240SX back up and running but....

[Tokendog]

Originally Posted by ESmorz

Well it's hard to say really. Depends on what the temp was and the amount of time it stayed there along with a few other variables. Unless your car is portraying the tell tale signs of head gasket failure, you are probably in the clear on that front.

Bleed the system entirely. Replace all the lines and fix your leaks. Then add distilled water and water wetter to better help prevent against future over heating.

Dumb question I guess but what are the tell tale signs? I know coolant in the exhaust is definitely a sign as well as poor performance when driving....and coolant in the oil. But what are some signs I can look for while the car is just idling?

I am going to try to get the air bubbles out and if that doesn't work, I will remove the intake again and replace all the hoses under there. My radiator hoses are new and so is the L shaped hose on the back of the head. The only hoses that are not new are the u shaped one near the IACV and the short stubby one that joins the hard pipes together near the IACV as well. I am just hoping I didn't do some thing stupid like leave a piece of paper towel in one of the pipes or something. I am almost 100% confident that I wouldn't do any thing that stupid but you never know...

A lot of people are saying its probably air in the system.

Do you know how is the proper way to loop back the coolant system to eliminate the heater core altogether? It never really gets that cold here so I do not need a heater. Do I just remove the two hoses going to the firewall and then get a hose to connect them back with one another?

Thanks for all of your help!!

[ESmorz]

Originally Posted by Tokendog

Dumb question I guess but what are the tell tale signs? I know coolant in the exhaust is definitely a sign as well as poor performance when driving....and coolant in the oil. But what are some signs I can look for while the car is just idling?

I am going to try to get the air bubbles out and if that doesn't work, I will remove the intake again and replace all the hoses under there. My radiator hoses are new and so is the L shaped hose on the back of the head. The only hoses that are not new are the u shaped one near the IACV and the short stubby one that joins the hard pipes together near the IACV as well. I am just hoping I didn't do some thing stupid like leave a piece of paper towel in one of the pipes or something. I am almost 100% confident that I wouldn't do any thing that stupid but you never know...

A lot of people are saying its probably air in the system.

Do you know how is the proper way to loop back the coolant system to eliminate the heater core altogether? It never really gets that cold here so I do not need a heater. Do I just remove the two hoses going to the firewall and then get a hose to connect them back with one another?

Thanks for all of your help!!

Well, your defrosters do come in handy, even if it's not "too" cold.

Google is your friend.

WikiAnswers - What are the signs of a blown head gasket

It sounds like you just got some air in the system, so get to work on that. You could always do a compression test just to be safe if you are legitimately worried about head gasket damage.

[Tokendog]

Originally Posted by ESmorz

Well, your defrosters do come in handy, even if it's not "too" cold.

Google is your friend.

WikiAnswers - What are the signs of a blown head gasket

It sounds like you just got some air in the system, so get to work on that. You could always do a compression test just to be safe if you are legitimately worried about head gasket damage.

Lol, yeah, google is my best friend honestly. I use it more than the average person. So much so my friends call me Google cause I love to look up /everything/ on it. Sorry I missed this one but thanks for the link. I will do as you said and see what happens. I planned on doing a compression check to make sure I got a good seal this time around. I used ARP studs with stock head gasket, since I read that the sealing issue was with Nissan OEM head bolts and not the actual HG.

Thanks again! any thing else you can think of please let me know!