P 0300 code
The run down... I just put an lq4 block with a turbo, comp cam xr265, #60 injectors in my truck. Its throwing a code p 0300 multiple misfire. I changed out the plugs, coil packs and spark plugs. The plugs are tr6 4177 gapped to 29. I did have it tuned on the previous 5.3 and turbo and was told that the tune would very close. Is it possible the tune?
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Po300 is the pain in the ass code. Check to see if your intake has a leak.check make sure all 8 injectors are clicking. Fuel pressure test. Compression test...clean tb and maf also, that's all i can think of right now
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Did you have a cam in the 5.3?
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Originally Posted by 06murder
(Post 5119005)
Po300 is the pain in the ass code. Check to see if your intake has a leak.check make sure all 8 injectors are clicking. Fuel pressure test. Compression test...clean tb and maf also, that's all i can think of right now
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Originally Posted by BLK02WS6
(Post 5119202)
Did you have a cam in the 5.3?
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how much boost are you running? when i went from 6 to 10 i needed a smaller plug gap, could be as simple as making the gap smaller, at least this fixed my po300
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It very well could be the cam - it is common to need misfire tables tuned because they throw P0300 during low rpm with a cam. If it doesn't have any misfire codes coming in for specific cylinders, and it runs well with no apparent miss, that would be my guess...
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It needs to be tuned for the setup. Also
Needs a crank relearn. After that your p0300 will be gone. |
I'm having kind of the same issue. When should the crank relearn be used
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Originally Posted by dbizzle
(Post 5119212)
how much boost are you running? when i went from 6 to 10 i needed a smaller plug gap, could be as simple as making the gap smaller, at least this fixed my po300
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