Codes P0300 and P0302
#31
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#33
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G35 Valve Timing Control Solenoid Gasket or VTC Solenoid Gasket. They're cheap, while you have the VTC actuator off remove the actual solenoid "black plastic part on the end" and clean it out good on the inside. You need to look up a video on this one probably, it's a long cylindrical piece with screens surrounding various oil passageways, those screens may be clogged as well.
There is an o-ring on the end of the solenoid that may need to be replaced before you can reinstall it back into the VTC housing.
Or you can simply buy another VTC actuator if it looks like it's beyond your mechanical means to clean it out. VTC actuator torques back down to the head with 8 ft/lbs or 96 INCH/lbs, do not exceed the torque or you will be hating life. There is no listed torque for reassembling the solenoid back into the housing, just snug it down, the o-ring does the work keeping the oil in.
G35 Valve Timing Control Solenoid Gasket or VTC Solenoid Gasket. They're cheap, while you have the VTC actuator off remove the actual solenoid "black plastic part on the end" and clean it out good on the inside. You need to look up a video on this one probably, it's a long cylindrical piece with screens surrounding various oil passageways, those screens may be clogged as well.
There is an o-ring on the end of the solenoid that may need to be replaced before you can reinstall it back into the VTC housing.
Or you can simply buy another VTC actuator if it looks like it's beyond your mechanical means to clean it out. VTC actuator torques back down to the head with 8 ft/lbs or 96 INCH/lbs, do not exceed the torque or you will be hating life. There is no listed torque for reassembling the solenoid back into the housing, just snug it down, the o-ring does the work keeping the oil in.
#34
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#35
My car has been broken for 4 months
I have a 2004 G35 coupe. I was changing my spark plugs one day and cleaned the throttle body with throttle body cleaner and my car was running good for a few days but then it all went bad, the sound changed and power decreased. I got it diagnosed and they said it was a P0300 and that it was running rich but was still drive able so I changed spark plugs and coil pack and no improvements, I then changed the throttle body and no improvements, I changed the spark plugs again and no improvements, I changed the fuel injectors and no improvements, I changed the spark plugs one more time and still nothing! Spark plugs from cylinder 4 and 6 are arcing and after I put new ones in it was still running bad, I don’t know what else to do, please help.
#38
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#40
I did, they told me everything I already know, they told to buy a new throttle body and I later found out that I didn’t even need to do that, they told me it was P0300. I took it to a specialist after that and they said check the spark plugs after they diagnosed it and they didn’t charge me anything
#41
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#43
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#44
I did replace all of the coil packs and no I didn’t do that so that should be my next move then?
#45
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