Zed Head Posted December 21, 2017 Share #25 Posted December 21, 2017 (edited) I don't see the other ground wire for the EFI system. It could be attached somewhere else but it came from the factory with a plastic connector, to a pigtail at the battery negative post. Somebody has monkeyed with yours, that battery cable to the firewall is way overkill. Edited December 21, 2017 by Zed Head Link to comment https://www.classiczcars.com/topic/59202-cannot-get-injector-pulse-passes-efi-bible-tests/?page=3#findComment-538079 Share on other sites More sharing options...
S30Driver Posted December 21, 2017 Share #26 Posted December 21, 2017 This one under the philips screw. Link to comment https://www.classiczcars.com/topic/59202-cannot-get-injector-pulse-passes-efi-bible-tests/?page=3#findComment-538080 Share on other sites More sharing options...
Zed Head Posted December 21, 2017 Share #27 Posted December 21, 2017 Found a picture on zcar, from Echutton. I think he's a member here. http://www.zcar.com/forum/10-70-83-tech-discussion-forum/398985-78-datsun-power-line-circuit.html @echutton Link to comment https://www.classiczcars.com/topic/59202-cannot-get-injector-pulse-passes-efi-bible-tests/?page=3#findComment-538081 Share on other sites More sharing options...
Zed Head Posted December 21, 2017 Share #28 Posted December 21, 2017 2 minutes ago, S30Driver said: This one under the philips screw. There's one at the battery too. Link to comment https://www.classiczcars.com/topic/59202-cannot-get-injector-pulse-passes-efi-bible-tests/?page=3#findComment-538082 Share on other sites More sharing options...
S30Driver Posted December 21, 2017 Share #29 Posted December 21, 2017 You''re of course right Zed, sorry for the confusion. Link to comment https://www.classiczcars.com/topic/59202-cannot-get-injector-pulse-passes-efi-bible-tests/?page=3#findComment-538084 Share on other sites More sharing options...
Dave WM Posted December 21, 2017 Share #30 Posted December 21, 2017 I "think" the EFI ground maybe the one under that same bolt shared by the monster on the fire wall. Link to comment https://www.classiczcars.com/topic/59202-cannot-get-injector-pulse-passes-efi-bible-tests/?page=3#findComment-538085 Share on other sites More sharing options...
Zed Head Posted December 22, 2017 Share #31 Posted December 22, 2017 Only MrChefur knows for sure. Meter, meter, pumpkin eater. Link to comment https://www.classiczcars.com/topic/59202-cannot-get-injector-pulse-passes-efi-bible-tests/?page=3#findComment-538091 Share on other sites More sharing options...
MrChefur Posted December 22, 2017 Author Share #32 Posted December 22, 2017 2 hours ago, S30Driver said: Yes, you are right Cliff. The circled EFI ground in your picture. 3 hours ago, S30Driver said: If it were mine, i'd be cleaning & brightening up that important ground on the intake manifold. In the pix, looks like it has not been touched. 2 hours ago, S30Driver said: This one under the philips screw. I cannot say how grateful I am for everyone's help. That was it. I cleaned that ground and it fired right up after getting all the air out of the fuel lines. @Zed Head, I'm definitely going to do like you suggested and check everything now. I'd rather not have this again. Thank you so much everybody, I hope you all have a very merry Christmas. 1 Link to comment https://www.classiczcars.com/topic/59202-cannot-get-injector-pulse-passes-efi-bible-tests/?page=3#findComment-538095 Share on other sites More sharing options...
240260280 Posted December 22, 2017 Share #33 Posted December 22, 2017 I think this was mentioned in post #6... but what do I know? 1 Link to comment https://www.classiczcars.com/topic/59202-cannot-get-injector-pulse-passes-efi-bible-tests/?page=3#findComment-538097 Share on other sites More sharing options...
MrChefur Posted December 22, 2017 Author Share #34 Posted December 22, 2017 Just now, 240260280 said: I think this was mentioned in post #6... but what do I know? You're right - it was. I misunderstood and thought you meant the other ground cable going onto the intake manifold, to the right side in my pictures. My bad. Link to comment https://www.classiczcars.com/topic/59202-cannot-get-injector-pulse-passes-efi-bible-tests/?page=3#findComment-538098 Share on other sites More sharing options...
240260280 Posted December 22, 2017 Share #35 Posted December 22, 2017 You pursued and resolved it! I' happy for you! A nice running Z for Christmas. Link to comment https://www.classiczcars.com/topic/59202-cannot-get-injector-pulse-passes-efi-bible-tests/?page=3#findComment-538099 Share on other sites More sharing options...
siteunseen Posted December 22, 2017 Share #36 Posted December 22, 2017 10 minutes ago, 240260280 said: I think this was mentioned in post #6... but what do I know? I knew you had mentioned it but didn't read back far enough. I caught S30's post and went from there. That's what happens when you don't keep up. Glad it came back around and was resolved. Early Christmas present I'd say. I love this forum! Link to comment https://www.classiczcars.com/topic/59202-cannot-get-injector-pulse-passes-efi-bible-tests/?page=3#findComment-538100 Share on other sites More sharing options...
motorman7
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