loosing coolant

My 1993 Honda Accord 10th Anniversary Special Edition car with 126,000 miles is loosing radiator coolant at the rate of 200 ml for 100 miles. Couple of days back mechanic did a radiator pressure test and said everything is normal.

Any ideas, suggestions to locate the leak?

If it isn't dripping on the ground and the passenger compartment isn't getting wet, it is going into the oil or out the tailpipe. If your mechanic didn't check the radiator when it was hot, he may have got a bad reading.

I did find out water like liquid was dripping from tail pipe, that doesn't have any smell, does this give any idea?

Some water coming out of the tail pipe when you first start the engine is normal. Water is the byproduct of normal combustion. But if your radiator coolant has antifreeze, what will come out of the tail pipe will have a unique smell and will usually produce a white cloud of smoke after starting. Do a radiator pressure check when the engine is hot and see if it will hold pressure. If it doesn't and there are no puddles, it is probably going into the cylinders. Then it is probably a head gasket leak.

Honda radiators (the plastic headers) are prone to cracking and leaking. I'd still put my money on that, even though you were told the mechanic did a pressure test.

There is no white smoke comes during starting or running!

Hi,

Just wondering if you were able to solve your coolant leakage problem on your '93 Accord? How did you solve it?

I also have a '93 Accord, 10th Anniv. Special Edition, with 159,000 miles, automatic transmission, and recently it seems to have sprung a leak on the right side of the engine, close to where the drive belts (I think that's what they call the belts) are attached to the engine.

Would appreciate any feedback on how you fixed your problem, or how to go about fixing my leak.

thanks.






My 1993 Honda Accord 10th Anniversary Special Edition car with 126,000 miles is loosing radiator coolant at the rate of 200 ml for 100 miles. Couple of days back mechanic did a radiator pressure test and said everything is normal.

Any ideas, suggestions to locate the leak?

You mean the left side or the drivers side. Probably the water pump. Needs to be replaced. Look for the water coming out the weap hole at the bottom of the timing belt cover. At 159K, change the timing belts at the same time. It will save you time and money.

idk about 93 accord, but on the 89 accord there is a coolant hose that at the rear part of the engine like right at the center and is very hard to reach and see, that was the only hose i coudlnt change, that hose if there is one on the 93 could have a crak and it leaking

I Have a 92 Accord and it's leaking coolant from somewhere as well. There's no puddles or anything coming out of the exhaust. When it's been running for a while it'll idle rough. i noticed someone said that it may be leaking into the cylinders.
Would this cause the car to idle like it is?

Yes and your cylinder compression could be affected. Could be a head gasket and/or warped head.

I have a 93 with dissapearing coolant syndrom too. The heat isn't as hot as I'd expect it to be, which makes me think water pump to solve both problems.

So, could anyone point me to a good guide on how to change the water pump and timing belt?

Thanks!!

go to autozone.com they have a pretty good online manual

Actually, I'd say a new water pump probably won't solve EITHER of your problems. However, if it's time to change the timing and balacer belts, it's always worth doing the pump at the same time.

Actually, I'd say a new water pump probably won't solve EITHER of your problems. However, if it's time to change the timing and balacer belts, it's always worth doing the pump at the same time.

if it's not the water pump, what would be your diagnosis?

What you've already seen in the posts above.

Sometimes you run into what is called a cold water leak, which can be really frustrating to find, as it WON'T leak with either heat or pressure present.

Most commonly comes from hose ends from poor clamping, or bad water pump seal, sometimes an internal gasket but not as common.

Sometimes these leak so slow, and only once the car has completely cooled down, that the coolant track will follow the engine from the point of the leak instead of dropping to the ground.

Sometimes this will put it into a subframe crossmember or other hiding place where it pools, and evaporates as you drive.

Usually if you get under the car and take a real critical look, watching for the tell-tale track of white dry residue left behind by evaporated coolant, and follow it upwards, it'll take you right to the leak.

Sometimes the track of residue follows a casting seam or other features so closely, it gets overlooked, as it just blends in.