Noob here. please help.
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Noob here. please help.
Hi everyone. I have an 85 6.9 f250 with a banks system on it. I wanted to give it a touch more fuel cuz one of my diesel buddies said the exhaust seemed alittle lean. I know they dont smoke much but it is what it is. I have a egt gauge in it so if it got too hot i could do something about it. I up'd the fuel 1/6 of an inch and couldnt get it to start. Put it back just a hair and it would sputter a few times but nothing major. Turned it back antoher hair and it would fire but wouldnt stay running and that would only happen every once in a while. I put it back alittle more and same thing. Any ideas where i messed up? I checked the wireing on the top of the pump and its all in place. I checked to see if fuel was coming out of the shraider and it is. any advice?
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Joined: Oct 2007
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From: Faibanks Ak.
It sounds like you have a seperate problem. When you unplug the pump can you hear the fss working. Have you cracked an injector line to see if you are getting fuel to the injectors. How well has it been starting before you messed with it.
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Before i messed with it it started ok. Little rough idle when it was cold but otherwise fine. Not sure if the fss pump is working or not. Like i said im a noob so im not clear on what that is. I can check if you can tell me what to look for sorry.
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Lead Driver
Joined: Dec 2006
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From: So. Jersey
Keep in mind removing the triangular plate to adjust the IP, your draining the pump dry. It sounds like you need to bleed the air out. Crack the injector lines until you get fuel pulsing out. Only crank the starter 15-20 seconds and resting 2min in between.
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Post Fiend
Joined: Nov 2003
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From: Nutter Fort, WV
When the engine is running, yes they return excess fuel to the tank.
If you touched them, you need to replace the O rings under the plastic tees and you might as well do the rubber lines between the injectors while you are at it.
After the O rings have been hot a few times, if you disturb them they don't reseal, so air will leak in and let the fuel return to the tank, hard starting is the end result.
When you open the IP, the fuel drains out and is replaced with air.
So you have to bleed all of the air out of the IP before it will start.
No such thing as lean or rich on a diesel, no throttle body so it takes in a full charge of air on every intake stroke.
The amount of fuel injected is varied to speed up or slow down.
Rich = go faster
Lean = slow down
If you touched them, you need to replace the O rings under the plastic tees and you might as well do the rubber lines between the injectors while you are at it.
After the O rings have been hot a few times, if you disturb them they don't reseal, so air will leak in and let the fuel return to the tank, hard starting is the end result.
When you open the IP, the fuel drains out and is replaced with air.
So you have to bleed all of the air out of the IP before it will start.
No such thing as lean or rich on a diesel, no throttle body so it takes in a full charge of air on every intake stroke.
The amount of fuel injected is varied to speed up or slow down.
Rich = go faster
Lean = slow down