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  #1  
Old 06-18-2013, 01:56 PM
Smokey_7.3 Smokey_7.3 is offline
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Hessitation?

Hey guys,

I got a new-to-me 96 F350 7.3 and im having a hard time figuring out why she has a hard time revving past 2600 rpm and blows white/blue smoke during the hesitation. The engine has almost 400,000 miles so it could be a plethora of things.
Any help is appreciated.

Thanks,
Gus
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  #2  
Old 06-18-2013, 03:59 PM
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Sounds like you probably have some injector oring problems for one thing.

Welcome to fte.
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Old 06-18-2013, 05:10 PM
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Thanks
This is my first ford Powerstroke and I'm pretty clueless, so if I ask some stupid questions I apoligize.

Is there any easy way to check to see if it really is the o-rings while still in the engine? Or am I going to need to take them out to see if they're busted?
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Old 06-18-2013, 05:47 PM
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There aren't any dumb questions. Don't worry about that. Open the fuel filter lid and see if you can see any small particles in there, ie oring particles. There is also a screen in the fuel bowl, about an inch down on the driver side, clean it off with a qtip with the cotton removed, or something like that. I bet it has many oring pieces on it and is gummed up pretty bad. You'll need to remove the fuel filter.
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"TheBeast"1997F2504x4dually4.10's,160k,140VIDM,HPX ,4-5"dp, S366 turbo, 6637, elec. fuel,rosewood stage ones,php,arp studs, comp springs, smith brothers push rods, T500 HPOP,melling lpop,180 tstat,6.0 fan and IC,trucool,coolant filter,scan gauge,lots of other gauges,racer x valve body and billet converter, upgraded trans, F550 leaf springs,SD dual tensioner upgrade, cold ac mod
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  #5  
Old 06-19-2013, 12:11 PM
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With 400k I'd do a compression check before I spent any money
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Old 06-19-2013, 05:36 PM
Smokey_7.3 Smokey_7.3 is offline
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Also just found out that my newly rebuilt E40D doesn't want to shift into 3rd or 4th gear.
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Old 06-19-2013, 09:43 PM
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Welcome to FTE! When you remove the fuel filter, see if the filter and the fuel in the bowl are real black. That's also a good sign of bad injector o-rings.
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Old 06-19-2013, 10:02 PM
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No, the filter and fuel were not black, and I didn't find any o-ring pieces in the bowl. But I did notice there were itty bitty tiny shiny bits floating around in the fuel, looked like metal shavings. Any ideas?
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Old 06-19-2013, 10:06 PM
Smokey_7.3 Smokey_7.3 is offline
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And if my memory serves me right, I think it had an EBPS circuit error.
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Old 06-19-2013, 10:33 PM
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Don't worry about EBPS. The only thing it controls is the open/close EBPV
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Old 06-19-2013, 10:43 PM
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Ok. Works for me :P

So what else is there to check? This truck has been driving my father and I crazy for the past 2 weeks trying to get her to run and drive right.

Thanks for yall's time and help
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Old 06-20-2013, 05:35 AM
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How long have you had the truck? Do you know if the orings or injectors themselves have ever been changed? Your symptom in the first post is a classic injector oring issue. But with those miles, if no injector work has ever been done, they may need some work too. If you do get under the valve covers, it would be a good idea to do a compression test like Mike said.
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Old 06-20-2013, 09:32 AM
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Just bought the truck. The previous owner worked out on the pipeline with the truck and he ended up blowing out the front main on the transmission from so much abuse. So we bought it for 2k

We needed a heavy duty truck to help start our business because my '01 Dodge 1500 can't handle 13,000 pounds behind her safely like we need.

Is replacing the injector o-rings a difficult and expensive job?
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  #14  
Old 06-20-2013, 09:34 AM
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I have no clue as to what kind of work the injectors have had, if ever in their lives.
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  #15  
Old 06-20-2013, 10:39 AM
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Check the oil level in the crank case and the HPOP reservoir.

It doesn't sound like the injectors o-rings are the problem.
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Old 06-20-2013, 10:39 AM
 
 
 
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