Lisle 60800 Heater Core Backflush Tool with Air

The Lisle 60800 Heater Core Backflush Tool with Air is a great product that serves a specific need and does it well (and affordably).Have been fighting for years with the common problem of NO HEAT from drivers side vents on my 2011 Jeep Wrangler. Watched many videos on how to fix this and bought a couple hoses, connectors, etc. and tried a straight garden hose water flush - didn't work (not much, if any, sediment came out). Drove with no heat for another season thinking I had to replace my heater core - something I was not looking forward to.In a desperate attempt to get heat in the middle of winter, I watched videos about replacing heater core (and was ready to pay the price) when I came across a video of a guy using air + water to clear heater core blockages using a competing product (MightyVac). Since that product was pretty expensive, I searched and found this Lisle version - which frankly is overpriced for what it is BUT worth every penny for the fix it provides.How I cleared my blockage and got heat back: Cut a sacrificial hose into 6 foot sections, attached 1/2" x 8" copper pipe pieces with clamps, thus creating created an inlet & outlet hose to plug into my heater core supply lines. I clamp/pinched radiator top hose with a hose clamp tool to avoid coolant loss. I pushed remaining coolant out of heater core water from garden hose then blew remaining water out of heater core by mouth. Filled heater core with cleaning vinegar and let sit for 1 hour. Hooked up Lisle air flusher and ran it (100 PSI from small pancake compressor) with hose water to try to clear blockage in core. A small amount of silt came out first time into 5 gallon bucket. repeated the hose water flush 5 more times then reversed the hoses to backflush the opposite direction. Again, only a few small black flakes every flush. Redid the vinegar treatment and repeated the 5x flush never getting much more than a couple black specks out each time.Filled core with vinegar & let sit overnight. Redid whole procedure 5x each way getting a couple specks each time (a couple times I got a couple larger chunk/specks/flakes). Would this ever end?Next day I used ThoroFlush instead of Vinegar and repeated the same procedure 5x each way (going both directions is actually what works IMO). FINALLY, upon looking closely into each 5 gal clear water flush, I wasn't seeing any more minute specs. I probably repeated the 5 gallon flush & dump 30+ times in all.Removed my hoses and blew final air out of heater core. Used Funnel to refill heater core with coolant. Reattached inlet/outlet hoses back to water pump and thermostat. Used a coolant funnel fill kit like this to get air out of system https://www.amazon.com/dp/B01I40ZQWE?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_4And I GOT HEAT !!! Highly recommend the Lisle heater core flush tool as nothing else worked for me.Note: Using the Lisle gun requires you to use two hands & press on/off the air injection to cavitate the flow and knock particles free. Yes, I used 100 psi going in but didn't damage anything. Also, There is a lot of hooking and unhooking the worm clamps to reverse flow, add vinegar with funnel, etc. so I used a small battery driver to tighten, loosen the clamps each time - couldn't imagine doing it 30+ times with a screwdriver.

I was skeptical of spending this much for basically a garden water nozzle, but boy am I glad I did!! It fit perfectly for a variety of hose sizes, and the amount of pressure/flow was easily controlled. If you’re wondering how sturdy, durable, and well made it is, don’t because you will be surprised how heavy it is before you even open the package. Don’t waste your time on the cheap plastic or inserts when this is available!! You’ll be extremely happy when you get it!!UPDATE: I have now used this multiple times, on various vehicles, and it truly is great! I got a different one to see how it worked compared to this one, one that claimed to be better, and it didn’t. Love how this one has the slip on fit because it works great not having to place a screw tighten hose clamp on it!

I am a professional mechanic and have actually never had the opportunity to try this tool before until now. I have a Chev Blazer that I physically replaced the heater core on 10 years ago. Well a few months ago it became plugged and I was getting ready to spend a day removing the whole dash board again for the core replacement. I saw this tool on Amazon and figured I really had nothing to lose, but a lot to gain. By the way, you can isolate a bad core by feeling the temp in the two hoses at your heater if accessible. If operating correctly both will be hot when engine is at normal operating. If plugged, you will only have on hot (inlet) the other one (return) will be much cooler or just cold. Okay back to my use of the flush tool...I simply disconected my hoses at the heater at the firewall and install a length of 3/4 to the inlet and 5/8 and the outlet, then installed the Lisle flush tool in the end of the outlet hose and started the "back flush" process. I flushed it with water only in that direction for about 25 min until I had water flowing out at a good rate. So I reconnected my original hoses and topped off my at the coolant at the radiator ( newer cars at the reservoir ) with the engine running and was quite amazed and relieved that it restored my heater core to work like it was new again. I am still amazed at the simplicity of the tool and it's ability to safely clean such a difficult and labor intensive part on my truck. I did not even have to use a chemical additive. I am not so sure that a heater core with extreme sediment build up ( in engines where coolant is not used in a proper mix with water) would benefit from back flushing but it is worth a try, perhaps combining a radiator chemical flush solvent after the initial flushing of the core through the attached temporary outlet hose. After adding the additive let it sit in the core for at least a few hours (follow directions on specific product label) then flush again and see if the flow is restored. Good luck to you.....I hope your Lisle flush tool saves you the time and money it saved me!

Good design, easy to use and functions well.

Cleared up the clog in my heater core. I tried using just the water hose with full pressure from the city and that didn't work. 30 seconds with this and it blew out the crud that was clogging up my heater core. I'm now getting heat in my 01 Accord. I stated having the clog when I used a flushing solution in my radiator. I will not be doing so any more. Just drain it, use water to flush, drain it again, then add new coolant.

I bought this because I have a 2012 Ram 1500 and as everybody that has one will know the heat will stop working on the drivers side. I got this to flush the heater core with water and slight blasts of air and now I FINALLY have Heat!!! This saved me $1500 Bucks! All my Lisle Tools work Great and last! Highly recommend!!