Radiator losing water but reservoir still the same level

**EVO-V** · January 6th, 2014 04:25 PM

Yes, but the coolant component will not evaporate until 179C. So what happens is that the radiator could be clogged, and it will build up pressure and push the coolant through the overflow pipe into the reservoir.

If the pressure is excessive, the reservoir fills up, a pressure cap somewhere pops, and then pushes out the coolant out of the reservoir but doesn't draw anything back in. That can explain the loss in the radiator while having a full reservoir.

**mark_celiz09** · January 23rd, 2014 05:56 PM

Bought a surplus rad cap for 120 pesos. So far, ung dating takbo ko ng mga 10 to 15km na may nababawas na tubig sa rad agad ngayon parang ala na. Puno pa rin nung last na nacheck ko. Tumakbo ako ng mga 50km last saturday, and mukang ok pa din siya. Sana un na makaresolve ng problema ko sa waterloss. Just sharing.

**EVO-V** · January 28th, 2014 02:21 PM

Likely when you opened your cap, you let out air, and then resealed your system.

The radiator overflow is normally the highest point in the loop and it will let air out first and then draw back coolant from the reservoir to replace the volume lost.

**Red Advent 04** · January 28th, 2014 02:25 PM

Habol sa tanung ng nauna nating ka tsikoteer..bro hindi ba tumataas temperature mo nung nag babawas kamu ng tubig ang radiator mo?

**mark_celiz09** · January 29th, 2014 09:23 AM

Originally Posted by Red Advent 04

Habol sa tanung ng nauna nating ka tsikoteer..bro hindi ba tumataas temperature mo nung nag babawas kamu ng tubig ang radiator mo?

Nope, di naman tumataas kasi di naman sobra ung bawas sa radiator ko. mga isang basong tubig lang.

**lowslowbenz** · January 29th, 2014 02:15 PM

Originally Posted by mark_celiz09

Bought a surplus rad cap for 120 pesos. So far, ung dating takbo ko ng mga 10 to 15km na may nababawas na tubig sa rad agad ngayon parang ala na.

If that solved your problem, then buy a brand new OEM radiator cap.

**mark_celiz09** · January 29th, 2014 04:44 PM

Originally Posted by lowslowbenz

If that solved your problem, then buy a brand new OEM radiator cap.

I think I'm good with the surplus already.

**EVO-V** · February 4th, 2014 06:14 PM

A new cap is only P150 or so. I don't get it why you had to buy a surplus cap.

**mark_celiz09** · February 8th, 2014 05:22 PM

Originally Posted by EVO-V

A new cap is only P150 or so. I don't get it why you had to buy a surplus cap.

Because the cap I replaced has been just recently replaced.

Circuit brand. But I notice that it is not getting water from the reservoir that's why I bought a surplus. I think I can't get a OEM or Denso cap for 150.