What was that
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Cruiser
Joined: Apr 2010
Posts: 163
Likes: 4
From: northern calif
What was that
So bike was hard to start last couple of days then yesterday got it started , Gave it a little throttle then BANG.and a Backfie WTH?
rolled it back into the garage and tried again this morning and started right up. Any ithoughts
rolled it back into the garage and tried again this morning and started right up. Any ithoughts
Last edited by tinsnips; Nov 4, 2019 at 05:57 PM.
Grand HDF Member
Joined: Jan 2012
Posts: 4,445
Likes: 2,822
From: Oklahoma
What was the ambient temperature for each start? Mine is not happy taking a throttle flick when cold, especially if I haven't ridden it in a week or longer. Was the cold idle rpm up where it should have been or was it running a little slow the time you had the backfire? How many miles, might it be due a fuel filter change? How much gas in the tank, is the level low enough to encourage over night condensation on the inside?
Last edited by btsom; Nov 4, 2019 at 06:17 PM.
Grand HDF Member
Joined: Aug 2011
Posts: 4,165
Likes: 4,239
From: U.S.A. Upstate N. Y.
What was that..
Possible intake gasket leaking.. Gas seeps past the gasket, acclimates in the combustion chamber, you hit the starter and the spark ignite's it, causing the explosion and backfire.. I would have it checked, do a cylinder leak down test..just for piece of mind.
Had a car blow the intake manifold right off he engine years ago, due to a bad gasket..
Had a car blow the intake manifold right off he engine years ago, due to a bad gasket..
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Club Member
Joined: Apr 2016
Posts: 11,458
Likes: 8,288
From: Inland NW
No ****!
What bike?
What engine? (like, does it have EFI?)
What ambient?
When was the last time you rode it?
Battery low?
Backfire out the pipe, fireball?
Or did it backfire through the intake?
Sooo many possibilities, and with no info at all from you we can only guess.
My guess is; it's an EFI bike, and had marginal power left in the battery, and with colder weather you got some gas fumes in the exhaust pipe when she sparked off for a sec.
Make sure air filter, etc are all good, charge the battery fully, and ride on. I would not let a little backfire worry you, unless something more significant happens.
What bike?
What engine? (like, does it have EFI?)
What ambient?
When was the last time you rode it?
Battery low?
Backfire out the pipe, fireball?
Or did it backfire through the intake?
Sooo many possibilities, and with no info at all from you we can only guess.
My guess is; it's an EFI bike, and had marginal power left in the battery, and with colder weather you got some gas fumes in the exhaust pipe when she sparked off for a sec.
Make sure air filter, etc are all good, charge the battery fully, and ride on. I would not let a little backfire worry you, unless something more significant happens.
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Road Warrior
Joined: Jul 2011
Posts: 1,934
Likes: 308
From: coastal sc
[QUOTE=NorthWestern;18654930]No ****!
What bike?
What engine? (like, does it have EFI?)
What ambient?
When was the last time you rode it?
Battery low?
Backfire out the pipe, fireball?
Or did it backfire through the intake?
Sooo many possibilities, and with no info at all from you we can only guess.
My guess is; it's an EFI bike, and had marginal power left in the battery, and with colder weather you got some gas fumes in the exhaust pipe when she sparked off for a sec.
Make sure air filter, etc are all good, charge the battery fully, and ride on. I would not let a little backfire worry you, unless something more significant happens.[/Q
What bike?
What engine? (like, does it have EFI?)
What ambient?
When was the last time you rode it?
Battery low?
Backfire out the pipe, fireball?
Or did it backfire through the intake?
Sooo many possibilities, and with no info at all from you we can only guess.
My guess is; it's an EFI bike, and had marginal power left in the battery, and with colder weather you got some gas fumes in the exhaust pipe when she sparked off for a sec.
Make sure air filter, etc are all good, charge the battery fully, and ride on. I would not let a little backfire worry you, unless something more significant happens.[/Q