03 kia sorento starts runs dies 30 sec later

Question

turn key off and it starts right up leave key in on position try to starting it only cranks. I had to get the heads rebuild put it all togather ran ok but #1 had miss fire no compression in #1 removed that head found 1 exhaust valve bent I replaced that, put motor back togather good compression runs good for about 30 seconds dies if i turn key all the way off it will start right back up every time. If I dont turn the key off but just try to restart it from the on position it only cranks..also it has code PO340 has new cam and crank sensors and has ran good except for the miss fire.

Answer 1

HI there

This usually means there is a timing belt issue. When you get the cam sensor code even after replacing the sensor. The timing belt will only have to be off about 3 teeth for you to see this code appear.