Bad Shutter Valve Causes Rough Idle/No Idle; Rotary Rough Idle - Mazda 1983 RX7 Service Manual

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TECHNICAL INFORMATION TIP

ROTARY ROUGH IDLE

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BAD SHUTTER VALVE CAUSES ROUGH IDLE/NO IDLE

A bad shutter valve may cause a rough or no idle on 1982-85
Mazda RX-7 models. To test the shutter valve, remove the hose from the
valve (it's located below the carburetor) and check for vacuum. If
there is vacuum at idle, the shutter valve is bad and should be
replaced.
Another thing to check that may be causing your idle problems is
the vacuum hose that leads from the carburetor to the AA valve. This
large hose may be burned or split at the bend in the hose near the
intake manifold and can introduce a large vacuum leak if it's leaking.
Courtesy of Import Service Magazine
with thanks to:
Bill Jasper
Charles Levy Motor Company
Columbus, Georgia
REFERENCE NUMBER:
NOTE: This information has been obtained from sources generally
believed to be reliable. Use your own judgment before relying
on this data. Neither the suppliers of these Technical
Information Tips, nor Mitchell International, guarantees or
assumes responsibility for data accuracy or completeness, nor
is liability assumed by the suppliers of these Technical
Information Tips or Mitchell International for any claims or
damages resulting from the use of this information.
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BAD SHUTTER VALVE CAUSES ROUGH IDLE/NO IDLE
For www.iluvmyrx7.com
Copyright © 1998 Mitchell Repair Information Company, LLC
Saturday, September 08, 2001 10:03AM
1982-85
Mazda
RX-7
June 1993
MAZ0518AP
Article Text
1983 Mazda RX7