Burping

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Topless
Posts: 48
Joined: Mon Apr 20, 2020 12:03 pm
Your car is a: 1979 Fiat 124 Spider 2000

Burping

Post by Topless »

Is it proper form to burp from the coolent cap behind the head near the distributor? This appears to be the highest point in the lines. ie can you leave it open and run the car for 15 mins?
18Fiatsandcounting
Posts: 3798
Joined: Fri Mar 15, 2019 11:23 pm
Your car is a: 1969 and 1971 124 spiders
Location: San Francisco Bay Area

Re: Burping

Post by 18Fiatsandcounting »

It is the highest point in the cooling system, but if you leave it open with the engine running, coolant is likely to start spurting out. Now if you could find and attach a gizmo that would let air out, but not coolant, that would be cool. So to speak.

Try this:
Fill the cooling system as best you can, and close everything up.
Make sure the coolant reservoir is about 2/3 full, and mark the level on the outside of the bottle with a sharpie pen or the like.
Warm up the engine and watch the temperature.
If it goes much over 200 oF, shut it back down and wait for it to cool.
When totally cool, see where the coolant level is on the reservoir.
If it hasn't changed, the system is not pulling coolant from the reservoir to bleed the system as it should.

If that's the case, a faulty radiator cap (or the wrong size) is often the cause.

-Bryan
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