 L-Jet issues, Injectors not injecting |
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| echocanyons |
 Feb 8 2009, 12:20 PM
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Advanced Member  Group: Benefactors Posts: 2,115 Joined: 24-December 02 From: Bay Area, CA Member No.: 7 Region Association: Central California 
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Hello,
I have a 75 1.8 with L-jet, it seemed to be running fine aside from a possible bit of a hard cold start. I was driving it and suddenly the engine died, I looked in the engine compartment and the negative battery cable had popped off. It has getting good spark. The injectors do not pulse at all and can't seem to figure out the root cause of the problem. I have tested the dual relay and have installed a new resistor pack, thinking that this was the issue, but still no luck. I do know the fuel pump is working (I did not test the pressure) the AFM seems to be functioning. The white wire connected on the same side as the condenser on the coil. Could the battery cable thing have toasted the ECU? How exactly do the injectors get the signal to fire? They are all batch fire right? Are the injectors pressure driven in as much as they will not fire if there is not enough pressure or will they drip fuel? I don't remember but do the injectors "click" when the recieve the electrical signal to fire? (IMG:style_emoticons/default/confused24.gif) |
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| echocanyons |
Feb 10 2009, 10:02 AM
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Advanced Member Group: Benefactors Posts: 2,115 Joined: 24-December 02 From: Bay Area, CA Member No.: 7 Region Association: Central California
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QUOTE Check wire going from the positive side of the battery to the dual relay that controls the injectors and the fuel pump. Check the middle pole on the multi resistor pack...right next to the dual relay. see of that pole has power. Check that the white wire is in fact producing 12vdc in time with the points...its a batch fired system... Will do, I think I have a good basis to start. I will post my findings |
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Posts in this topic
echocanyons L-Jet issues Feb 8 2009, 12:20 PM
echocanyons If the injectors are fired by the breaker points (... Feb 8 2009, 01:23 PM underthetire You are correct, batch fire. Injector points will ... Feb 8 2009, 05:35 PM 9146986 If it has the original AFC injection, there are no... Feb 8 2009, 05:43 PM
echocanyons Yes its L-jet, stock so no injector points. I was ... Feb 8 2009, 06:57 PM Dave_Darling That white wire that hooks up to the (-) terminal ... Feb 8 2009, 07:10 PM ClayPerrine There is an additional power wire that comes from ... Feb 8 2009, 09:04 PM echocanyons I examined all of the wires and connections and di... Feb 8 2009, 09:27 PM r_towle Check wire going from the positive side of the bat... Feb 8 2009, 09:37 PM echocanyons So after testing a few more things I nailed down t... Feb 14 2009, 08:35 PM echocanyons So I dissected the bad ECU to try and pin down the... Feb 14 2009, 08:38 PM echocanyons on second thought is this corrosion on the left si... Feb 14 2009, 08:47 PM sean_v8_914 looks like old solder flux to me Feb 15 2009, 09:36 AM zx-niner Glad to hear my old ECU worked after sitting for a... Feb 15 2009, 09:49 AM jim_hoyland Here's a L-Jet test: http://manuals.type4.org... Feb 15 2009, 02:39 PM jkeyzer My guess is that the battery cable falling off cau... Feb 15 2009, 04:58 PM |
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