idle air controler pintle manual adjustment

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idle air controler pintle manual adjustment

Postby flatbill » Sun Nov 12, 2017 11:15 am

I have had an MSII running a TBI on my '56 Desoto motor and am now working on getting an MSIII system with port injection, sequential fuel and spark. I now have a 4 bbl throttle body that uses the O ring 2 mounting screw 4 wire IAC. I bought a new IAC. Now I find that the pintle is extended too far to install it in the throttle body. I suppose it is possible to manually retract the pintle. I have tried rotating the pintle tip but I am leery of turning it very hard. It does not rotate freely. How much force is needed and in which direction to retract the pintle? Thanks. Billk
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Re: idle air controler pintle manual adjustment

Postby billr » Sun Nov 12, 2017 6:01 pm

There is no easy way to manually retract those pintles. Your best bet is to connect the IAC and use "test mode" to move it. I have been able to move pintles in by wiggling them around in a circular motion, like stirring a drink straw, while pushing in gently. They do not just screw in, don't try to force it. In fact, it should not rotate at all.
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