2-18
BF135A•BF150A
Throttle link and/or cable misadjust-
ed.
Engine starts, but stalls
soon. Idle speed is not
stable or stalls.
Adjust the throttle link and/or cable
(P. 3-26).
Throttle shaft not move smoothly. Check the throttle body and clean if
necessary (P. 5-95).
Idle control system faulty. Perform idle control system trouble-
shooting (P. 5-93).
Secondary air being sucked.
• Loosely tightened IAC valve, dam-
aged gasket
• Loosely tightened throttle body,
damaged seal ring
• Loosely tightened intake manifold,
damaged seal ring
• Damaged fuel injector seal ring
• Loosely tightened injector base,
damaged gasket
• Retighten the IAC valve. Replace
the gasket if damaged (P. 5-95).
• Retighten the throttle body.
Replace the seal ring if damaged
(P. 5-132).
• Retighten the intake manifold (P.
5-133).
• Replace the fuel injector O-ring if
damaged (P. 5-136).
• Retighten the injector base.
Replace the gasket if damaged
(P. 5-139).
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