BACKFIRING

[SPYDERGUY1]

In the past 2 days of riding to and from work, have heard a backfire , upon throttle de-celleration. The first I just dismissed as a whatever. Today sounded like a gunshot, scared the S*** out of me . Was also following a junker old truck . Anyone experience this type of thing or is it time to get it to the shop and looked at. Runs perfectly normal, no problems ????

 

[Chupaca]

Depends..!

What spyder what pipe..?? The likely culprit is the exhaust gaskets. The "Y" gaskets or a bit of tightening up. Depending on the model and year there are other points to check. Little more info would help...:thumbup:

 

[Bob Denman]

:agree: We have nowhere near enough information, to begin to help... :dontknow:
Year, make and model for starters...
How many miles are on it, and what modifications have you made (if any...)?

 

[wiredgeorge]

Anything that bolts to the cylinder head that has come loose such as exhaust or throttle body holder or un-sealed (gaskets) or any vacuum hose that is loose or compromised will cause the backfiring.

 

[billybovine]

You did not share with us what model and year of your Spyder. If your Spyder is a 2008 to 2012 GS/RS model it will be the right Y-pipe gasket has gone bad and needs to be replaced.

 

[Vader]

Some info

Unless he hasn't updated his profile, this is what he is ryding :
"2008 Yellow SM5"

 

[SPYDERGUY1]

Sorry, yes neglected the pertinent information. 2008 sm5 , stock exhaust etc, exhaust donuts replaced with in the last 8000 miles, not even, and it has 25000 miles, no performance mods ???

 

[coz]

Plugs and wires ?

Have you changed the spark plugs and plug wires yet? That's where I would start.