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So after having problems starting my car without any throttle ever since the engine swap I decided to do something about it. Also since I couldn't find a tute on here so decided to document the process. Disclaimer Attempt this at your own risk. I am neither an auto electrician nor a mechanic. I take no responsibility for any damage that you do to your vehicle in the process of following this guide. Difficulty - Easy Time taken 30-45 min Things you will need Flat head pliers 10mm socket with 1/2" drive ratchet and extension phillips head screwdriver Carby cleaner A band aid Directions The valve on an RB25 is located under the plenum, on an RB20 is is under the throttle body. locate the valve it is a metal and black thing with two vacuum hoses attached to each end. This is what it looks like under the plenum with one of the vacuum hoses disconnected. Use your pliers to remove the clamp and then gently pull the hose off (where it would be in the above picture). The hoses are old and may be quite brittle so take care in removing them. Then there are two 10mm bolts holding the valve to the bottom of the plenum, use your ratchet and extension to make it a lot easier to access. after the bolts are out take off the clamp on the other hose and pull the valve from the hose. Again carefully. Once you have the valve out it should look like this. there are four screws holding the black plastic part on. undo these and it should look like this. make sure you dont damage the gasket as this will cause a boost leak if not rectified. I didn't take the valve appart any further as I didn't think it was necessary. from here spray both parts with carby cleaner, it will probably be all gummed up with oil like mine was so take your time and it should all come up good. Final result. Then just do the opposite to put it all back together, also make sure you do up the four screws nice and tight you don't want to have to pull it back off because its leaking.
