The car stays in the garage most of the winter. But that would be a good time to repair it.
Heat Riser Position
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 1,058
Likes: 27
From: Eastern North Carolina
Heat Riser Position
Hello Everyone, Can someone tell me on a 81 what is the normal position for the heat riser valve when no vacume is going to it? Mine is stuck and I'm trying to fiqure out if its stuck open or closed. The engine runs fine and idles smooth so I'm thinking its open. Thanks for any help at all.
Le Mans Master
Joined: Apr 2004
Posts: 7,106
Likes: 38
From: Newark DE
Once the motor warms up the heat riser valve opens and exhausr gases pass normally thru the exhaust on that side.
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Le Mans Master
Joined: Apr 2004
Posts: 7,106
Likes: 38
From: Newark DE
Tim
A heat riser valve stuck open will not cause a problem - simply that in cold conditions it takes longer for the motor to warm up.
On my '65 I replaced the heat riser valve with a spacer unit but the car only gets driven in the warmer months and is stored in the winter.
A heat riser valve stuck open will not cause a problem - simply that in cold conditions it takes longer for the motor to warm up.
On my '65 I replaced the heat riser valve with a spacer unit but the car only gets driven in the warmer months and is stored in the winter.
