Replacing my intake manifold on my 05 rx8 (had crack running lean)
On the replacement manifold there is an extra hose on the bottom of the oil filler pipe that wasn't on the old one. I ordered manifold that goes for series 1 rx8s. So what change is this.

Does anyone know what this line goes to or if i can just cap it and it should be fine


Thanks in advance
Pics below


Old manifold part



New manifold extra line near bottom

 

You can just cap it off. They revised the crankcase venting to help reduce condensation. You'd have to change to that revised breather hose system to use it, but it could be done.


You didn't actually need to change that part if the UIM is leaking. You'd only change it if the vacuum tank is leaking (where the three solenoids are located). That section just bolts on under the actual UIM.

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Figured that out later. I just capped it for the moment will be possible to do the tsb once i get the hose that runs to the nipples on the side of the engine.

Replacing the uim/purge+ other solenoids fixed the lean and evap circuit codes but still have p2070 / new code p0850( need to locate switch to buy) / p0410 (one way valve blew while ago never replaced it)

The only one im worried about is the p2070 as the ssv valve shouldnt be stuck was cleaned and the solenoid was replaced now looking into checking the impact switch but cant find the proper part number. the one from the p2070 thread gives me results for heat sensor. not sure if thats the right part. Part number i have is : N3H4189B1 for Air Charge Temperature Sensor not sure if that the same for the impact switch. sensor

Everytime i fix something something els breaks