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Foretravel Motorhome Forums => Foretravel Tech Talk => Topic started by: RRadio on November 30, 2014, 08:36:32 pm

Title: check for coolant leak
Post by: RRadio on November 30, 2014, 08:36:32 pm
I spent this summer camped in Acadia national park on an unpaved campsite. Now I'm in the campground at JAARS in Waxhaw NC on a concrete pad campsite. One of the first things I noticed was a growing puddle of liquid under my engine. At first I thought it was condensation from the cold weather we had, but it's still there now that the weather is warm. I then thought it might be a tiny leak I've been watching very carefully on a transmission fitting. I rolled around under the engine on a creeper and discovered it's actually antifreeze leaking from a plastic tee, or "Y" to be more accurate, on the heater hose above the transmission. The tee is where the coolant filter splices into the system. The clamps are facing the wrong way of course, because they were installed from above before the floor was installed in the coach. I got a ratchet strap and pulled all the other wires and hoses away from the one that's leaking, which was quite an ordeal, then tightened the hose clamp as much as I dared with a 1/4" socket. I noticed the other hoses are rubbing on the transmission mount and will eventually wear all the way through, so it's probably a good thing to roll around under there on a creeper every so often to check stuff like that before it leaks and leaves you stranded somewhere. Look at those tees on the heater hoses above your transmission. There are a bunch of them and they've all got hose clamps that can leak. Mine has been leaking a long time because I've been adding antifreeze and wondering where it was going. I couldn't find the leak until I was camped on a concrete pad so the puddle would show up. Check the coolant level and oil level as part of your pre-flight inspection each day before you start your engine. Check your belts and hoses and of course check to see if there's a kitty laying on top of your engine before you start it. You don't wanna learn about that one the hard way. Check your tire air pressure too... It's good to already know you have a small leak even before you're able to find the puddle, just saying.
Title: Re: check for coolant leak
Post by: stump on November 30, 2014, 08:44:54 pm
PITA!! I changed all my hoses front to back the other week, those are a bugger to get too!!I also found chafing on the trans mount and added chafing gear and pulled everything up with heavy duty zip ties.
Title: Re: check for coolant leak
Post by: RRadio on November 30, 2014, 09:34:14 pm
Yeah, I think I'm gonna pull those hoses away from the transmission mount with a heavy duty zip tie. They'll wear through and leak eventually if I don't. I always look for stuff like that whenever I'm underneath my coach.
Title: Re: check for coolant leak
Post by: wolfe10 on November 30, 2014, 09:54:26 pm
In many cases, gusseting them is a better answer.

Select a hose (used hose is fine) with an ID the same size as the OD of the hose you want to protect.  Cut a length sufficient to protect the area in question plus a couple of inches.  Slit the hose lengthwise.  Slip it over the hose to be protected.  Use nylon zip ties to secure it.
Title: Re: check for coolant leak
Post by: RRadio on December 01, 2014, 06:00:00 pm
I've done that several times only to find the sleeve slipped down the hose or turned itself and fell off or some other annoying thing that puts the hose right back on the sharp object again. I found that moving the hose away from the sharp object is the only way to satisfy my paranoia.
Title: Re: check for coolant leak
Post by: Mark D on December 04, 2014, 11:50:56 pm
Those plastic y adapters are where my heater hose replacement stopped.  The rest from front to rear look like they maybe have been replaced already.  So I drive with my fingers crossed and a right sized coupler and hose clamps so that I can affect a roadside repair and then fill wiht water from the tank to get me to a store with Fleetguard OAT
Title: Re: check for coolant leak
Post by: RRadio on January 10, 2015, 06:02:07 pm
Now that I found and fixed the coolant leak I went to the local Detroit Diesel dealer and bought their bright pink radiator chemical additive. Unfortunately I can't get the pink stuff into the radiator without making a mess, and adding it to the plastic overflow can isn't getting the pink stuff into the radiator either. When the weather warms up enough that I can turn off my block heater the pink stuff will probably get pulled in from the plastic overflow can... hopefully
Title: Re: check for coolant leak
Post by: Rick on January 10, 2015, 07:07:30 pm
Scott,
My metal coolant tank is hard to add any fluid to. What I do now is to pour coolant from the gallon container into an old plastic water bottle, they are pretty thin so the can bend a little, and then pour it in from that.
good luck,
Title: Re: check for coolant leak
Post by: Caflashbob on January 10, 2015, 08:15:26 pm
Scott,
My metal coolant tank is hard to add any fluid to. What I do now is to pour coolant from the gallon container into an old plastic water bottle, they are pretty thin so the can bend a little, and then pour it in from that.
good luck,

bought a long piece of radiator hose.  5 feet
Title: Re: check for coolant leak
Post by: kenhat on January 10, 2015, 08:36:00 pm
Or just get a beer bong. Pro Tip: Don't use it as a beer bong after pouring antifreeze through it.

see ya
ken
Title: Re: check for coolant leak
Post by: RRadio on January 10, 2015, 10:02:09 pm
My radiator and overflow tank are completely full and I can't pour any more pink stuff in without making a mess. I need to wait for the weather to warm up so I can shut off the block heater, then there'll be enough room to pour the pink stuff in... or maybe I shouldn't have fixed the leak so well?
Title: Re: check for coolant leak
Post by: stump on January 11, 2015, 09:08:31 am
Scott why don't you crawl under and drain some coolant out of the petcock on the radiator then add the pink stuff into the radiator cap up top?
Title: Re: check for coolant leak
Post by: Chuck & Jeannie on January 11, 2015, 09:30:50 am
What is "Pink Stuff", and what does it do?
Title: Re: check for coolant leak
Post by: Barry & Cindy on January 11, 2015, 10:35:04 am
Our coach design has an open corner space above the radiator overflow.  We use an inexpensive plastic fitting with a shutoff screwed onto the top of the antifreeze gallon jug.  With the shutoff closed we turn gallon upside down up into the open space, and with fitting in the overflow container, open shutoff to fill overflow.
All coaches don't have this open space.
Title: Re: check for coolant leak
Post by: J. D. Stevens on January 11, 2015, 03:08:30 pm
I found that the flexible extension that screws to the bottom of an "automotive" funnel will fit the top of a coolant container. Screw the extension to the top of a plastic coolant container and you can "squeeze" the coolant into the overflow container. It's difficult to get all of the coolant from a single container into the overflow bottle. However, you can add the remains of the previous container to the top of a new container on the next fill. I've found this to be a simple, effective way to top off the coolant overflow bottle.
Title: Re: check for coolant leak
Post by: RRadio on January 11, 2015, 04:06:22 pm
The "pink stuff" is the coolant chemical additive for Detroit Diesel. I didn't want to drain the coolant unless I have to.