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what is a MOT valve? and where is it on my c32

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Old Dec 28, 2006 | 08:59 AM
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Nissan GT-R cobb/midpipe/ic piping/wastegate actuators/tials
what is a MOT valve? and where is it on my c32

hi all,

I have a tapping noise coming from the rear of my engine on the passenger side. the car sounds like a diesel truck. my car is a us model '02 c32 and the noise is not coming from the engine (lifters) or from the purge valve. i am trying to figure out what the noise is and it's driving me friggin nuts. i have searched other forums and noticed that a few others at another forum mentioned the "MOT valve" may be bad. i have no idea what this MOT valve is or where it is located. thank you
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Old Dec 30, 2006 | 04:47 PM
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99 C43 AMG & 2008 Corvette 1LT Z51 LS3
The MOT Valve is the Purge Valve, it is located on the Drivers Side Inner Fender area in front of the upper spring perch. If you are having a noise from the passengers side, engine rear, it may be a lifter issue. There are no other item which I know of in that area that may cause a tapping sound.
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Old Dec 30, 2006 | 05:15 PM
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Nissan GT-R cobb/midpipe/ic piping/wastegate actuators/tials
doh..lifters it is. time to take za engine apart. maybe next weekend.

thanks
meek
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Old Jan 12, 2007 | 07:26 PM
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Do you have experience and tools to replace the rocker arms, lifters and cams? There are many special tools need to perform this job and not risk severe engine damage.
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Old Jan 12, 2007 | 07:29 PM
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Nissan GT-R cobb/midpipe/ic piping/wastegate actuators/tials
hehe, yessir i do. i just had never heard of it being called a MOT valve.
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Old Feb 5, 2007 | 04:06 PM
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Nissan GT-R cobb/midpipe/ic piping/wastegate actuators/tials
problem was remedied..it was a bad plug in cylinder #6..
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Old Feb 5, 2007 | 08:37 PM
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Ok, so you had an engine misfire? No Check Engine Light or Codes?
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