jags911tt Report post Posted July 1, 2013 Mates Since I got my 07lp40 I keep getting a p0442 codes on all cylinders every so often. Only engine mod on the car is a exhaust but the code came on before its installation. Right before the car was shipped to me it had a valve job performed at Newport Beach. The code says small leak. Any ideas? Thanks Jag Quote Share this post Link to post Share on other sites More sharing options...
jags911tt Report post Posted July 1, 2013 Mates Since I got my 07lp40 I keep getting a p0442 codes on all cylinders every so often. Only engine mod on the car is a exhaust but the code came on before its installation. Right before the car was shipped to me it had a valve job performed at Newport Beach. The code says small leak. Any ideas? Thanks Jag No one? Quote Share this post Link to post Share on other sites More sharing options...
AlphaBoy Report post Posted July 2, 2013 Maybe it's a -Leak/hole in a fuel vapor hose. -Leak in EVAP system. -Vaccum leak. Quote Share this post Link to post Share on other sites More sharing options...
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