not firing

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douggy89
New Member
Posts: 2
Joined: 02 Jun 2019, 20:47
State: Western Australia
Model: 2002 and magna
Engine: 3.5-Litre 6G74 V6 24V SOHC
Transmission: 5 Speed Tiptronic Automatic

not firing

Post by douggy89 » 02 Jun 2019, 22:58

ok I've got a 6g74 I've changed the crank angle sensor, dizzy, afm sensors, its getting fuel and spark but not firing. all I can think of is maybe the o2 sensor or oil sensor

WytWun
Valued Contributor
Posts: 536
Joined: 09 Apr 2011, 23:22
State: Australian Capital Territory
Model: Mitsubishi Magna TJ AWD
Engine: 3.5-Litre 6G74 V6 24V SOHC

Re: not firing

Post by WytWun » 03 Jun 2019, 21:50

O2 sensor has no impact during starting.

Are you sure that the spark is at the correct timing? While it shouldn't happen, in some case it may be possible to install the dizzy incorrectly resulting in spark at times when it is of no use... similarly the crankshaft angle sensor chopper plate.

douggy89
New Member
Posts: 2
Joined: 02 Jun 2019, 20:47
State: Western Australia
Model: 2002 and magna
Engine: 3.5-Litre 6G74 V6 24V SOHC
Transmission: 5 Speed Tiptronic Automatic

Re: not firing

Post by douggy89 » 04 Jun 2019, 07:50

I will have a look when i get home but i put a compression tester on and the ht lead with the spark plug in to see if the timing was right and it looked like it was 1/4 of a second late

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