Posted 05 January 2012 - 06:00 PM
Ive done my homework and checking... My idle sits at about 2300 rpm at normal idle speed. I've messed with the idle screw on top of the throttle body, when it is all the way down the idle goes down slightly. I've put a new air regulator on. I've replaced all the vaccuum hoses I could see and find. I've replaced the throttle position sensor. Checked out the inside of the AFM, it's clean there. I've replaced the fuel pressure regulator and adjusted it to the right pressure. What next is there to do? Should I try and retard the timing through the distributor. What else can I do?
Posted 05 January 2012 - 06:38 PM
Have you checked the BCDD? They get stuck sometimes. On the bottom of the throttle body. I have found a leak there before by spraying carb cleaner around where it mounts to the intake. The idle speed will change.
The idle speed is mainly controlled by how much air is allowed in to the intake manifold. If the air gets past the throttle body but still moves the AFM flapper, you'll get a high idle, more air plus more fuel. That's what the idle adjustment does. A small vacuum leak can raise your idle too, a big one leans everything out and the engine dies. If you get everything sealed up right, you should be able to kill the engine by closing the idle speed screw.
Posted 05 January 2012 - 07:29 PM
Posted 05 January 2012 - 11:09 PM
Posted 05 January 2012 - 11:15 PM
Posted 06 January 2012 - 09:51 AM
Engine speed is controlled by air allowed in. If you can't choke the engine speed down to nothing, you have uncontrolled air getting in. Intake leaks are hard to find sometimes.
Edited by NewZed, 06 January 2012 - 09:53 AM.
Posted 06 January 2012 - 02:45 PM
Posted 06 January 2012 - 06:08 PM
Posted 07 January 2012 - 06:29 AM
Posted 11 January 2012 - 09:50 AM
Posted 27 January 2012 - 08:21 PM
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