Random misfire - Where to look
07-20-2016, 09:23 AM
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Random misfire - Where to look
First of all before I get jumped on, I have searched and read every post I could find about misfires and none of them describe my issue. On my 2006 A4 Quattro 3.2l w/Tiptronic with 83000 miles, I am getting a misfire only on cylinder 4 when I fist step on the gas. I have VCDS and it shows the misfires go away after higher revs. I have installed all new injectors, plugs and coils. I have moved coils and plugs around from different working cylinders and still no change. I have all new upper and lower intake gaskets and seals and I have done the valve cleaning. According to VCDS I get the misfire right at acceleration and every once in a while at idle but not enough to turn on the MIL. Where would be the logical place to start checking to see what could be causing it. Thanks.
06-13-2018, 02:31 AM
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First of all before I get jumped on, I have searched and read every post I could find about misfires and none of them describe my issue. On my 2006 A4 Quattro 3.2l w/Tiptronic with 83000 miles, I am getting a misfire only on cylinder 4 when I fist step on the gas. I have VCDS and it shows the misfires go away after higher revs. I have installed all new injectors, plugs and coils. I have moved coils and plugs around from different working cylinders and still no change. I have all new upper and lower intake gaskets and seals and I have done the valve cleaning. According to VCDS I get the misfire right at acceleration and every once in a while at idle but not enough to turn on the MIL. Where would be the logical place to start checking to see what could be causing it. Thanks.
Same issue, mexhanic tellling me its the timing chain $$$
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