Occasional backfiring - Page 4 - Suzuki Burgman Forum
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Old 12-21-2007, 09:29 PM   #31 (permalink)
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................but if the plug wire is not seated, wouldn't that cause a mis-fire rather than a backfire?
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Old 12-21-2007, 09:52 PM   #32 (permalink)
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Quote:
Originally Posted by gunnphiter

It was also determined that single cylinder engines will do this quite normally.
---
Yes, the 650 have two cylinders. What's your point?
Waldo must have thought your first statement implied that you thought the 650 has one cylinder. The topic is about a 650 (2 cylinders) and you talked about a single cylinder (a 400).
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Old 12-23-2007, 07:54 AM   #33 (permalink)
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Quote:
................but if the plug wire is not seated, wouldn't that cause a mis-fire rather than a backfire?

A `misfire` is the cause of a `backfire` due to accumulated fuel not being ignited correctly.
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Old 12-23-2007, 08:25 AM   #34 (permalink)
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Yup, the 650 is a parallel twin.
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Old 12-23-2007, 12:31 PM   #35 (permalink)
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A `misfire` is the cause of a `backfire` due to accumulated fuel not being ignited correctly.[/quote]

Hummmmm?
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Old 12-28-2007, 04:32 AM   #36 (permalink)
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Default Misfire / backfire

Quote:
A `misfire` is the cause of a `backfire` due to accumulated fuel not being ignited correctly.
Hummmmm?[/quote]

Does `Hummmmm?` mean that you do not understand the difference between the two and would like me to explain the difference in more detail.
Or, are you just having a think about it ?
They are two distinctively different conditions.
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Old 12-28-2007, 09:38 AM   #37 (permalink)
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Yep, I'm curious to know your definition of 'backfire' and a 'misfire'.
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Old 12-28-2007, 11:11 AM   #38 (permalink)
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Sounds like we've got 2 different "English" versions, like the words **** from the Simon Evans days!
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Old 12-28-2007, 11:46 AM   #39 (permalink)
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.....................or is someone being a twit.
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Old 12-28-2007, 01:35 PM   #40 (permalink)
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Default Misfire / backfire

Quote:
Yep, I'm curious to know your definition of 'backfire' and a 'misfire'.
I`m sure you will allow for differences in transatlantic terminology.

A `Misfire`
is an event that occurs within the combustion chamber of an internal combustion engine when the fuel/air mixture fails to be ignited by the spark plug (in the case of the Burgman we know that this is due to a lose plug cap). A `Misfire` produces no sound.
Do not confuse with `Detonation` of the fuel / air mixture which is also an unwanted synario that does produce a sound. (I would be more than willing to define detonation, its causes and effects, should you wish me to).

A `Backfire`
is an event that occurs within the exhaust system of an internal combustion engine when the accumulated unburnt fuel / air mixture that has passed into it resulting from the `Misfire` is ignited as the ignition function is restored to the spark plug. The time interval involved is small but sufficient to allow enough fuel/air mix to create a small explosion, which in a modern well silenced exhaust system can be barely audible. The `Backfire` may occur as a single sound or repeated small popping noises.

It is the same principle that applies to engines fitted with carbs or injectors.

I hope this will satisfy your curiosity.

Lets not forget the original reason for the start of this topic.
The subject has come up before and the answer is the same, `ensure your plug caps are fitted properly`

Regards,

Banana


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