I just changed the timing belt Saturday on my 2000 Accord LX, 4cyl, 5spd. I put a new waterpump, all new belts... all OEM HONDA. It runs great and all, but it's slowely leaking coolant, every morning I check it after it's been sitting all night, and it drops about a 1/4 inch every 2 days(I drive around 50-75 miles perday). Has anyone had any similar problems or heard of anyting? I looked on the back of the engine and I can't see any leaks near the waterpump, and it's also dry at the bottom of the timing cover. Is it possible there is just some air still in the system getting worked out? Let me know what you think. Thanks, Joe.

 

never had a similar isue .. and it is not the air in the system either
Is the coolant that you see coming from the water pump area?

 

I can't see any coolant leaking, that's why I'm confused about it. Thanks, Joe.

 

pressure test the system to make sure there is no leak. top off the radiator, bleed the system again ..
I have seen a few times the leak from the rad drain plug . make sure it is tight and seals properly.. it leaks while you drive and coolant will not show on shield cause drain plug is right over the hole in the shield

 

If you can rule out an actual leak, then... YES you could have air working it's way out.

You should have bled the air out of the system using the bleeder at the thermostat housing. You should have also had the heater temperature set to full-hot so air can't hang out there. Still, sometimes a little air remains.

Each time you drive, it heats up & some coolant (along with some air bubbles) is pushed over to the reservoir. Each time it cools down it should suck coolant back in without the air.

When it's cold, squeeze each of the radiator hoses. You should hear the little rattle-pin in the thermostat, but you shouldn't hear any sloshing noises. If you do, you can still bleed air from the bleeder. On my '98, I usually try to squeeze the upper radiator hose to work air over to the radiator. Still, sometimes I get a little air which works its way out over a couple days of driving.