My car went in the garage today (1.4TSI Twincharged) for a diagnosis, fix the reason my engine management light was on and a stage 1 Revo remap today.
The garage found that the reason was the previous garage who fit some new spark plugs due to misfires on my car didn't put a hose that connected to my air intake manifold back and it was throwing up a bunch of faults, the garage hooked the car up to the diagnostics machine once again and found that 75% of the faults were fixed but there was still some faults that were saying low compression across all cylinders, the garage then proceeded to test the compression on all cylinders and they were all showing 73 psi apart from one which was showing 71 psi. They decided to clean out the combustion chambers, change the oil and oil filter to try and get the compression back to a normal amount but I don't know the results yet.
If anyone has had this problem or is experienced with this stuff would you be able to tell me what the chances are of getting normal compression from cleaning the internals and changing oil etc would be?
The garage carrying out the work is probably one of the most highly reputable garages in the NW that specialises on VW/AUDI group cars so I have no doubt their equipment is showing the correct readings etc, I'd just like to know what the possible outcomes this could have and if it's going to hurt my pocket a lot.
ADDITION: Car hadn't been serviced for 15k miles and also not serviced since the misfiring problem
The garage found that the reason was the previous garage who fit some new spark plugs due to misfires on my car didn't put a hose that connected to my air intake manifold back and it was throwing up a bunch of faults, the garage hooked the car up to the diagnostics machine once again and found that 75% of the faults were fixed but there was still some faults that were saying low compression across all cylinders, the garage then proceeded to test the compression on all cylinders and they were all showing 73 psi apart from one which was showing 71 psi. They decided to clean out the combustion chambers, change the oil and oil filter to try and get the compression back to a normal amount but I don't know the results yet.
If anyone has had this problem or is experienced with this stuff would you be able to tell me what the chances are of getting normal compression from cleaning the internals and changing oil etc would be?
The garage carrying out the work is probably one of the most highly reputable garages in the NW that specialises on VW/AUDI group cars so I have no doubt their equipment is showing the correct readings etc, I'd just like to know what the possible outcomes this could have and if it's going to hurt my pocket a lot.
ADDITION: Car hadn't been serviced for 15k miles and also not serviced since the misfiring problem
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