Please Help car over heating and cant figure it out
Thread Starter
Joined: Nov 2004
Posts: 3,174
Likes: 0
From: BatCave, Gothem
Please Help car over heating and cant figure it out
change the water pump
car doesnt smoke
no termostat
just over heats on the freeway i turn on the heater it goes down
I flush out my radiator so what can it be?
if it was a blown headgasket how can I really tell?
car doesnt smoke
no termostat
just over heats on the freeway i turn on the heater it goes down
I flush out my radiator so what can it be?
if it was a blown headgasket how can I really tell?
Joined: Nov 2006
Posts: 7
Likes: 0
From: Lorton, VA, 22079
Re: Please Help car over heating and cant figure it out (blackscooby)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blackscooby »</TD></TR><TR><TD CLASS="quote">
if it was a blown headgasket how can I really tell?</TD></TR></TABLE>
if you are overheating due to your headgasket there are two ways it can happen:
1) coolant is leaking from coolant gallies in the block into the cylinders or more likely the oil gallies, thus mixing coolant with your oil (VERY BAD!). cheack your oil to see if it looks like sludge.
2) combustion gas is leaking from inside the cylinders into the coolant gallies causing (hot) air to enter the coolant system and eventually make it boil over. To diagnose this there are two ways. If you know the level of your overflow tank when the car functions normally, you can observe its level at cold temp, then observe it at normal temp. when it starts to overheat, see if the level in the tank rises considerably and flows out of the overflow in the resivoir. if it does then you could be experiencing combustion gas entering the cooling system boiling it over, but it could also be caused by air in the system (improper bleeding of coolant system). the other, more reliable and definative method, is to take to a shop/gas station and have them test your coolant for combustion gas. they will use some device that attaches to your radiator cap and has a chemical that changes color if there is combustion gas in the system. this will let you know for sure if that is the issue.
if it was a blown headgasket how can I really tell?</TD></TR></TABLE>
if you are overheating due to your headgasket there are two ways it can happen:
1) coolant is leaking from coolant gallies in the block into the cylinders or more likely the oil gallies, thus mixing coolant with your oil (VERY BAD!). cheack your oil to see if it looks like sludge.
2) combustion gas is leaking from inside the cylinders into the coolant gallies causing (hot) air to enter the coolant system and eventually make it boil over. To diagnose this there are two ways. If you know the level of your overflow tank when the car functions normally, you can observe its level at cold temp, then observe it at normal temp. when it starts to overheat, see if the level in the tank rises considerably and flows out of the overflow in the resivoir. if it does then you could be experiencing combustion gas entering the cooling system boiling it over, but it could also be caused by air in the system (improper bleeding of coolant system). the other, more reliable and definative method, is to take to a shop/gas station and have them test your coolant for combustion gas. they will use some device that attaches to your radiator cap and has a chemical that changes color if there is combustion gas in the system. this will let you know for sure if that is the issue.
Honda-Tech Member
Joined: Jun 2002
Posts: 5,527
Likes: 3
From: Where the Hell is 29 Palms
Re: Please Help car over heating and cant figure it out (blackscooby)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blackscooby »</TD></TR><TR><TD CLASS="quote">if it was a blown headgasket how can I really tell?</TD></TR></TABLE>
do a compression test. or better yet do a leakdown test. that will pinpoint exactly where the leak could be. my old DA had a blown headgasket similar to what you described and I just did a compression. thank god I my head didn't warp due to the extreme overheating issues
do a compression test. or better yet do a leakdown test. that will pinpoint exactly where the leak could be. my old DA had a blown headgasket similar to what you described and I just did a compression. thank god I my head didn't warp due to the extreme overheating issues
Thread
Thread Starter
Forum
Replies
Last Post
Simple SOHC
Forced Induction
10
Jul 1, 2006 11:22 AM
SPORT INJECTION
Honda CRX / EF Civic (1988 - 1991)
7
Aug 25, 2003 12:15 PM
