ok so I fixed the axle and car has been running great but last night my gauge said car was overheating it was in the red so I pull over engine is just normal warm but my fill thank is going nuts boiling steaming. so today I check t-stat and take it out to test but still get same problem fans on im lost

 

oh yea car has timing belt water pump and all that done @129kmiles car has 145k

 

ok did some test left car on in 100deg outside car stay reg in middle on gauge but after I drive for a few min and get into boost the fill thank starts boiling and steaming and losing water but only gets hotter when I hit boost around 12-14psi

 

it could be a head gasket. did you check your oil to make sure there was no coolant in it?

 

oil is like new car runs great I don't know why it would have a blown head gasket car never over heated before but who know.anyone know how to do a homemade compression test

 

The leak may be only exposed when under higher temps and pressure. If the expansion tank is swelling with excessive pressure or steaming you have combustion gases entering the tank. Blown head gasket.




There are three chambers on a head. Cylinder, water, oil. When a head gasket blows it does not mean that you are going to mix all three. You can just break from the cylinder to the water or the cylinder to the oil. So, thinking you dont have a blown head gasket because your oil is still clean is not an effective test. If you really want to know go to Napa and get the test that detects exhaust gases in the expansion tank. Its like $40 but will answer your question.

 

Boxpin: I know what you're saying, I just didn't want the OP to be driving it with diluted oil. I understand what you're saying about the chambers

 

im going to just do a compression test and see if its a blown gasket im done with this car already put lots of money into it.so if anyone needs parts all be listing

 

What is your location? I buy cars like this, fix them and sell them.

 

Here is a test you can do but I think the compression will be good.

Pull all the plugs but one. Turn the motor over by hand. If you feel resistance (compression), move the plug to the next cylinder and crank it over by hand again. If you get to a cylinder that doesn't give any resistance, that is the cylinder that has the bad seal. My guess is that the bad cylinder isn't bad enough to have zero compression.

 

 

 

How long have you had the car?

 

im in lncaster ca

 

arond3-4yrs

 

[QUOTE=rspi;363199]How long have you had the car?[/QUOTE

wouldn't the motor be really hot to if it was over heating. I was checking the rad bottom hose and it was only a lil warm and the top gets super hot

 

The top hose will always be hotter than the bottom hose. The water comes from the engine via the top hose to the radiator, cools, then goes via the bottom hose back to the engine.

 

why isn't my motor hot if its over heating the only thing hot is the fill tank thing the rest of my motor is normal and the car has never got into the red on the gauge i cut it off before

 

All because you have a head gasket breach doesn't mean the car is over heating. Not sure what the temp difference should be but it shouldn't be that much. Maybe 30 degrees.