Ok guys, I drive a 1998 Gsr and this is my fourth radiator that has leak in 5 months or so. I think I might have a blownheadgasket or some bent valves, but not sure. During normal driving, my car would hesitate around 2-3k rpm and then would jump right back. Check my compression and it was 200 140 145 200. My gas mileage still good and I'm still able to drive the car around town daily. Change my timing belt and waterpump along with the thermostat the other day just to see if the problem goes away, but it didn't. Another thing is when I took off my valve cover, I could see a little bit of yellowish oil on the top of the cam cover. And whenever I try to turn the crank to put the cams to TDC, it would be hard to do and you could hear air hissing out from the head somewhere and after that air dissapear you could turn the crank easily again. I don't know if this is normal or not. Someone please help me out.

 

Hmm, well I don't understand how you can't see that something is wrong.

If you hear hissing, then you are leaking air/losing compression. The yellowish/milky oil means there is coolant leaking into where the oil is. You have a leaking headgasket. Look at your compression numbers. The middle two cylinders obviously have some sort of leak nearby.

Put a teaspoon of oil in the spark plug chamber before you do the compression test. If the numbers rise significantly, then your rings are the culprit on those two cylinders.

You are losing coolant through your headgasket, NOT your radiator. Is there a visual leak anywhere on the radiator? When your compression numbers are like that, you are going to experience some problems. The car won't be running like it should, and the hesitations you are experiencing could very well be the result.

EDIT: You should repair this problem quickly. It will get progressively worse as time goes on. You run the risk of overheating, warping the head, and damaging lots of other things.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by shamoo &raquo;</TD></TR><TR><TD CLASS="quote">Hmm, well I don't understand how you can't see that something is wrong.

If you hear hissing, then you are leaking air/losing compression. The yellowish/milky oil means there is coolant leaking into where the oil is. You have a leaking headgasket. Look at your compression numbers. The middle two cylinders obviously have some sort of leak nearby.

Put a teaspoon of oil in the spark plug chamber before you do the compression test. If the numbers rise significantly, then your rings are the culprit on those two cylinders.

You are losing coolant through your headgasket, NOT your radiator. Is there a visual leak anywhere on the radiator?

When your compression numbers are like that, you are going to experience some problems. The car won't be running like it should, and the hesitations you are experiencing could very well be the result.</TD></TR></TABLE>

Well put just couldn't get it out as fast as you!!