Radiator not siphoning coolant from reservoir


	Auto Repair Home	SEARCH POSTS	WHO'S ONLINE	LOG IN

Automotive Repair

Car Troubleshooting Topics
  Car Troubleshooting
  Engine Troubleshooting
  Engine Fault Codes
  Electrical and Wiring
  Transmission Problems

Car Repair Topics
  Car Making Noises
  Car Stereo Repair
  Heating or AC Issues
  Motorcycles and ATVs
  Tricks of the Trade
  Truck Repair Advice

Site Options:
  Login
  Sign up here!

Latest Forum Post

Lukewarm Heat............

New antifreeze reverse flush heater core...

multiple warning lights

2013 GMC Terrain 130,000 miles 4 cylinde...

2014 Nissan Sentra Shaking

Car recently started shaking when accele...

Buy Flualprazolam Powder Online Whatsapp: +1(424) 328-1086

N/A

1989 toyota pickup 3.0 crank no start

I have a 1989 toyota pickup 3.0 crank no...

Strut spring orientation and strut mount tension nut

2017 Nissan rogue awd 2.5 L Put in Monro...

Transmission stuck in part, I have tried everything

So I'm working on my elderly fathers 201...

2017 dodge journey LED headlights on/off randomly

Year of vehicle 2017 Make of vehicle dod...

Kia Soul starter replacement issues!

Okay so my car is a 2010 Kia soul 2.0 en...

Please Help - Knock sound & engine fail

Hi all, Hoping to get some insight and ...

Radiator not siphoning coolant from reservoir

Sign up here!

Search for (search options)

Auto Repair Home>> Automotive Repair>> Car Troubleshooting

tnora
User
tnora profile image

Feb 5, 2021, 3:34 AM

Post #1 of 3 (793 views)

Radiator not siphoning coolant from reservoir	Sign In

Hello: I'm the original owner of a 1991 Mits Montero 5speed 4x4, 104,000 original miles. The coolant reservoir is completely full. This fluid did not flow back to the radiator. No engine lights came on. Dashboard temp gauge was in normal range during my drive. I checked radiator fluid before my drive and it was full and the reservoir was empty. New thermostat and upper radiator hose new with less than 1000 miles. After my drive, when I discovered the problem, the rad cap was tight and pressure relief sound was heard when I opened it while cold. No signs of leaks anywhere, just fluid didn’t siphon back to rad from reservoir.

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Feb 5, 2021, 4:42 AM

Post #2 of 3 (790 views)

Re: Radiator not siphoning coolant from reservoir	Sign In

That would mean you either have a bad cap or there is a leak in the system pulling air.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Feb 5, 2021, 5:46 AM

Post #3 of 3 (784 views)

Re: Radiator not siphoning coolant from reservoir	Sign In

The tube to the reservoir from an on radiator cap matters big time! If that or any reason it sucks back air tank stays full, radiator and engine gets air. Find and fix that now or wreck an engine over it. HT said CAP is responsible to allow air back but also stop and hold pressure as coolant expands and may not work. You can test it or go new but need to know why this is happening or blow this engine with air in it,

T
(edit) It's not "Siphoning" coolant back the pressure drops when it cools it draws it back. Just know wrong word used)

(This post was edited by Tom Greenleaf on Feb 5, 2021, 5:51 AM)

Search for (options) Privacy Sitemap