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Old 11-15-2009, 04:36 PM
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Fuel Pump?

So, lately my truck has been sporatically ideling rough at stop lights. Not all, but some. It'll shake bad until I accelerate and then it'll be fine. Well this morning when I started it up it, it started fine, until after a few seconds it started ideling really rough, and then it totally bogged down and cut off. I restarted it, and it was fine. Drove out to town and no problems until on my way home. Again, started shaking real bad at the stop light. So i decided to check the fuel filters. The top one had no fuel in the bowl, so I decided to check the bottom filter. THere appeared to be rust inside the black plastic housing. I assumed this was the culprit, so I decided to get new filters. I replaced both, primed the truck, and now it won't start. There is no fuel in the bowl. What do ya'll think? Fuel pump? The only thing done to the truck was an egr delete about 3 weeks ago.. any correlation?
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Old 11-15-2009, 05:01 PM
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any ideas?
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Old 11-15-2009, 08:39 PM
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anyone out there that has had this happen?
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Old 11-15-2009, 08:51 PM
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have you ever ran a 6oh out of fuel before? because even after a fuel filter change if you drain enough out they can take a bit to start. also do you have a way to check fuel pressure. Maybe you can bleed air out too.
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Old 11-15-2009, 08:54 PM
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Have you checked for DTCs? If so, are you getting P0232? Have you checked for + and - at the fuel pump connector with the key cycled to the RUN position? If you suspect a fuel pressure issue, you can install a pressure gauge into the secondary fuel filter housing by the fuel pressure regulator where there is a 6mm allen head plug. Fuel pressure spec is 56 psi at idle, and no lower than 45 psi under load.
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Old 11-15-2009, 09:30 PM
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Quote:
Originally Posted by dereku View Post
have you ever ran a 6oh out of fuel before? because even after a fuel filter change if you drain enough out they can take a bit to start. also do you have a way to check fuel pressure. Maybe you can bleed air out too.
I never ran one out of fuel. No i don't have a way to check fuel pressure.. and how exactly do you bleed the line? The secondary filter didn't have fuel in it before I decided to change filters. It was idleing poor at stop lights which is why I started looking at my filters.. noticed the secondary only about a quarter inch of fuel. Decided to check the primary and there was crap all in it. replaced, and now won't start. Keep trying to prime it?
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Old 11-15-2009, 09:34 PM
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Quote:
Originally Posted by m-chan68 View Post
Have you checked for DTCs? If so, are you getting P0232? Have you checked for + and - at the fuel pump connector with the key cycled to the RUN position? If you suspect a fuel pressure issue, you can install a pressure gauge into the secondary fuel filter housing by the fuel pressure regulator where there is a 6mm allen head plug. Fuel pressure spec is 56 psi at idle, and no lower than 45 psi under load.
Yes, and it isn't showing any codes. Only the 0403 (ever since i deleted the egr) Unless my scan tool can only read one code at a time or something. No i have not checked for + or - at the fuel pump connectyor with the key cycled to the RUN position. I'm not sure I really understand what you mean? where do I get a pressure gauge? Thanks for all of your help guys!
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Old 11-15-2009, 09:54 PM
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If i can't get it started, then I can't really do a pressure test can I?
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Old 11-15-2009, 09:58 PM
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you can because you should still have pressure at your secondary fuel bowl...
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Old 11-16-2009, 06:55 AM
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Quote:
Originally Posted by STORMTROOPIN View Post
you can because you should still have pressure at your secondary fuel bowl...
Thanks!
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