no compression
Logistics Pro
Joined: Mar 2013
Posts: 4,097
Likes: 23
From: Kissimmee,Fla
I think your jumping the gun pulling the heads,you need someone that knows the 6.0 to look at the truck. We need all the numbers to help diagnose this problem,and as to the fuel pressure, that just doesn't sound right.How was it taken,with a mechanical gauge at the port,because that is the only way to tell.
Postmaster
Joined: Aug 2015
Posts: 3,910
Likes: 18
From: NW IA
I think your jumping the gun pulling the heads,you need someone that knows the 6.0 to look at the truck. We need all the numbers to help diagnose this problem,and as to the fuel pressure, that just doesn't sound right.How was it taken,with a mechanical gauge at the port,because that is the only way to tell.
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Don't go pulling the heads! No point in taking them off, and not to sound like Captain Obvious here but the heads need to be ON to check compression, it's done at the glow plug hole.
Your first post speaks volumes...........when your mechanic just assumes you need a new engine, he really does NOT know the 6.0
You need something to read data live, even if it's not starting, or there is little the forum can do as far as diagnosis is concerned.
Lead Driver
Joined: May 2014
Posts: 6,545
Likes: 13
From: Virginia Beach VA
The truck will run with fuel pressure over 100... that isn't the issue just yet. Fuel pressure is taken with a gauge and a gauge only.
Check compression thru the glow plug hole, get the heads off and find that wasn't the issue, your out $3000. Don't know about you, but I'd be pissed!
I'd be leery of your mechanic.... let's ask some good questions of him and then respond accordingly... unless your loaded with more money than brains?
Check compression thru the glow plug hole, get the heads off and find that wasn't the issue, your out $3000. Don't know about you, but I'd be pissed!
I'd be leery of your mechanic.... let's ask some good questions of him and then respond accordingly... unless your loaded with more money than brains?
Thread Starter
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Freshman User
Joined: Dec 2014
Posts: 43
Likes: 0
well the good lord didn't bless me with an abundance of either. thanks to you guys the mech. discussed this with his friend a certified ford mech. and he will be checking the compression . the numbers i have so far are fuel pressure[with a guage]at 90, oil pressure 580,ficm at 48. im sorry i dont know what else to measure but i can find out if you let me know. thanks
Postmaster
Joined: Aug 2015
Posts: 3,910
Likes: 18
From: NW IA
well the good lord didn't bless me with an abundance of either. thanks to you guys the mech. discussed this with his friend a certified ford mech. and he will be checking the compression . the numbers i have so far are fuel pressure[with a guage]at 90, oil pressure 580,ficm at 48. im sorry i dont know what else to measure but i can find out if you let me know. thanks
Next, find out what the IPR is reading, this will be a % figure, while it's cranking. Also, is the FICM in sync, ask him that as well.........during cranking. Same thing for cam/crank sync.
Any mechanic versed in the 6.0 will recognize 6.0 "speak"
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Freshman User
Joined: Dec 2014
Posts: 43
Likes: 0
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Postmaster
Joined: Aug 2015
Posts: 3,910
Likes: 18
From: NW IA
Excellent point, if the ICP is unplugged or not connected properly, that number means nothing really. Good catch.
Token Redneck
Joined: Jun 2007
Posts: 9,339
Likes: 350
From: Breckenridge, TX
ICPV is what the sensor sees, it's reported in volts. ICP_DES is what the computer is trying to command, and is reported in psi. They're two separate PIDs in the PC-ED manual.
Fleet Mechanic
Joined: May 2011
Posts: 1,866
Likes: 84
From: Rainier OR
To the OP. If your mechanic cant tell if you have no compression just by the way it cranks over he/she really doesn't know what they are doing. Sorry, don't want to hurt feelings but that is a fact . They are like 99.999 % of the "mechanics" today, just parts changers. From first post, " It doesn't start, must need new engine" Part changer PRO!
Token Redneck
Joined: Jun 2007
Posts: 9,339
Likes: 350
From: Breckenridge, TX
