Odd 6.0 Problem
Thread Starter
|
More Turbo
Joined: Jun 2009
Posts: 580
Likes: 58
From: Michigan
Odd 6.0 Problem
My buddy has a early 04 6.0, 122k, all stock except for a EGR delete. When this truck is parked with the front end up, like on a drive way grade it has a long crank time, if the front end is down so the back bumper is higher than the front bumper it starts fine. This problem has been going on few a couple of years and it has to sit overnight, once you start it in the morning it's good all day. He has not left it with me overnight so I could watch ICP in AM. Rite now it has a bad ICP switch, oil is leaking into the connector, I'm changing it now, so I think the were PID's are off a little. It has 50 psi fuel pressure as soon at you turn the key on, so IDK I'm scratching my head wondering what to check, any thoughts, ideas?
Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
High pressure oil resivor supply is at the back. Maybe oil is draining back through the pump or a bad o-ring when the truck is parked nose up. Resivor would have to refill before it starts.
Posting Guru
Joined: Jun 2012
Posts: 1,171
Likes: 2
50 psi fuel pressure KOEO is the lowest possible limit for acceptable pressure - in other words, way too low for comfort. 60 psi is more like it. Install the blue spring upgrade kit, then chase your high pressure oil pump leak down issue.
Brian
Brian
Thread Starter
|
More Turbo
Joined: Jun 2009
Posts: 580
Likes: 58
From: Michigan
I did put the blue spring kit in it already, sometimes it was at 35 psi before the kit. It also has a new ford fuel pump.
Thread Starter
|
More Turbo
Joined: Jun 2009
Posts: 580
Likes: 58
From: Michigan
Thats kinda what I was thinking, but what is leaking. I'm going to air test the HPO system and see if I can find a leak. I have never seen anybody post a problem like this before and didn't find anything searching the forums.
Postmaster
Joined: Jul 2011
Posts: 3,263
Likes: 0
From: Houston, TX
possible icp sensor or FICM with regards to the long crank time too. btw, ur buddy's icp sensor should be in the back of the engine, me thinks.
test the ficm too. if it's putting out 45v from KOEO to ignition to idle (up to operating temp) at any time, then it's time for rebuild on the FICM.
i agree with the guys too. HPOP seal tend to deteriorate and leak from there.
test the ficm too. if it's putting out 45v from KOEO to ignition to idle (up to operating temp) at any time, then it's time for rebuild on the FICM.
i agree with the guys too. HPOP seal tend to deteriorate and leak from there.
Logistics Pro
Joined: Mar 2007
Posts: 4,604
Likes: 4
From: Claremore, OK
Trending Topics
Thread Starter
|
More Turbo
Joined: Jun 2009
Posts: 580
Likes: 58
From: Michigan
The FICM has been repaired and the voltage is above 45 volts, it did have the start problm before the FICM failed last year.
I have seen the BB in HPOP's before, and I wondered if that could be the problem, IDK?? I'm going to look at it tomorrow
Yes the ICP switch is under the turbo. The engine was running bad warm and ICP PID's were off so I figured it was bad, I pulled the connector off and it had oil on it, so I'll fix that tomorrow.
I have seen the BB in HPOP's before, and I wondered if that could be the problem, IDK?? I'm going to look at it tomorrow
Yes the ICP switch is under the turbo. The engine was running bad warm and ICP PID's were off so I figured it was bad, I pulled the connector off and it had oil on it, so I'll fix that tomorrow.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Posting Guru
Joined: Oct 2006
Posts: 1,693
Likes: 7
From: Francestown, NH
-> https://www.ford-trucks.com/forums/1...deo-added.htmlCheezit:
what is basicly going on is the resivior for the high pressure pump is draining out overnight.
The ones I have found have all been casued by the high pressure pump leaking from the pump shaft seal.
it is possible that there could be a crack in the sump alowing drain back to the pan but I have not seen or heard of it yet.
Blueline970:
Cheezit I could we possibly get some pictures and part numbers for the seals. I also have same issue and like to see what I am getting into before tearing stuff apart. I havent had much luck finding anything.
Cheezit:
sorry but pump shaft seal is non servicable. new pump would be in order.
if any of you guys are really good with searching there is a thread thats pretty old with a lot of info on it.
also if the truck is nose down it makes the pump higher the tne resivior and cant bleed out that way.
<!-- / message --><!-- / message --><!-- / message -->
Thread Starter
|
More Turbo
Joined: Jun 2009
Posts: 580
Likes: 58
From: Michigan
Ok. I air pressure tested the HPO system and found the oil manifold to injector seal leaking on #6 or #8 injector, I could hear the leak but couldn't tell witch one or if both were leaking, so I have 4 seal kits that will be here tomorrow and I'll do all four injectors. I think maybe that could have been the starting problem. I'll update you guys as soon as I know its fixed. Thanks
Thread
Thread Starter
Forum
Replies
Last Post