Bleeding the Cooling System ???

[Rolffe-of-Six]

I was speaking with a dealer about installing a digital temperature gauge where the sensor/sending unit is inserted into the upper radiator hose (see attached pic). The dealer said they could do it but that the cooling system would have to be bled to ensure no air was in the system. Bootom line: 3 hours labor charge. never heard of bleeding a cooling system. Does this sound reasonable or are they wanting to take me for a ride?

 

[billrob71]

Three hours to do the whole job or just to purge the system?

 

[cuznjohn]

cooling system

most cars are pretty easy to bleed, i have never done a bike. but i had a 98 subaru outback that was so hard to get the air out that it would drive me nuts.

 

[jerpinoy]

Wow 3 hour to bleed the system is that including coffee breaks?:roflblack::roflblack:

 

[jcthorne]

Any vehicle where the fill/cap cannot be located at the high point of the system or where the radiator and engine are separated such that one cannot drain the other will require a very different procedure to fill. There is a tool called an air-lift for filling such cooling systems. Many motorcycles and some cars require the use of this tool. Essentially it pulls a vacuum on the cooling system and then sucks the coolant in to fill the voided space. Leaving no air in the system. Got very familiar with the tool doing cooling changes on my Ford GT. It adds about 30 minutes to the normal flush n fill time.

 

[M109Dreamer]

Any vehicle where the fill/cap cannot be located at the high point of the system or where the radiator and engine are separated such that one cannot drain the other will require a very different procedure to fill. There is a tool called an air-lift for filling such cooling systems. Many motorcycles and some cars require the use of this tool. Essentially it pulls a vacuum on the cooling system and then sucks the coolant in to fill the voided space. Leaving no air in the system. Got very familiar with the tool doing cooling changes on my Ford GT. It adds about 30 minutes to the normal flush n fill time.

Sounds similar to the brake flush system they use now on cars.....

 

[jcthorne]

Sounds similar to the brake flush system they use now on cars.....

Yes it is. Mighty Vac makes a similar tool for the cooling system but many think the air lift works better.

 

[Bob Ledford]

Some one correct me if I am wrong!

I have been reading on the forum that there is a digital temperature gage already in the Spyder you just have to disconnect both analog Gage's and it pops up on the display screen!

 

[OldCowboy]

Some one correct me if I am wrong!

I have been reading on the forum that there is a digital temperature gage already in the Spyder you just have to disconnect both analog Gage's and it pops up on the display screen!

You are correct, however the digital temp gauge simply displays a series of bars, from cold to hot. AFAIK, there is no direct correlation between a given bar and the coolant temp. If you want the exact temp displayed on a digital gauge, you'll have to go aftermarket.