6.5 backfireing
backfireing?? what cud be doing this the only time it dose it if im at 2000 2500 rpm
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Broken valve spring or misaligned rocker arm?
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that dont sound right to me i would here something if that was the case like knocking taping somthing like that
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Backfiring don't sound right to me-the only way a back fire can happen is if an intake valve is open during a compression or power stroke when they should be closed.
If you can figure out another way for an intake valve to be open when it should be shut I am all ears. A broken valve spring that has broken very close to the first coil will still hold the valve shut until speeds get to high and valve float occurs. If a plastic rocker arm retainer broke,2 nearby rockers could interfere with each other and with how noisy these engines are it is unlikley you would hear anything-you should notice a miss though. A stuck open EGR valve could also have a symptom like a backfire if exhaust pressure got high enough. |
it sounds more like a sputter to me
---AutoMerged DoublePost--- i had air in the lines and just found out the filler tube poped off put it back on and now this is happening |
A bent or cracked valve could be part of the problem?
I can't hear the noise so I can't come up with any ideas outside of what you describe the problem to be? ---AutoMerged DoublePost--- Filler tube as in where the fuel cap goes? A plugged cap vent can cause lots of running problems-miss or fishbite might be 1 of them. |
where dose the ground go on the filler its just dangeling
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Ground goes to the body,it is to prevent static shocks that can ignite vapors.
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ok thanks the sound im hearing is not a backfire its more like the truck is sputtering then it stops idk what it is its driveing me crazy :argh:
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i recently had the same issue.. hard start, runs like shit and then dies.. check your lift pump or oil pressure switch
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"Fishbite" possibly ??? A term we long time 6.5ers have put to a stumble at power where the truck jerks/tugs sort of similar to feeling when a fish first hits bait on a fishing pole.
You need to do a fuel delivery Lift Pumps & OPS operation and troubleshooting & basic diagnostics 1st 6.5 Engine Diagnostic Troubleshooting Checklist |
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