Re: [alfa] Spica backfire on decel

[hagen_jason@xxxxxxxxxxx]

I think it may be close to impossible to eliminate all backfiring on the Spica system.  However, here are a couple of additional things that may help....
- Make sure that all the throttle plates are aligned and that they COMPLETELY close when you foot is off the throttle.  If they are open at all, you will still get backfiring.  Also, make sure you are not dragging your foot even slightly on the throttle during decel, or the plates will be open and backfiring will take place.
- Clean plugs, check ignition timing.
--
Jason Hagen 
Chicago, IL 
'73 Spider 
'95 164Q


-------------- Original message -------------- 

> I could probably look this up but I'm lazy and don't feel like digging the 
> books out. My Spica is all set up properly, starts and runs great. The 
> microswitch is working but - I get backfiring on deceleration starting at 
> around 2200 to 2300 rpm. If I remember correctly the fuel isn't supposed to 
> kick back on until around 1500 rpm or thereabouts. 
> 
> Is there an adjustment for this? 
> 
> Paul Irvine - Antioch CA 
> Project Alfa - http://project-alfa.home.comcast.net/ 
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