'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) |
Brando |
Oct 9 2008, 12:56 PM
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#2
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BUY MY SPARE KIDNEY!!! Group: Members Posts: 3,935 Joined: 29-August 04 From: Santa Ana, CA Member No.: 2,648 Region Association: Southern California |
Replace that crap coil (as Cap'n said) with a good bosch blue.
If you get a new AFM, they have to be calibrated for the engine they are working with. To do this, you need a flexible gas analyzer and to adjust after driving. Also, do you have the Smog pump equipment, EGR and a WORKING converter on the car? L-Jet car I had to get past smog (912E) only needed a tuneup and a new converter to pass. My checklist for pre-smog on a 1.8 or 2.0 with L-jet: x) Valves adjusted? x) Vacuum leaks? x) Cap/Rotor/Plugs/Coil in great shape? x) Timing/Dwell set to stock? I believe it's 8.5º ± 1º at idle with the engine warm, vacuum hoses to the distributor plugged and disconnected from distributor. x) Distributor advance/retard working correctly? x) Exhaust leaks? x) Converter in good enough shape? That should about do it. |
tabs914 |
Oct 9 2008, 05:34 PM
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#3
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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 |
Here is the check list from Brando... checked off a few but didnt understand a couple...can you clearify for me please...
x) Valves adjusted? Check x) Vacuum leaks? Check x) Cap/Rotor/Plugs/Coil in great shape? Check x) Timing/Dwell set to stock? I believe it's 8.5º ± 1º at idle with the engine warm, Check vacuum hoses to the distributor plugged and disconnected from distributor. Plug on the manifold as well? x) Distributor advance/retard working correctly? ? x) Exhaust leaks? Check x) Converter in good enough shape? ? Will a AFM from a vw vanagon work? I just thought for $20.00 at a "U"Pull It...it wouldnt hurt to try. Thanks for all your help!!! (IMG:style_emoticons/default/piratenanner.gif) |
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