David: I'd check the timing first, only because it's the easiest thing to
check. But then I'd suspect a rich mixture if it's afterfiring (out the
exhaust) or a lean mixture if it's "backfiring" (out the carbs). Do you
have a colortune? I love the colortune, though some seem not to.
Geoff Branch
----- Original Message -----
From <SDOliner at aol.com>
To: <spridgets@autox.team.net>
Sent: Monday, July 26, 2004 10:08 PM
Subject: back firing on acceleration
> 1275 engine, 276 cam, Mallory dual points, stock SUs, really free flow
> exhaust.
> Wicked backfire with full throttle.
> I like the way it sounds, but feels like I am losing power.
> Where should I look first?
> Carbs too rich? Timing?
>
> David Oliner
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