Should all injectors click when pressing throttle before starting?, I searched, I really did... |
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Should all injectors click when pressing throttle before starting?, I searched, I really did... |
Rockaria |
Aug 20 2012, 10:05 AM
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#1
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ZippidyDoDah... Group: Members Posts: 817 Joined: 2-May 03 From: Southwest, USA Member No.: 645 Region Association: None |
Hello Everyone,
I am trying to revive a 73 2.0 from a long period of rest (5 years). I am having some troubles and have search till I can't see straight. I am in the process of trouble shooting but have one question (for now): I read that I should have 20 clicks from my injectors if I press the accelerator pedal to the floor slowly before starting. Should all 4 injectors click? Right now only injectors 1 and 4 click, 2 and 3 do nothing. BUT, if I swap the wires from 1 to 2 and from 3 to 4 I get the oposite. 2 clicks and 3 clicks but not 1 and 4. Is this normal? 73 2.0 Stock D-Jet FI. |
Spoke |
Aug 20 2012, 10:16 AM
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#2
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Jerry Group: Members Posts: 6,992 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
I think they all should click since the clicks when opening the throttle is equivalent to the carb acceleration pump. Sounds like one of your injector bank drivers is not working.
2 injectors fire together on the FI. |
Cupomeat |
Aug 20 2012, 10:21 AM
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#3
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missing my NY 914 in VA Group: Members Posts: 1,336 Joined: 26-November 07 From: Oakton VA Member No.: 8,376 Region Association: MidAtlantic Region |
Given the fact that the action changes when you swap the harness, I'd suggest you go thought and clean and reseat all the case grounds first as you might have an issue there, PLUS D-Jet is picky about grounds so it is good thing to get out of the way.
Good luck |
TheCabinetmaker |
Aug 20 2012, 10:38 AM
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#4
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I drive my car everyday Group: Members Posts: 8,304 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Check your connection at the distributor for the trigger points. Use a multi meter to check if both outer pins of the trigger point connection have continuity with the middle pin.
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McMark |
Aug 20 2012, 10:40 AM
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#5
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
No, only the set of injectors that is being 'activated' by the trigger points. I went through that pretty recently and learned.
If you rotate the engine (and thereby the trigger points) a bit you should switch to the other bank. |
Rockaria |
Aug 20 2012, 11:23 AM
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#6
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ZippidyDoDah... Group: Members Posts: 817 Joined: 2-May 03 From: Southwest, USA Member No.: 645 Region Association: None |
That makes sense. I will rotate the engine and check again, then clean the grounds and check the dizzy. I am making a list for the weekend. I was almost sure my harness was bad. I printed off Paul Anders D-Jet test pages and will slowly start to look for my problems.
Thanks everyone for your help. No, only the set of injectors that is being 'activated' by the trigger points. I went through that pretty recently and learned. If you rotate the engine (and thereby the trigger points) a bit you should switch to the other bank. |
JeffBowlsby |
Aug 20 2012, 11:46 AM
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#7
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914 Wiring Harnesses Group: Members Posts: 8,535 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None |
The condition following the swapping of 1+4/2+3 indicates a trigger point issue.
FI ground issues are 1+2/3+4 |
Rockaria |
Aug 20 2012, 01:10 PM
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#8
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ZippidyDoDah... Group: Members Posts: 817 Joined: 2-May 03 From: Southwest, USA Member No.: 645 Region Association: None |
The condition following the swapping of 1+4/2+3 indicates a trigger point issue. FI ground issues are 1+2/3+4 Thanks for this info. It was my next question. So the trigger points fire the left bank of 1+2 and then the right bank of 3+4. Giving half the needed fuel each time? Right? Who knows what I am up against. There were a few things not right on this engine when I got the car. I am beginning to think I may have a bad harness or FI triggers. I had it working perfectly and then it died. I cleaned the triggers and it worked for a while and then died again (Though I also checked the points gap and re-set the timing.) I am hoping it's something simple here. Most all of the parts are original 73 parts as far as I can tell. I am trying not to just throw money at this... Thanks again, |
JeffBowlsby |
Aug 20 2012, 06:24 PM
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#9
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914 Wiring Harnesses Group: Members Posts: 8,535 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None |
No.
FI grounds tied together are 1+2/3+4. So if 1+2 or 3+4 are not working check their common ground point. Trigger points control groups 1+4/2+3. The condition following the swapping of 1+4/2+3 indicates a trigger point issue. FI ground issues are 1+2/3+4 Thanks for this info. It was my next question. So the trigger points fire the left bank of 1+2 and then the right bank of 3+4. Giving half the needed fuel each time? Right? Who knows what I am up against. There were a few things not right on this engine when I got the car. I am beginning to think I may have a bad harness or FI triggers. I had it working perfectly and then it died. I cleaned the triggers and it worked for a while and then died again (Though I also checked the points gap and re-set the timing.) I am hoping it's something simple here. Most all of the parts are original 73 parts as far as I can tell. I am trying not to just throw money at this... Thanks again, |
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