Nelson Tune.... Round2

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12-03-2009, 12:42 AM
GenIII_4Ever

Nelson Tune.... Round2

Well I got my tune today. Seems to be just like the other tune was. But that tells me it wasnt the tune the whole time. Allen I know you said its prob the fuel pump. But what about the injectors? Im using a used set I bought off a member from pt.net? Would a bad injector cause it to stumble and lose power when I accelerate?
12-03-2009, 12:46 AM
ff_jeff

Quote:

Originally Posted by GenIII_4Ever

Well I got my tune today. Seems to be just like the other tune was. But that tells me it wasnt the tune the whole time. Allen I know you said its prob the fuel pump. But what about the injectors? Im using a used set I bought off a member from pt.net? Would a bad injector cause it to stumble and lose power when I accelerate?

If you need more injectors to test out. I have a bunch of used ones. your welcome to them. :)
12-03-2009, 01:04 AM
GenIII_4Ever

Quote:

Originally Posted by ff_jeff

If you need more injectors to test out. I have a bunch of used ones. your welcome to them. :)

Nah my dad has a 05 Silverado his company gave him for a work truck. It has the 4.8 in it. I think ima yank the rail+injectors off it and test them on mine. That should tell me if its the injectors. If it doesnt ill be buying a fuel pump. Then if that isnt it ill swap O2 sensors. If that isnt it:sigh:
12-03-2009, 08:52 AM
ecld_07

have you changed the plugs? Just a wild guess but mine has done the same thing and that was the cause after i spent weeks hunting. Just an idea.
12-03-2009, 10:01 AM
farmtruc

If those injectors were sitting around for any length of time, they are probably sticking, also, like we spoke about, check that fuel pressure just to be sure.

any truck from '00 to 04 will work with your setup, stock 24's.
12-03-2009, 02:34 PM
GenIII_4Ever

Quote:

Originally Posted by farmtruc

If those injectors were sitting around for any length of time, they are probably sticking, also, like we spoke about, check that fuel pressure just to be sure.

any truck from '00 to 04 will work with your setup, stock 24's.

Yah ima check my fuel pressure today and swap the plugs.
12-04-2009, 01:46 PM
GenIII_4Ever

Well had a chance to check my fuel pressure at the rail. Idle it sits around 58-60psi when im driving around its 60-63psi. So im stumped besides the O2 sensors I have no clue lol.
12-04-2009, 02:21 PM
farmtruc

it might be a bad injector, or dirty one.
12-04-2009, 07:15 PM
GenIII_4Ever

Well I added some injector cleaner to it today.. But that stuff is worthless I think. Whats a good way to clean them one by one?
12-04-2009, 07:31 PM
George C

what exactly is the problem? also what did you do prior to this happening? do you do a few mods? if so what did you do?
12-05-2009, 08:25 AM
casey23

tune questions

Quote:

Originally Posted by GenIII_4Ever

Well had a chance to check my fuel pressure at the rail. Idle it sits around 58-60psi when im driving around its 60-63psi. So im stumped besides the O2 sensors I have no clue lol.

again what is the exact problem?.. what are the mods to the truck??.. Your throwing drivers side o2 sensor codes?...
12-05-2009, 04:38 PM
GMCtrk

Uhh...of course it's not the tune. You said in the other thread it sounded like something rattling around in the engine. It sounds like you have a hole in one of your pistons or a valve bouncing around in there.
12-08-2009, 08:34 PM
GenIII_4Ever

Quote:

Originally Posted by GMCtrk

Uhh...of course it's not the tune. You said in the other thread it sounded like something rattling around in the engine. It sounds like you have a hole in one of your pistons or a valve bouncing around in there.

Truck runs better now swaped out the burnt plugs. And took it on a 450mile round trip last week. Ran pretty good but still is a little weaker than normal on the low end.
12-11-2009, 09:52 AM
farmtruc

Quote:

Originally Posted by GenIII_4Ever

...but still is a little weaker than normal on the low end.

Probably because your truck doesn't have the supercharger on there anymore.