Common Toilet Problems & Basic DIY Fixes

Posted By: Bruce Davis Sr. Education, Maintenance,

Toilets…everybody has one…or two… or three. If you’re a rental property owner you may have a sizeable collection. That’s why I felt it was worthwhile to share some common toilet problems and fixes that depending on your skill set, tools, and confidence, you might be able to do yourself.

History – There have always been problems with our toilets. More than 5,000 years ago, primitive systems in several ancient civilizations utilized a constant stream of water that carried waste away from centralized, public latrine systems. Unfortunately, the water from those latrines often flowed back into the same river or stream that was the main water supply. I guess we all live ‘down-stream’ from someone.

In the 1500 – 1600’s in Europe, royalty began to use what are considered the first ‘flush’ toilets, with a big 2-footdeep pot, fed by water from an upstairs source. Almost 8-gallons of water were needed for each ‘flush’. When water was a little scarce, they would often wait until at least 20-people had relieved themselves and the pot was filled to the brim, before ‘flushing’.

More recently, and closer to home, when my wife’s great-great-great grandparents came west by covered wagon and settled in the Blue Mountains of Oregon, they had a fancy ‘2-holer’ outhouse out behind the farm house. Grandma Yoder said that it was a fine outhouse, unless it was winter; when she had to rub the ½” thick hoarfrost off of the wooden seat, first thing every morning before sitting down…

These days, we still have problems and issues with our toilets. Below are some of the more common problems we see… and that you might be able to easily take care of yourself.

Loose Toilet Seat – No matter how old the toilet is, the single most common problem we see are loose toilet seats. These days the screws that hold toilet seats down tight are usually made of a thick plastic because when they were made of any kind of metal, they simply would not survive long and would corrode away. Most all toilet seats just have two long plastic slotted screws under a little lid that can be easily tightened using a blade screwdriver. The screws typically have a nut underneath the porcelain that needs to be held from spinning while tightening the screws.

Water Keeps Running in Toilet – This is also a very common problem that toilets have. After flushing, the toilet fills up, but then it doesn’t seem to shut off all the way and water keeps trying to ‘fill’ the toilet. Usually if that is happening there are a couple of things that can be checked and fixed fairly easily…

(BEFORE attempting any repairs that affect the water to your toilet BE SURE that you can control the water to the toilet, and TURN OFF the water to the toilet when working on any water-works.)

Check the Water Level in the Tank – First of all, make sure the water level is proper, and the float is adjusted so that it shuts the water off BELOW the top of the overflow-tube. If the water level is too high, it will flow into the overflow tube and the toilet will ‘keeps running’. There is usually a line or mark on the overflow tube that indicates the correct water level. If you have an older style fill valve (ball-cock) with a float on an arm, then you can CAREFULLY bend the arm to make the water shut off at the right level.

If you have the kind of fill-valve that uses a vertical post and a Floating Cup, you need to spin the post as described in the manufacturer’s instructions to raise or lower the shut-off point for that fill valve.

Check the Flapper Seal – If the water level is okay but the toilet is still ‘running’, then the flapper in the bottom of the toilet tank is probably not sealing properly. One of the most common types of flappers is pictured in the cutaway tank above, but there are many different types of flapper systems in use today.

You will need to lift the lid off the toilet tank and look and see what kind of flapper your toilet has, and get a proper replacement if you need one. To find out for sure if your flapper is leaking, simply put a little blue or red food coloring in your toilet tank, and see if it migrates down into the bowl after a few minutes WITHOUT flushing the toilet. If it does, then the flapper that is supposed to hold all the water in the tank is not holding properly, and it needs to be replaced.

Hopefully the advice I’ve given will help you navigate some of the simpler toilet problems. You can also find many ‘how-to’ repair videos online. That said, don’t be surprised or discouraged if you try and try to fix your own toilet, and you simply can’t, and you need to call in a professional. Sometimes, it’s not as simple as it seems.

In our own apprenticeship course for service plumbers, we spend over 24-hours just on Basic Toilet Repairs, because there are so many different kinds of toilets, and there are so many things that can go wrong. The truth is, as common as toilets are, they’re sometimes very tough to fix, and even the pros have to make a couple of attempts to get it right.

Bruce Davis, Sr. is a Licensed Journeyman Plumber, Licensed Electrician, HVAC/R Electrical Administrator, HVAC/R ,and Certified WA State C.E.U. Instructor. Day and Nite Plumbing and Heating, Inc has been in Lynnwood serving Snohomish and N. King County for over 68-years, and Bruce Sr. has been President and working at this family-owned business for 36-years. Bruce can be contacted at: Email: Day and Nite Plumbing and Heating Inc. 16614 13 Ave. W., Lynnwood, WA 9803, (800) 972-7000.