Ok so i just bought my first rx7 a 1990 gxl n/a and i have a small question. OK so in the morning it smokes a medium amount until its warmed up its blue smoke so im guessing its oil. I have 2 oil leaks visible in my engine bay.After the car is warmed up ill drive it normally for 5 min or more then get it up to like 6k rpm and when i shift into next gear i notice smoke from the back this happens most of the time that i shift in high rpms going fast. my oil pressur will also drop to almost zero until im at a red light where itll go back to normal. I also have racing beat headers on it. I hope that someone can help me i dont want it to be the oil seals casue i jsut bought this car and will be so sad ): thanks for everyones help and please let it not be the oil seals.

 

It's either the oil seals, OR the oil injector nozzles/pump.

OIl pressure drops to almost 0??
CHeck the oil, do you have any?
Check the colour, see how much it smells like gas. If it smells a tiny bit like gas. it's OK. sIf it mells just like gas, not lie oil at ALL, then it's bad.

 

Oil pressure drop to almost zero when higher shifting rpms
Had an oil change 2 weeks ago and almost at low again.
havent smelled it yet

thanks for the help

 

What grade oil?
A high mileage car in Florida should get 20W-50.

Has it ever been overheated?

Maybe start planning for a rebuild or a J-spec swap.
Until then you can buy some time with a shot of "motor honey".

 

my na has 153k, original engine, no rebuild, and i run 10w30 without any problems, unless i rack it off when it hasn't warmed up all the way, then i get blue smoke out the tailpipes, but only when it is cold.

shuold i use the 20w50, or should i stay with the 10w30?

i don't smake any other time, only the normal amount when started up cold

 

When my '79 GS was doing this I switched from 20-50w to 10-40w or 10-30w on the advice of RotaryBeat, this minimizing the smoke and oil use dramatically.

 

There are many variables of climate & engine condition.
If 10w-30 is smoking, try 20w-50.
If it helps, use it, if not, go back to 10w-30.

[rianshima]'s motor seems to be smoking & leaking pretty bad.
It could be too thin a base oil like 5w-30, or a thin synthetic oil, or worn oil rings, or heat warped side plates.