Ted and Barry,
Some of the 78 and early 79 Spitfires did not have the diverter valve (also
known as the gulp valve). These cars had the air pump going into a single
port on the exhaust manifold just above the converter.
Atwell
'79 Spitfire without a diverter
At 09:39 AM 6/14/99 -0700, Barry Schwartz wrote:
>
>>When I got my '80, the air pump hose was disconnected, and when I hooked
>>it back up, I got the same backfire.
>*********************************************
>Guys (and gals)
>If you get severe backfire right when you let off the gas (with exhaust air
>injected vehicles), check the vacuum operated diverter valve. The diverter
>valve controls the air flow to the air rail entering the exhaust manifold.
>If it malfunctions, you'll get a nasty backfire when you let off the gas.
>Sometimes even between shifts if your really stepping on the accelerator.
>
>Barry Schwartz (San Diego) bschwart@pacbell.net
>
>72 FI, V6 Spitfire (daily driver)
>70 GT6+ (when I don't drive the Spit)
>70 Spitfire (long term project)
>
>
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