 75 still running rich, 75 still running rich |
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| brooks944 |
 Jun 26 2017, 02:19 PM
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#1
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Member  Group: Members Posts: 249 Joined: 5-September 10 From: Kingston, TN Member No.: 12,139 Region Association: South East States  |
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 |
Jun 27 2017, 03:45 PM
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#2
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Member Group: Members Posts: 249 Joined: 5-September 10 From: Kingston, TN Member No.: 12,139 Region Association: South East States |
Thanks, what do I need for a vacuum leak. Changed too many hoses and did the cigar test!
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| malcolm2 |
Jun 27 2017, 03:55 PM
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#3
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Advanced Member Group: Members Posts: 2,747 Joined: 31-May 11 From: Nashville Member No.: 13,139 Region Association: South East States 
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QUOTE(brooks944 @ Jun 27 2017, 04:45 PM)  Thanks, what do I need for a vacuum leak. Changed too many hoses and did the cigar test! I made me a smoke tester. Couple pieces of charcoal in a fresh paint can from HD. Compressed air in, smoke out. attach to a vac line on the car and see where the smoke comes out. I will find my post and link it here. http://www.914world.com/bbs2/index.php?s=&...t&p=2450938 Did you check your CHT: ECU 13 to ground yet? |
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Posts in this topic
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 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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