 Fuel injector mystery and manual recommendations |
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| Robson51 |
 Dec 29 2019, 09:01 PM
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#1
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Member  Group: Members Posts: 88 Joined: 18-November 19 From: seattle Member No.: 23,654 Region Association: Pacific Northwest  |
In the process of running down one thing after another, took the ‘74 2.0 out for a drive. Had a miss, so pulled the plugs. This car has spent a lot of the last 9 years sitting, so gas tank has been cleaned and fuel lines changed.
#2 showed where a plug wire was barely attached which was quickly fixed, but the #3 plug was white. I mean really white. Like zero fuel lean. After looking at the connection to the injector, I saw the boot was ripped and the connection was pretty dirty, so I took i apart and sprayed electrical cleaner in it Drove it a couple miles, still had a miss, but when I pulled the #3 plug now it was black. Did I wake something up? Pulling the engine soon to fix oil leaks, so is it worth it to pull all the injectors and get them rebuilt? I have no idea what’s going on here. On another note, what’s the best manual for a 914 2.0? TIA Rob |
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| dr914@autoatlanta.com |
Dec 30 2019, 09:43 AM
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#2
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914 Guru Group: Members Posts: 7,900 Joined: 3-January 07 From: atlanta georgia Member No.: 7,418 Region Association: None |
If you have checked the compression and valve adjust and know that there are no top end noises (like a loose valve guide) I would start the car and let it idle, pulling one spark plug lead from the distributor cap at a time to localize the miss. THEN check the plug to see if it is sparking. If it is sparking, put a noid light in the injector lead to see if it is getting a signal. If it is switch injector leads. If not look at the ground leads at the back of the block. If you have misfire on diagonal cylinders, check the trigger points. That should be a good start
QUOTE(Robson51 @ Dec 29 2019, 08:01 PM)  In the process of running down one thing after another, took the ‘74 2.0 out for a drive. Had a miss, so pulled the plugs. This car has spent a lot of the last 9 years sitting, so gas tank has been cleaned and fuel lines changed. #2 showed where a plug wire was barely attached which was quickly fixed, but the #3 plug was white. I mean really white. Like zero fuel lean. After looking at the connection to the injector, I saw the boot was ripped and the connection was pretty dirty, so I took i apart and sprayed electrical cleaner in it Drove it a couple miles, still had a miss, but when I pulled the #3 plug now it was black. Did I wake something up? Pulling the engine soon to fix oil leaks, so is it worth it to pull all the injectors and get them rebuilt? I have no idea what’s going on here. On another note, what’s the best manual for a 914 2.0? TIA Rob |
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Posts in this topic
Robson51 Fuel injector mystery and manual recommendations Dec 29 2019, 09:01 PM
76-914
In the process of running down one thing after an... Dec 29 2019, 09:06 PM
Robson51
In the process of running down one thing after a... Dec 29 2019, 09:31 PM mankowski After you check for a short to #3 injector that mi... Dec 29 2019, 09:33 PM rhodyguy If you want to service the injectors 'Witch Hu... Dec 29 2019, 11:01 PM Robson51
If you want to service the injectors 'Witch H... Dec 30 2019, 01:07 AM Superhawk996
If you want to service the injectors 'Witch ... Dec 30 2019, 08:43 AM Robson51
If you have checked the compression and valve adj... Dec 30 2019, 12:33 PM dr914@autoatlanta.com start with the haynes manual, then get the factory... Dec 30 2019, 10:10 AM 914Sixer Check the injection harness, most are brittle and ... Dec 30 2019, 03:26 PM Robson51
Check the injection harness, most are brittle and... Dec 31 2019, 10:42 AM dr914@autoatlanta.com yes we repair them all of the time, solder and hea... Dec 31 2019, 11:07 AM |
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