PSD missing on one or two cylinders HELP!
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From: Howell, Michigan
PSD missing on one or two cylinders HELP!
On the way home from work today my truck lost a cylinder. what is the best way on this thing to find out which hole is dead? If it was gas I would pull plug wires??? not real sure?? Is a buzz test the only way to check injectors? is it probably an injector or could it be the UVCH only being one cylinder? All the normal stuff is checked. Oil is full of rotella T and only has about 2000 miles on it. I had 50 pounds on fuel pressure at the schroeder valve. Its a 96 F350 4x4 reg cab, 7.3PSD, 209,000 miles DP tuner no kitty, everything else stock
TIA John
Oh yea... cel not on
TIA John
Oh yea... cel not on
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From: Gambrills
Sounds like a UVCH to me. If you think it is 2 cylinders, I would make sure the key is off, pull 1 harness at a time and start it back up and wait for the "no difference" result. Someone may have another way that may be more correct. But if you do it the way I explained, be sure the ignition is OFF when you pull and re-install the wires otherwise you burn pins if the GP's and (ARE) energized.
Last edited by Copedawg; Feb 4, 2011 at 03:52 PM. Reason: and? I mean are
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From: Howell, Michigan
Good to know... Im going to check...
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From: Howell, Michigan
OK, WTF!! I pulled the truck in the garage, kicked on the heat, and came inside to eat. I get done and go out to try to find which hole or holes were dead. I fired the truck up first without doing anything for a reference and it ran fine?? shut it back started it again and same... running fine... so I drove it up to get fuel and back... no problems.
I guess its time for some new GPs (because i have a couple bad ones) and a good inspection under the valve covers. Im thinking at least injector orings, new UVCH, and glow plugs. However I did just get tax money back and im thinking what about a set of stage ones? what is the best cheapest and fastest place to get injectors done? Is there a place that would exchange my injectors so i dont have to wait? I drive the truck daily and it would hurt for it to be down for weeks.
Thanks
John
I guess its time for some new GPs (because i have a couple bad ones) and a good inspection under the valve covers. Im thinking at least injector orings, new UVCH, and glow plugs. However I did just get tax money back and im thinking what about a set of stage ones? what is the best cheapest and fastest place to get injectors done? Is there a place that would exchange my injectors so i dont have to wait? I drive the truck daily and it would hurt for it to be down for weeks.
Thanks
John
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Joined: Aug 2006
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From: Gambrills
I did my GP's and o-rings last fall (after 4 years of telling myself "I will do it next summer") and found a burnt harness and gasket. If you do 1 you may as well do the other. Bigger injectors? Have at it, I suppose.
Glad your truck is running better.....for this moment.
Glad your truck is running better.....for this moment.
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Senior User
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From: Howell, Michigan
Im sure your right... It will rear its ugly head again... I plan on getting glow plugs, UVCH and orings and going though it. then if one of the injectors does puke i will check into the stage 1's. I was planing on doing stage ones but I wanted to get a hpop along with them.
anyway thanks for the insight. Im sure we will be talking about it again soon..
John
anyway thanks for the insight. Im sure we will be talking about it again soon..
John
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Joined: Aug 2006
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From: Gambrills
here is the thread when I changed my GP's and O-rings... there is a lot of great information that everyone gave me to make make it easier https://www.ford-trucks.com/forums/9...placement.html