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Vt series 2 v6 dual fuel uses lots of fuel.. valve recession????

Dylanjd94

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Vt v6 series 2 stock pretty much as a rock apart from pacemaker extractors .been running fine for months then a few weeks ago started running rough on fuel runs better on gas but does have a slight miss on gas. On petrol it runs rough on heavy acceleration from idle to 3000rpm it accelrates slowly then once it hits about 3000rpm it comes to life and pulls a bit harder to 5000tpm. Thr engine has done 361,000kms it logged error codes 57 64 76 92 range on a full tank of fuel i about 300kms. On gas it's getting a little less it's backfired Into the intake 4 times in the last few weeks happens as I put my foot down to take off from a stop. It's my daily so it's kinda getting more expensive to drive it to work and back every day. I've put in new 02 sensors and didn't change the way it ran at all still runs like ****. :(
 

Trevor loves holden.

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Backfire from gas is a sign to change the spark plugs, leads or coil pack, change plugs first make sure you get gas rated plugs, check to see if your vacuum line hasn't popped off that runs from bottom back left of throttle body to the firewall on the left side of motor. Being gas you have to have a good spark so any misfire is from a spark. Also check the honeycomb in the MAF to see if its ok, check your air intake after the maf sensor for air leaks.
 

Trevor loves holden.

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Error 57 Injector Power supply monitor ( Voltage variation, Term B12)
error codes 44 and 64 are 02 sensors running lean
76 Air/Fuel ratio (variation between left and right banks)
92 Low speed fan fault
 

Trevor loves holden.

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12 Satisfactory operation (system pass)
13 RH Oxygen sensor (no signal)
14 Coolant temperature sensor (voltage low)
15 Coolant temperature sensor (voltage high)
16 Coolant temperature sensor (voltage unstable)
17 ECU failure (coolant sensor circuit)
18 EGR flow fault
19 Throttle position sensor (sticking open)
21 Throttle position sensor (voltage high)
22 Throttle position sensor (voltage low)
23 Air temperature sensor (voltage high)
24 Vehicle speed sensor (no signal)
25 Air temperature sensor (voltage low)
26 Air temperature sensor (voltage unstable)
29 EGR position sensor fault
31 Theft deterrent signal missing
32 Air flow sensor (voltage out of range)
35 Idle speed error (IAC valve unable to control idle speed)
36 Vacuum leak
41 Electronic spark timing (EST) circuit
42 Electronic spark timing (EST) bypass circuit
43 Knock sensors
44 RH oxygen sensor (lean signal)
45 RH oxygen sensor (rich signal)
46 Crank angle reference signal (engine will not start)
47 Crank angle reference signal (no signal)
48 Cam angle sensor (no signal)
49 Cam angle or crank angle sensor (signal intermittent)
51 Mem-Cal error
54 ECU power supply circuit (voltage variation, terminal A4)
55 Faulty ECU
56 Lean condition under load (supercharged engine)
57 Injector power supply monitor (voltage variation, terminal B12)
63 LH oxygen sensor (no signal)
64 LH oxygen sensor (lean signal)
65 LH oxygen sensor (rich signal)
66 3-2 Shift Control Solenoid Circuit Fault
67 Torque Converter Clutch On-Off Solenoid Control Circuit
69 Torque Converter Clutch Stuck On
72 Vehicle Speed Sensor Intermittent While Driving
73 Pressure Control Solenoid Current
75 System Voltage Low
76 Air/Fuel ratio (variation between left and right banks)
78 Air/Fuel ratio (variation between left and right banks)
91 Quad driver surface module fault
92 Low speed fan fault
93 Knock sensors
94 Vehicle speed sensor, M/T (no signal)
95 Traction control signal (out of range)
96 A/C pressure sensor fault
97 Canister purge solenoid
 
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