Engine cuts out and stalls while driving.
Burning Brakes
Joined: Jun 2006
Posts: 1,148
Likes: 5
From: South Dakota
Have you ever seen a carb fire? There are two valves that can be open. If the fuel is not burn and ignites at just the right time in the exhaust, or by an intermittant spark, it can travel into the intake. YOu introduce raw fuel/air into the cumbustion chamber it doesn't burn and then you pump that raw fuel/air into the exhaust a the same time you are bringing raw fuel/air into the combustion chamber again. At this point you have a complete path of unburned raw fuel/air mixture in the exhaust, combustion chamber and intake at the same time. If that fuel mixture happens to ignite when both valves are open, you have the scenerio I just described.
If you recognize basic Otto cycle theory, it isn't too hard to realize.
If you recognize basic Otto cycle theory, it isn't too hard to realize.
Last edited by builder; Feb 11, 2010 at 11:03 AM.
Thread Starter
Melting Slicks
Joined: Sep 2004
Posts: 2,412
Likes: 3
Have you ever seen a carb fire? There are two valves that can be open. If the fuel is not burn and ignites at just the right time in the exhaust, or by an intermittant spark, it can travel into the intake. YOu introduce raw fuel/air into the cumbustion chamber it doesn't burn and then you pump that raw fuel/air into the exhaust a the same time you are bringing raw fuel/air into the combustion chamber again. At this point you have a complete path of unburned raw fuel/air mixture in the exhaust, combustion chamber and intake at the same time. If that fuel mixture happens to ignite when both valves are open, you have the scenerio I just described.
If you recognize basic Otto cycle theory, it isn't too hard to realize.
If you recognize basic Otto cycle theory, it isn't too hard to realize.
Case in point, intake fire and exhaust fire are caused by two different things.
