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Old Jul 6, 2009 | 08:11 PM
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Help needed asap
TRuck runs perfectly fine even towing unless you jump all over it, falls on its face and starts shimming and shacking, if you pull over you can hear the diesel noise extremely loud, pull back out on the road nail it she will jump right up and then right back on its face. ANy Ideas.
 
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Old Jul 6, 2009 | 08:13 PM
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Have you checked your fuel filter lately? Just a thought... The gurus will be along soon.
 
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Old Jul 6, 2009 | 08:26 PM
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changed the fuel filter hooked up the boat and went to the same hill, no luck, Fuel pump maybe, no light or codes
 
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Old Jul 6, 2009 | 08:27 PM
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Fuel restriction sounds like a possibility to me too.
 
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Old Jul 6, 2009 | 08:28 PM
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I have another pump maybe slap that in there
 
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Old Jul 6, 2009 | 08:30 PM
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Also, make sure you oil is full. But fuel is the most likely your problem.
 
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Old Jul 6, 2009 | 08:32 PM
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checked the oil and hpop its good. But please keep the ideas coming
 
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Old Jul 6, 2009 | 08:34 PM
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Have you run the tank down close to empty recently?
 
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Old Jul 6, 2009 | 08:37 PM
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Yes I did, What are you thinking
 
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Old Jul 6, 2009 | 08:41 PM
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I am thinking you pulled some debris into the fuel pick-up in the tank. I would pull the line off behind the pump and blow it out with compressed air.
 
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Old Jul 6, 2009 | 08:43 PM
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Originally Posted by HKusp
I am thinking you pulled some debris into the fuel pick-up in the tank. I would pull the line off behind the pump and blow it out with compressed air.
Blow back into the tank, low pressure im guessing
 
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Old Jul 6, 2009 | 08:46 PM
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A reasonable amount of pressure. I wouldn't blow 125psi back there but 40-50psi at least.
 
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Old Jul 6, 2009 | 08:49 PM
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igot the line off I will blow pressure back and hook up the same load and try it again be back in 20 min
 
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Old Jul 6, 2009 | 08:53 PM
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Aiiiight. I will be waiting to see if it worked.
 
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Old Jul 6, 2009 | 08:56 PM
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If you blow air back into the tank, it needs to be from behind the fuel pump (there's a check valve in the pump). Also make sure to remove the fuel filler cap before pressurizing the tank. A plastic tank can only hold so much PSI before it ruptures.

If that seems to help, you'll need to drop the tank and clean the screens in the mixing chamber or do the in tank mods to eliminate them.
 
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