Author Topic: Coolant does not come back  (Read 238 times)

shemax

  • Novice
  • *
  • Posts: 15
    • View Profile
    • Email
Coolant does not come back
« on: July 20, 2020, 01:13:42 AM »
Hello,

cannot understand why the coolant arrive in the expansion but does not come back anymore in the radiator.......... So radiator empty and expansion is full ......

Also changed che cap to try.

 :(

bad-mod

  • Intermediate
  • ***
  • Posts: 119
    • View Profile
    • Email
Re: Coolant does not come back
« Reply #1 on: July 20, 2020, 11:25:12 AM »
I am not sure maybe there is a leak on the Radiator side ? The low pressure that pulls the fluid back might be dwindling.

Sent from my SM-N960F using Tapatalk

16 SE-R Factory
91 DR 350 =>450
76 FLH Shovelhead

shemax

  • Novice
  • *
  • Posts: 15
    • View Profile
    • Email
Re: Coolant does not come back
« Reply #2 on: July 20, 2020, 11:49:32 AM »
I am not sure maybe there is a leak on the Radiator side ? The low pressure that pulls the fluid back might be dwindling.

Sent from my SM-N960F using Tapatalk

Radiator is does not leak in the flor. Maybe leaks but I cannot see it ? Possible ?

JL4049

  • Novice
  • *
  • Posts: 13
    • View Profile
    • Email
Re: Coolant does not come back
« Reply #3 on: July 21, 2020, 02:35:30 PM »
The coolant overflow pipe from the radiator neck to the expansion tank takes a pretty convoluted path. Yours hasn't got a kink in it somewhere has it? Particularly where it runs across behind the fuel tank and comes through to the left side cover?

bad-mod

  • Intermediate
  • ***
  • Posts: 119
    • View Profile
    • Email
Re: Coolant does not come back
« Reply #4 on: July 21, 2020, 08:39:07 PM »
The coolant overflow pipe from the radiator neck to the expansion tank takes a pretty convoluted path. Yours hasn't got a kink in it somewhere has it? Particularly where it runs across behind the fuel tank and comes through to the left side cover?
You're on to it

Sent from my SM-N960F using Tapatalk

16 SE-R Factory
91 DR 350 =>450
76 FLH Shovelhead

shemax

  • Novice
  • *
  • Posts: 15
    • View Profile
    • Email
Re: Coolant does not come back
« Reply #5 on: July 22, 2020, 12:02:30 AM »
The coolant overflow pipe from the radiator neck to the expansion tank takes a pretty convoluted path. Yours hasn't got a kink in it somewhere has it? Particularly where it runs across behind the fuel tank and comes through to the left side cover?

Hello,
yes I checked the tube is clean and free.
The tube has no chokes.

 :(

bad-mod

  • Intermediate
  • ***
  • Posts: 119
    • View Profile
    • Email
Re: Coolant does not come back
« Reply #6 on: July 22, 2020, 01:28:46 AM »
Oh ok. I would then look at the cap. Or a leak of some sort. It relies on the vaccine created on cooling so either the cap is not letting it return or there is no vacuum to suck it back

Sent from my SM-N960F using Tapatalk

16 SE-R Factory
91 DR 350 =>450
76 FLH Shovelhead

shemax

  • Novice
  • *
  • Posts: 15
    • View Profile
    • Email
Re: Coolant does not come back
« Reply #7 on: July 24, 2020, 12:45:29 AM »
They told me is the cylinder head gasket

I will let you know.