 Help me make it to Oktennerfest! (under my own power), Engine #4 backfire/popping/ Cam & Carbs |
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| Garland |
 Sep 10 2016, 08:43 AM
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#1
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Restoration Fanatic  Group: Members Posts: 1,428 Joined: 8-January 04 From: ......Michigan...... Member No.: 1,535 Region Association: Upper MidWest 
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Trying to get #4 to stop popping from the carb. I have checked the timing, dist drive gear, intake for leaks, swapped plug wire, replaced spark plug, adjusted and balanced carbs, plugged and unpluged the vacuum port on that carb barrel. ( I leave these plugged and have no use for them) And done a valve adjustment.
Heres what Im wondering. My drive gear looks a bit off from the pictures here and in the book. But if I lift and drop, right or left its way off. The location of #1 on the cap is seen in the picture below. The engine starts right up, and runs well. Yet the popping from # 4 is killing me., If i adjust the timing it seems that I can retard it to mostly exhaust backfire. The #4 plug hole is a pit short in depth, at least it looks that way, but the plug is seating and appears to be no leakage. I think it was slightly miss threaded in the past. I am concerned that somehow I am missing the correct distributor alignment with the gear, or the gear is off, or I'm clocked wrong. Or the spark plug hole is not sealing. I have put about 100 miles on the engine, with it running like this. Seems a little rough, while cruising along at 70 almost like a intermittent miss whit that cab popping. What could be the cause of this? Any ideas of what now? Could the items Im addressing be the cause? I am going to drive this car to Okteenerfest. Mallory unilite installed. (silver tape marks #1)    |
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| Garland |
Sep 10 2016, 10:49 AM
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#2
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Restoration Fanatic Group: Members Posts: 1,428 Joined: 8-January 04 From: ......Michigan...... Member No.: 1,535 Region Association: Upper MidWest
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I've checked mine over it it has a lot of slop. Also the joints slide right and left which engages the linkages at different times. One last note, the popping happens at idle or any RPM. . Hot cold anytime.
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| Mark Henry |
Sep 10 2016, 11:30 AM
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#3
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
QUOTE(Garland @ Sep 10 2016, 12:49 PM)  I've checked mine over it it has a lot of slop. Also the joints slide right and left which engages the linkages at different times. One last note, the popping happens at idle or any RPM. . Hot cold anytime. Yep... (IMG:style_emoticons/default/biggrin.gif) |
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Posts in this topic
Garland Help me make it to Oktennerfest! (under my own power) Sep 10 2016, 08:43 AM
Mark Henry You have the drive 180 off but that won't caus... Sep 10 2016, 09:52 AM Garland I'm going to try to balance the carbs out agai... Sep 10 2016, 10:00 AM Mark Henry Look again I wasn't done editing :D Sep 10 2016, 10:01 AM Mark Henry Looking at your linkage, well to be kind I'll ... Sep 10 2016, 10:06 AM Garland OK, just to be sure I'm following a proper pro... Sep 10 2016, 10:07 AM rhodyguy If you turn the idle air mixture screw on #4 in un... Sep 10 2016, 10:12 AM Garland Got it. I'll post my results thank you. And I... Sep 10 2016, 10:22 AM Mark Henry This is the centerpull linkage in the T4 in my bug... Sep 10 2016, 10:33 AM
Mark Henry If you don't have the fab skills for a center ... Sep 10 2016, 11:47 AM rhodyguy get the new linkage. you can fight it til you... Sep 10 2016, 12:03 PM Mblizzard I have done the fight. The CFR linkage is the way ... Sep 10 2016, 11:24 PM
Garland Still going to go with the new linkage soon. But f... Sep 11 2016, 01:00 PM |
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