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· Registered
24 Posts
Discussion Starter · #1 ·
I discovered that my heat riser on my 1967 Chevelle Malibu is broke. What if any performance issues will I have until I replace it. Also how difficult is it to replace?

Thanks for any/all input:yes:

· Premium Member
723 Posts
Heat riser restricts exhaust flow from manifold when engine is cold.
Is supposed to help heat the choke spring quicker.
When you say "broke"...I'm assuming it's "broke" in the open position.This could/would cause the choke to stay on longer than necessary,resulting in a "rich" condition after the engine is at operating temp.
You don't state as to what engine/carb combo you have...
Manual/automatic choke?

Changing it depends on how crusty your exhaust is!
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