TwinTurbo.NET: Nissan 300ZX forum - This is a common issue
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Subject This is a common issue
     
Posted by spicyZ on October 08, 2015 at 9:56 AM
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In Reply To TB stuck open from the valve cover vent tube posted by RZturbo on October 08, 2015 at 09:31 AM
     
Message Has nothing to do with your re-route. I've had this happen in the past as well.

The fittings are just a press fit into the valve covers, and they can work their way out over time.

A common fix is to apply some epoxy to secure them in place.
I check mine every so often to ensure they haven't worked their way loose.

It can lead to an extremely dangerous situation. In my case I noticed the TB's "sticking" a bit. Luckily a kick of the accelerator pedal free'd them and it didn't lock open at WOT or something crazy.

I find it interesting that Nissan used a press fit there given its proximity to the TBs.

-jb

     
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