylinder. Original symptom was severe white smoke. Unplug #8 injector smoke goes away. The ford dealership said it low compression but not abnormally low. I don't have the numbers.
Thread Starter
|
Senior User
Joined: Nov 2011
Posts: 326
Likes: 0
No I didn't... I tried and the glowplug broke, just now got time to pull the head. It has a ton of carbon all over the valves and piston... The glowplug hole is completely carbon filled.
Hotshot
Joined: Feb 2009
Posts: 10,408
Likes: 75
From: Plankinton, SD
If that cylinder wasn't firing properly, carbon buildup is going to be there. I'd pull the valves and clean them all up first. Then I'd turn the motor over by hand to get the piston to the top of the cylinder and clean it as good as you can being very careful not to damage the cylinder.
If you had low compression on that cylinder, I'd take the head to a machine shop and have them check the valves on that head close. They should be able to tell if you have a valve problem. Rotate the motor so the piston is all the way down in the cylinder too, see how the cylinder looks, as much of it as you can anyway.
If the head/valves check out, and you had low compression, the only thing left is broken rings, bad cylinder wear..
By the way, how did you do a compression check, with a broken glow plug in the head??
If you had low compression on that cylinder, I'd take the head to a machine shop and have them check the valves on that head close. They should be able to tell if you have a valve problem. Rotate the motor so the piston is all the way down in the cylinder too, see how the cylinder looks, as much of it as you can anyway.
If the head/valves check out, and you had low compression, the only thing left is broken rings, bad cylinder wear..
By the way, how did you do a compression check, with a broken glow plug in the head??
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
Post Fiend
Joined: Dec 2009
Posts: 15,505
Likes: 18
From: Livoina,La
Posting Guru
Joined: Nov 2011
Posts: 1,664
Likes: 4
From: Southern AZ
Correct me if I am wrong but....
If the bore is in good shape and the head comes back clean for crack/valve seating...
Couldn't you just re-ring that cylinder.... I have heard that large diesel techs do that all the time.
You'll have to cut and weld the cross member to drop the pan without pulling the engine but rumor has it that it's not a bad job.
Definitely have the head checked for cracks/valve seats first...
Richard
If the bore is in good shape and the head comes back clean for crack/valve seating...
Couldn't you just re-ring that cylinder.... I have heard that large diesel techs do that all the time.
You'll have to cut and weld the cross member to drop the pan without pulling the engine but rumor has it that it's not a bad job.
Definitely have the head checked for cracks/valve seats first...
Richard