P0284 after replacing head gasket - Ford Powerstroke Diesel Forum
 
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post #1 of 4 Old 10-23-2012, 07:17 PM Thread Starter
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P0284 after replacing head gasket

I just finished replacing the driver side head gasket tonight. It started after about 20-30 seconds of cranking. Now idles rough and it threw a P0284 code. Could this just be because there's air in the oil system that needs to be worked out or do I need to start troubleshooting the #8 injector?

Truck ran perfect before swapping the head gasket. Would just pressurize coolant and puke out the cap.

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post #2 of 4 Old 10-23-2012, 07:44 PM
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Check ficm harness plugs and injector harness plugs.

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post #3 of 4 Old 10-23-2012, 09:09 PM
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When i did mine i had the same problem, mine ended up being a bent push rod that killed the cylinder, once i replaced the bent push rod everything was good.


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post #4 of 4 Old 11-04-2012, 10:54 AM Thread Starter
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Quote:
Originally Posted by kmacicek View Post
When i did mine i had the same problem, mine ended up being a bent push rod that killed the cylinder, once i replaced the bent push rod everything was good.
Same thing. Found this. P0284 after replacing head gasket-imageuploadedbyautoguide1352058813.749097.jpg

Discovered the exhaust valve bridge wasn't set right.
Berge Ford had both in stock. Replaced them and truck fired right up and now runs great.

$35 in parts sure beats a new injector.


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2004 F350 Lariat FX4 CrewCab Longbed
4" TB Exhaust w/gutted cat and no muffler
ARP Head Studs
EGR Delete
Diesel Site Coolant Filter Kit
SCT Livewire w/ Looney Wild Tune
Edge Insight CTS w/EGT
Blue Spring
Zoodad Mod
High-Idle
6.4 Banjo Bolts
Upgraded Turbo Oil Feed and Return
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