i just replace all my injectors on my 2006 6.0l starts just fine have a engine light seems to be a little rough but when at 55 to 60 mph the engine shakes real bad let off accelerater and smoths out any suggestions wouls help

 

check your icp pressure to see if its got an oil leak

 

what is icp pressure and where could it have a leak

 

Injection Control Pressure - it measures the high pressure oil pressure

your gonna need a scan tool

there are about 20 ways for a 6.0 to have a high pressure oil leak

if the pressure is low then you can do a air pressure test on the oil system

 

How long has it been? they will run a little rough untill all the air is out of the system, also double check all your connections on injectors and especially on the FICM that sits on the drivers side valve cover, must hear them click or they can act funny too.

 

the engine code is P0261 CYL 1 INJECTOR CIRCUIT LOW HOW DO I CHECK TO SEE WHAT IT IS

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the engine code is P0261 CYL 1 INJECTOR CIRCUIT LOW HOW DO I CHECK TO SEE WHAT IT IS ALSO have put about 50 mile on it it starts better than it ever has

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i found the number one injector connector was loose hope that fixed it motor is alot smoother will know in the morning on the way to work

 

Cool, yeah a loose connector will give it a dead miss and make the truck feel like it is going to come apart, glad it was something simple..