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FC (Forward Control Unique Issues) If you have a unique issue with your FC model coach and it can't be answered in one of the other forums here, then this is where you can list it.......List your FC Parts here too.

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  #51  
Old 07-20-2010
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Crit,
I hope you can get this fixed and back on the road when work allows you time to travel.

On another note..
I thought that ULSD seal situation was considered a non issue? I know it is often brought up, but there seem to be many 'experts' who say it isn't a problem. Otherwise we're all in trouble.
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  #52  
Old 07-20-2010
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Claim made by the owner of the garage, time will tell. But he did predict it when I described to him what was going on, rotting fuel lines.
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  #53  
Old 07-20-2010
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Rotting fuel lines are better than a rotting fuel pump.
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  #54  
Old 07-20-2010
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i would still add a lift pump while i was in there,replacing the lines.
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  #55  
Old 07-21-2010
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Quote:
Originally Posted by Randy Dupree View Post
i would still add a lift pump while i was in there,replacing the lines.
Yep, good advice!
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  #56  
Old 07-21-2010
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Ok, I will. The pumps they put in their trolleys are set up to automatically keep 6 lbs. in the lines with a demand type pressure switch, that type of set up would let my generator be able to still get fuel from the main tank.
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  #57  
Old 07-21-2010
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We have a diesel suburban and Carol was telling me it was smoking a lot,black smoke.
I changed the fuel filter and when i went to use the lift pump to fill the filter it would make the clicking noise but didnt pump a drop of fuel.
I put a new pump on and it pumped as required and the truck stopped smoking and the fuel mileage went up considerably.
When you have low fuel pressure,bad or no lift pump,or a dirty filter the fuel does not spray the right pattern out of the injectors,resulting in smoke and poor performance.
Having positive pressure on the injector pump is good,6Lbs is great.
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  #58  
Old 07-21-2010
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this is where pinching the return line will supply more of the avaliable fuel to the burn part of the ipump to show the problem. this is also where a screwed supply will not allow for the engineered use of diesel fuel to cool the injectors and on later years cool the computer modules. when you starve the supply you lose the volumn side of the equation to maintain psi at a given gpm rate.

On repair; tight fit / short hoses that are twisted tend to come apart at the inner plys. I like to use plastic air line for diesel fuel supply hose. I used it once 15 years ago on a tractor at a jobsite for a temp repair and noticed 5 years later that it performed better than the rubber oem product. there may be a spec plastic fuel line avaliable ??

this may be a sign of low sulfur fuel drying out the oil rich old fuel lines. turn over of commercial trucks wont show this issue as a common problem so signs of that may only show up here and in old 3208 boats. drying out of fuel lines may be a factor of hours saturated with new fuel and not miles driven.
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  #59  
Old 07-21-2010
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The ULSD has added lubricity components and shouldn't need anything else. It will not hurt older diesels. I'm betting the return hose bought last year wasn't fuel rated or was a bad batch of fuel hose.
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  #60  
Old 07-21-2010
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Just replacing the hose from the hand pump to the injection pump today on my 3208NA. The Parker hose Store gave me a hose called TOUGH COVER 451TC. I asked the dude if it was diesel fuel compatible and he looked like I asked a personal question. He wasn't sure so I searched it when I got home and ULSD is not in the spec but lubricating oils are. I emailed Parker and talked to the on call tech person but she was not sure so I got an inside email so I can get an answer before Tuesday. Let's see what they say!! Not installing it until it gets passed as OK. Rick in Ohio
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