t-dub

my 86 rx7 is overheating. i have recently replaced the water pump, thermostat, thermostat housing and hoses. as far as my haynes manual is concerned, the only things left to do are changing my radiator or re-ajust the timing. if anybody has a better idea of what the problem might be feel free to post it. also, i have smoke coming from the bottom rear of the block on the right side and my oil pressure gauge is through the roof even after a full oil change. any advice would help, thanks.

Sideways7

iTrader: (7)

When does it overheat? When not moving, when driving, all the time?

t-dub

my 86 rx-7 keeps overheating i flushed radiator and changed water pump but car still smokes any advice

TriadMotors

thermostat... what color is the fluid when you take it out

Sideways7

iTrader: (7)

What the hell? I just answered you on your other thread.
As I asked there, when is it overheating? They mean different things.

t-dub

everytime i start it it jus gets hotter and hotter til i have to turn it of. it drives a couple of blocks before it gets real hot

t-dub

pretty much all the time

t-dub

is that just my radiator failing to work properly or could it be somethin else?

rlse2003

might be the fan if your just driving in town ur fan might be going out

Sideways7

iTrader: (7)

No, thats not a problem with the fan. It only works at very slow speeds. Assuming to replaced the thermostat with a stock unit, it sounds to me like your radiator is clogged.
This page has good info: http://aaroncake.net/RX-7/cooling.htm Go down to the "constantly overheating" section.

t-dub

how do i know its my fan cuz it seems to be working fine

t-dub

is it possible that it is clogged where my lower rad hose goes into the block?

Stanis

iTrader: (2)

To check the fan: get a paper towel roll poke into the fan. Engine must be at operating temp to do this that way you can tell if it is really the fan clutch. If fan stops then you have a bad fan clutch. I had one go bad on my 87 TII so I just replaced with an e-fan.

Sideways7

iTrader: (7)

I guess its possible, but unlikely. Since you replaced the water pump and thermostat, it sounds like the rad is the only other thing that could be the problem. After it runs, feel around it (carefully) and see if there are hot spots. If one part is cool while another is hot, that means its clogged. If its super clogged, it could be the same temp all the way accross, though.

t-dub

cuz i dissconnected my hoses when i flushed my radiator water came out every hole but ur right its acting like its clogged. its forcing coolant out of my thermostat housing

t-dub

could any of this cause my car to have trouble starting

rlse2003

well if hes driving around twon at low speeds then that might be the problem but i would also check the rad.

rlse2003

he sais he onl drive a couple of blocks and it get hot so the fan might nit be kicking in.

t-dub

i appreciate u guys takin the time to answer my questions this was the right place to come to.but i think ive concluded that the seals in my engine have failed causing gases to mix with the coolant.it makes the most sense.so my next question is...does anybody know where i can find a good deal on an engine for my 2nd gen

t-dub

what would your next move be

t-dub

my car keeps over heating so since i flushed the rad replaceed the thermostat and water pump im assuming my seals are bad so i think i should just get a new engine i need advice from an rx-7 master much appreciated il stay on the line

Sideways7

iTrader: (7)

I drove around for over a year with a bad fan clutch (do not try this at home, kids) and the temp never raised except in traffic where I was sitting for a long time. That only happened twice since I never drove it where it would sit more than the length of a single stoplight.

To the OP, how are you sure that the coolant seals are bad? I went for a while with bad coolant seals and it didn't overheat until it ran out of coolant.

Sideways7

iTrader: (7)

Why do you say that the seals are bad? Do you get a ton of white smoke? Do you have lots of bubbles in the filler neck?

t-dub

well the napkin trick didnt do anything the fan jus kept spinning does that mean my fan clutch is ok?

alexdimen

iTrader: (13)

holy crap man, you have three threads and are bumping your own thread incessantly. chill the eff out!