 #3 plug is black... |
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| yellow75 |
 Oct 20 2016, 03:59 PM
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#1
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Member  Group: Members Posts: 88 Joined: 1-October 16 From: pittsburgh Member No.: 20,452 Region Association: None  |
pulled the plugs on my new to me 75 1.8 with carbs today. 1,2,&4 look good grey in the center (3 electrode plugs) black around the sides. # 3 was totally black. it was idling rough so I pulled one plug wire at a time to see the difference it made. All but #3 made a difference. When I pulled #3 there was no difference at all. It has an electronic fired dizzy in it as well. Cap and rotor are new. What ya think?
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| yeahmag |
Oct 21 2016, 05:06 PM
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#2
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Advanced Member Group: Members Posts: 2,422 Joined: 18-April 05 From: Pasadena, CA Member No.: 3,946 Region Association: Southern California 
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I'm a Dellorto guy, but I seem to remember 55-60. I think it would be telling if you compare barrel #3 to ANY of the other three and see what's different.
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Posts in this topic
yellow75 #3 plug is black... Oct 20 2016, 03:59 PM
yeahmag Was it oily and black or sooty and black? Got a pi... Oct 20 2016, 05:17 PM plays with cars Could be a bad plug wire. If you have an ohm mete... Oct 20 2016, 05:54 PM yellow75 sooty black. dry as a bone. Sorry I cleaned it a p... Oct 20 2016, 06:13 PM
yeahmag OK. So at this point you can decide to do a compre... Oct 21 2016, 09:47 AM yellow75
OK. So at this point you can decide to do a compr... Oct 21 2016, 02:48 PM zach914v8 A quick and simple test to see if your plug wires ... Oct 21 2016, 06:01 AM zach914v8
A quick and simple test to see if your plug wires... Oct 21 2016, 06:34 AM Vacca Rabite
The spark tester gap is ajustable, 20kv is li... Oct 21 2016, 09:10 AM zach914v8
The spark tester gap is ajustable, 20kv is l... Oct 21 2016, 09:27 AM pbanders
A quick and simple test to see if your plug wires... Oct 21 2016, 12:11 PM yellow75 Yeah I will do a compression check this weekend al... Oct 21 2016, 02:44 PM yellow75 I will do that. Thanks. Oct 22 2016, 08:22 AM |
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