'75 L-Jet running rich "Smog Test Blues", OK I should of started this thread 3 days ago |
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'75 L-Jet running rich "Smog Test Blues", OK I should of started this thread 3 days ago |
tabs914 |
Oct 8 2008, 12:35 AM
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#1
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Advertise Your Drive... Group: Members Posts: 105 Joined: 17-January 05 From: Gresham, Oregon Member No.: 3,456 Region Association: None |
Gang, I need your help. I started out just running rich. So I made a very small adjustment to the AFM to lean it out. I also did a tune-up (cap, rotor, plugs and wires) No points (Compufire). I also replaced my ol faithful Bosch Blue Coil (12 years old) with the best I could find in a day (Standard Brand). Now I am running rich and with a nice case of hesitation and blubbering. Idle is good, but the minute I pull on the throttle a slight decrease on the RPM for a second then it picks up and blubbers at what ever point I pull the throttle up to. It does it at all RPM's. I haven't got on any stretch of road long enough to see if I can feel any hunting or jerking...I am almost certain that it would. I have tried to find posts on the site and I can't find any with my symptoms.
I checked all the vacuum lines for leaks.(cut old ends off and reattached) Checked the Pressure Regulator, vacuum side for leaks. Cleaned the throttle body (also made a rubber gasket for it) Cleaned the throttle switch (removed all the carbon deposits on the points.) Checked the AFM Flap for any damage (have you checked the price on these babies? Ouch!) I am at a loss...any advice you might have would greatly be appreciated. Thanks in advance... (IMG:style_emoticons/default/blink.gif) |
tabs914 |
Oct 8 2008, 09:56 AM
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#2
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Advertise Your Drive... Group: Members Posts: 105 Joined: 17-January 05 From: Gresham, Oregon Member No.: 3,456 Region Association: None |
now remember I didn't have the blubbering before the tune-up, coil and one turn left on the AFM dial...you really think that it just died durring the procedure ($500-$1200 gamble). Any other areas I could check?
Thanks for all your help... |
zonedoubt |
Oct 8 2008, 12:48 PM
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#3
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Canadian Member Group: Members Posts: 668 Joined: 14-May 03 From: Vancouver, BC Member No.: 696 Region Association: Canada |
Check timing and dwell? Temperature sensor?
Before I did my e-test, I leaned out the AFM while waiting in line for the test. Passed with flying colours and then turned the screw back to where it was before. I've also been troubleshooting a "stumbling" issue under load. I have a known good AFM to swap out and will also test the pressure regulator. |
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