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> 75 still running rich, 75 still running rich
brooks944
post Jun 26 2017, 02:19 PM
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My 75 is running rich and fouling plugs after just a few miles. One of the members spent several hours helping me check and figure out the FI a couple of years ago and that made a difference (both on the car and how much I value your experts here). I have 2 extra 'brains' is it time to change that and check? One is from a '75 and one from a 74, does that matter? Both are for a 1.8 which my car is. Fuel injectors are rebuilt as well as the cold start valve. Most vacuum hoses changed. Thanks for any input.

Rick
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brooks944   75 still running rich   Jun 26 2017, 02:19 PM
Marty Yeoman   Check the pin count on the ECU. Some have six and ...   Jun 26 2017, 02:25 PM
jim_hoyland   Check the pin count on the ECU. Some have six and...   Jun 26 2017, 02:40 PM
brooks944   Not sure what that you mean, thanks for replying...   Jun 26 2017, 02:32 PM
brooks944   Probably a dumb reply, but do you have pics of wha...   Jun 26 2017, 02:38 PM
Marty Yeoman   Sorry My Bad. I meant AFM not ECU Check this out ...   Jun 26 2017, 02:46 PM
brooks944   Thanks, is the probable issue the AFM instead of t...   Jun 26 2017, 05:09 PM
malcolm2   So, did this just happen? Did something change, or...   Jun 26 2017, 05:56 PM
brooks944   The injectors were rebuilt a couple of years ago a...   Jun 27 2017, 08:31 AM
malcolm2   The injectors were rebuilt a couple of years ago ...   Jun 27 2017, 10:54 AM
brooks944   Also, the 75 has seven pins (I also have a 74 and ...   Jun 27 2017, 08:38 AM
malcolm2   Also, the 75 has seven pins (I also have a 74 and...   Jun 27 2017, 10:47 AM
white1975   cht sensor is bad I would say if the afm is not s...   Jun 27 2017, 11:02 AM
brooks944   Tim did help me check out the maf, it worked fine....   Jun 27 2017, 12:20 PM
malcolm2   Here is a simple test for you to try.... study up...   Jun 27 2017, 12:57 PM
brooks944   Here are some pictures of the spark plugs, probabl...   Jun 27 2017, 02:26 PM
Root_Werks   As some have stated, could be CHT, my money is on ...   Jun 27 2017, 03:15 PM
brooks944   Thanks, what do I need for a vacuum leak. Changed...   Jun 27 2017, 03:45 PM
malcolm2   Thanks, what do I need for a vacuum leak. Change...   Jun 27 2017, 03:55 PM
timothy_nd28   Hi Rick, I've been following this thread but ...   Jun 27 2017, 05:51 PM
N_Jay   My 75 is running rich and fouling plugs after jus...   Jun 27 2017, 06:39 PM
brooks944   Clark, I got 1.376k ohms when pin 13 was connected...   Jun 28 2017, 12:43 PM
malcolm2   Clark, I got 1.376k ohms when pin 13 was connecte...   Jun 28 2017, 02:29 PM
brooks944   Tim, good luck on your test and thanks for your he...   Jun 28 2017, 01:45 PM
malcolm2   if you can find a way to check your fuel pressu...   Jun 28 2017, 02:46 PM
malcolm2   Just had a thought.... when you pull the hoses on ...   Jun 28 2017, 02:59 PM
914_teener   I just use the screw tee hole on the driver side f...   Jun 28 2017, 07:16 PM
malcolm2   I just use the screw tee hole on the driver side ...   Jun 28 2017, 08:27 PM
brooks944   OK, got the HF fuel injector kit and measured pin ...   Jun 29 2017, 11:36 AM
malcolm2   OK, got the HF fuel injector kit and measured pin...   Jun 29 2017, 11:44 AM
brooks944   Also, I did change the ECU yet. I have what seems...   Jun 29 2017, 11:39 AM
brooks944   Thanks. Did not change the ECU yet. It did run s...   Jun 29 2017, 12:27 PM
brooks944   Here is a couple of pictures of the plug from cyli...   Jun 30 2017, 12:10 PM
malcolm2   So who has more ideas about running rich? All 4 c...   Jul 6 2017, 06:47 AM
Bartlett 914   So who has more ideas about running rich? All 4 ...   Jul 6 2017, 07:33 AM


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