hey guys my 2nd gen is overheating realy bad the motor is runing rich and my timing is off but i dont think its realy bad to make my car over heat i cant even drive it for more then 10 mins heres the thing i turn on the car it runs good for like 5 mins then it starts to get hot and then at like 10 mins it makes the resavore start to bubble and steam i just got a new water pump radiator cap the fan is working and im not runing a thormostat wut could be the prob

 

any smoke coming from the exhaust?

 

sounds like the symptoms I was having. you either have a leak somwhere in the cooling system hosing, or a coolant seal failure.

 

yea theres somke but i think its becuase of it runing rich its like a blue and doesnt smell like coolant and i opened my radiator cap and it doesnt smell like exaust some poeple say its that i have air in my system

 

have u noticed a drop in coolant lately when the motor wasnt overheating? sounds like what jono says, coolant seal failure

sounds strange to me that ur resivoir is boiling, mine was boiling becuase the e-fan had stopped working and started to overheat my engine, so i went back to the stocker

check over your hoses and that the clamps are all tight

 

i dont know everytime i open the cap i have to keep adding more coolant in like it keeps eating it or somthing i dont know how can i flush my radiator and get out all the air cuz some poeple are saything thats wuts making me overheat

 

Sounds like coolant seal failure. You cannont smell exhaust gas in your coolant, you have to test for it, you can buy the tester at Napa.

 

It's very difficult to understand what you aer saying due to lack of punctuation, sentences, etc.

However, the first step in troubleshooting the cooling system is to look at http://www.aaroncake.net/rx-7/cooling.htm . Since you mentioned it seems to be eating coolant, then as suggested, it does sound like an internal leak.

 

One of the first things is that you may want to try putting your thermostat back in. Do a search, but IIRC removing the thermostat actually results in less coolant going through the block - it essentially recirculates from the water pumb back to the radiator.

At least that's the way it is on the FD.

-bill

 

One easy test is to remove both of your leading plugs and rotate the engine backward. If coolant comes out of either of the holes then you have a bad coolant seal. You need to do this after the car has sat for a while.
However it does not rule out a bad coolant seal if there is not any signs of coolant in the combustion chambers. We have seen many rotarys where the coolant seal retaining wall has deteriorated allowing exhaust gas into the coolant system but still holding the coolant back from flooding the chamber.

 

ok i bought the motor for 500 with trany and stage 3 clutch its a 13b n/a when i put in the motor and turned it on but at that time it wasnt overheating and it ran good it idled at 1000 and sounded good no lecks nothing and like 2 days later it started to overheat can my coolant seals go bad that qiuck i dont understand can there be a posabliy that theres air in my system or somthing