Saturday, January 21, 2017 - 08:16 pm, by: Rob Wilson(Rasjab)
Hi all. My son has bought a JZZ31, and loves it, but last weekend it coughed a couple of times, and then went dead whilst driving. It restarted ok, but a few minutes later did the same thing, and then just kept backfiring when we tried to restart it. It is now idling ok, but whenever we try to rev it, it just coughs and misses and won't get anywhere past 300 rpm I did the diagnostic, and the only error code it returned was a 12. I don't have the manual for a JZZ31 diagnostics or troubleshooting, so was wondering if anyone can point me in the right direction for testing etc.