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ya man, what you said in the video. Pull the vc's, and start unplugging 1 injector at a time ,and see what injector, DIDNT change the pitch/throttle response....also, before unplugging each, while trucks' idling, look at injectors for oil spitting.
 

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I am having the same problem with my 00 550. So far the shop it is in had changed a lot of censors under the hood. put a new pickup in the tank. Cleaned the tank.Changed the hpop. Replaced 2 injectors (number 8 and 3). Replaced all injector o rings. Replaced fuel filter etc.Ran every computer test engine test balance etc. All with no luck. What they have found out today is that the fuel pressure once under a load will drop to almost nothing but when cold at idle it is fine. They hooked up a aux fuel tank to bypass the fuel tank and that seemed to work according to them.

If you happen to get yours fixed soon PLEASE update with solution. Thanks
get your truck, outa there, man.

Get a $38.00 pump and be done. Also, do the HUTCH mod. May want to rebuild the fuelbowl and/or have a look at the FPR spring.
 
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