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Hello,

Trying to see if this is a known issue. My Icon Purps coolant out of the vent tube at the top of the overflow reservoir. After 4-6 hours of running, half the coolant overflow bottle is gone. When I test the Bilge at startup, I sometimes see a red tinge liquid come out of the bilge outlet. Has anyone had that issue? Is that just the way it is with the Icon? My temperature never approaches hot (at least so far).

Any input would be appreciated.

Thanks!

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I have never needed to add coolant, and it usually stays level at mid-bottle (wherever the upper zip ties are).

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Interesting. I will talk to Vacaville.

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so far in 40 hours no need to add coolant...

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PROBLEM FOUND... The coolant leak is directly proportional to when/how often I use the heater... Leaks into the floor/bilge... Should be fixable. James found a pin hole in my heater core. Need a new core...

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Hi Michel, I had the same problem with my Icon. James found a hose fitting leading to the heater that was loose. Since he tightened this I've used the heater (even though already hot as blazes here in TX) and haven't had any coolant loss.

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Coolant service issue: I used cabin heater for maybe 20 min on my 4th flight (mostly to test it), added coolant before 5th flight to 1/4 level on overflow bottle. (First time coolant servicing by me as new owner) Now, about 3 hours later and it’s back to min line on overflow bottle. Seems I should look at cabin heater and check for evidence of a leak. Is this accessible? Any tips here? Thanks for post…

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If your heater core or feed lines are leaking (mine were), your water coming out of the bilge outlet will be tinted pink. Let me know!

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Thanks- heard add about gallon under floorboards so can see color out bilge hole. Will try later today, goal!

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I have never once added coolant- 700 hours, and I check it before every flight. I have never taken the cowling off either. Now that said, at a couple annuals I asked them to top it off.

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No pink tinge from bilge pump, but got some debris flushed out (good project)...added coolant to overflow bottle to 75% or so and will continue ops and see.

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If no coolant is found either in the firewall well or the bilge, the next likely culprit is consumption which would be obvious in your exhaust (white smoke if a lot, sweet smell if a little). Consumption would be an indication of a bad head gasket or crack. Let us know what you find out. Jimmy, our favorite A&P says that one tank per 100 hrs is common.

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Ok- thanks for data. To be sure I understand, one tank is referring to overflow bottle being full to black ty wrap or ?

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He meant from the FULL line near the tie wrap to the MIN line in 100 hrs.

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Thanks- got it

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Found leak- drip from bottom of outflow bottle at attachment point with silicon hose. Seems there is an inner and outer tube at attachment (hard to see much from back of engine), perhaps the inner has cracked. Have pics and now need to find what next.

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CJ, more than likely the zip tie that holds the hose to the bottle isn't tight enough. I would recommend to cut the zip tie off and replace it with another and try to get it a little tighter.

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Agreed! The hoses and silicon is in good shape. Got the correct ty wraps (now have a bag of 1000) and will try soon. Need to open up cowling to do a proper job, and get it tight enough. Will see - happy new year!

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What type and brand of coolant should be used replacing/topping off missing coolant in A5 Rotax 912 is?

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The two most available are Prestone Dexcool and shellzone Dexcool. I recommend getting the ready to use over the concentrate. It's much simpler.

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Thank you.

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Replaced Cable Tie with the maintenance manual part (I now own bag of 1000 of these-HA)...fixed! Glad to have feed to bounce thoughts off!