Saabretooth 8 Report post Posted December 3, 2015 Thanks guys for the update. There's good news and then even better ones, and then will have to monitor before its conclusive. Prior to Baz suggestion, I checked all the potential leak points for the intake side, even the vacuum hoses and joints.... - Swapped out Bank 1 Precat Lambda & Swapped out Bank 1 Post Cat Lambda. still had some Misfire Errors - Swapped out plugs, Previously were on 0.7mm gapped plugs, and now am on 0.95mm gapped plugs. Misfires were a lot less, and so was the urgency in power delivery. Car felt smoother though. - Did the compression Test, and all were in the 18 Bar range. Mech didn't think it was necessary to open it up, valves and all are fine, and so are the lifters. - Swapped out the 2500km (and 3 week old) 5W50 oil and topped up with 10W60 ENI oil... Still had Misfire P0300, P0301, P0302, P0303 error Cleared alll the errors .. and now, about 100km later, still no error at all. Am keeping my fingers crossed. Didn't think that the engine oil had anything to do with the errors at all. and I hope it solves it all. Good thing so far from the exercise, I got to replace 2 dodgy Lambdas And find out how healthy the compression of my engine was. If the errors still stay away till next week, I'll update. Although, mechanically, its telling me that the changes are only masking some long term repair work in the making... Friend from the Netherlands was thinking it could be rear timing that's off by even 0.2mm, which could cause the idling misfires. Sent from my E6853 using Tapatalk Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted December 4, 2015 This does happen when the 2.5/3.0 timing locks are used on a 3.2, but it's normally throwing up codes from the first day when that is done AND there is a backfire which is VERY obvious to the ear. Quote Share this post Link to post Share on other sites
Saabretooth 8 Report post Posted December 4, 2015 Nope, no backfires at all. we used the 3.2 Cam Locks on this car. Now I'm getting the misfires at the traffic lights at most 2 x a day. Used to be at every other traffic light. I suspect it is now a potentially off timed rear cam. from what's been narrowed down so far. Quote Share this post Link to post Share on other sites
nicuviasu 0 Report post Posted May 10, 2016 Hi, did you manage to solve the issue? I have an Alfa 159 3.2 Q4 and i have the check engine flashing. Diagnosis show me misfire for cylinders 1,2,3,4,6. I have changed the lambda which is below the car, spark plugs but still the light is coming on. Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted August 1, 2016 GTi ??? Quote Share this post Link to post Share on other sites
