my 1987 N/A RX7 with a rebuilt motor 3,000 ago has a lot of white milky residue ander oil cap i know this is water and oil... is this a usuial thing or is there somthing putting water in my oil?? if this was a piston motor i would think head gasket.. is there somthing like that in a 13B i should be aware of??? you would think there is deffinatly somthing wrong because you would never want water in your oil however some condensationn is ok?? correct??

 

What does the oil in the crancase look like? Are you loosing any coolant? What is the temperature of the area you live in?. Do you make short runs with the car, shutting down before the engine reaches thermostat temperature?
If the crankcase oil is clean, and especially not milky, and there is no coolant loss, you are looking at condensation mixed with oil. All of the above can cause the problem that some think is normal. I don't like the idea. Check to see if the crancase ventilation is working.

 

oil in crancase looks good coolant level stays full... the temp where i live is currently COLD...humidity is low tho..i do make short runs from time to time but even after a road trip i will pull off the cap and take a rag and whipe it all off it seams like its just condensation but a lot of it and if it sits it turns into that white milky crap.. i will check the breather thats seams like a good idea.

how do i check to see if it working?? just look at it for clogs and what not??

 

Procedures to check the PCV system are in the Haynes and FSM.

The Factory Service Manual can be found in the FAQ For FC thread. It contains all this information and more, and is an essential tool for any sort of service work that needs to be performed on these cars.

Additionally, the Haynes service manual for the 1986 thru 1991 RX-7 (both turbo and NA) can be found at most local auto parts stores or purchased from any good bookstore (ISBN number 1 56392 007 7). It is only about $25 and is a great quick reference for things like this. Not only does it contain most of the information in the FSM condensed into an easy to read format, but it includes full wiring diagrams as well.

These manuals will answer 99% of service related questions for the car and if you intend to do your own repair work, you will need at least one of them. Preferably both, since the FSM is a free download.

If you are running a lot of short trips in cold weather, this is kind of normal.

 

ok thanks i will get me one of those haynes manuals for X-mas 2 myself