 fuel injection issue, trigger points? |
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| luskesq |
 Oct 24 2010, 06:40 PM
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#1
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Member  Group: Members Posts: 276 Joined: 24-October 10 From: Fresno, CA Member No.: 12,303 Region Association: Central California  |
Have a '70 1.7 that I picked up that hasn't been run in years. Gone through ignition, points, plugs, timing and it runs . . . badly. Discovered when running that I can pull the ignition wires to 1 & 2 and it runs the same. No injector clicking with key on and opening the throttle switch on 1 or 2. 3 & 4 click. Could the problem be the trigger points and do all stock 1070 1.7's have trigger points?
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| Tom |
Oct 26 2010, 10:04 AM
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Advanced Member Group: Members Posts: 2,139 Joined: 21-August 05 From: Port Orchard, WA 98367 Member No.: 4,626 Region Association: None |
An easy test is to hook up a meter to the injector plug to see if the ICU is sending a signal to the injectors. Plug has two contacts, one is ground. So check that the ground is good, then put the meter to the other connection and turn over the engine and see if the voltage gets to the injector. That way you are checking that the ground is good also from the injector to the rear junction for the inj. ground wires.
Tom |
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| realred914 |
Oct 26 2010, 11:00 AM
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#3
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Senior Member Group: Retired Members Posts: 1,086 Joined: 1-April 10 From: california Member No.: 11,541 Region Association: None |
QUOTE(Tom @ Oct 26 2010, 09:04 AM)  An easy test is to hook up a meter to the injector plug to see if the ICU is sending a signal to the injectors. Plug has two contacts, one is ground. So check that the ground is good, then put the meter to the other connection and turn over the engine and see if the voltage gets to the injector. That way you are checking that the ground is good also from the injector to the rear junction for the inj. ground wires. Tom yes but just do NOT accidently short the injector singal wire to ground when testing (cranking motor) if you short the singal wire from the brain to ground 9or short teh connector with your test leads) you stand a good chance of permantly destroying one of teh two power transisters that power the injectors, then it is end of the brain. i did this once. not fun, so be very carefull with the test leads when testing for power to the injectors. one short at it is all over for the brain. |
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Posts in this topic
luskesq fuel injection issue Oct 24 2010, 06:40 PM
swl I think that 1&2 failing is indeed half of the... Oct 24 2010, 07:39 PM
Cap'n Krusty
I think that 1&2 failing is indeed half of th... Oct 24 2010, 08:29 PM brp986s All stock 1.7 have the trigger points in the distr... Oct 24 2010, 07:39 PM luskesq
All stock 1.7 have the trigger points in the dist... Oct 24 2010, 08:53 PM luskesq
All stock 1.7 have the trigger points in the dist... Oct 24 2010, 09:25 PM ejm Sounds more like a problem with the injector groun... Oct 24 2010, 07:45 PM Jeff Bowlsby :agree: Oct 24 2010, 08:20 PM brp986s 2 phillips screws mount the triggers into the side... Oct 24 2010, 09:08 PM ejm You need to pull the distributor to remove the tri... Oct 25 2010, 04:32 AM luskesq Thank you for confirming what I suspected. I inte... Oct 25 2010, 10:17 AM rick 918-S I made a simple test light from a couple small wir... Oct 26 2010, 10:58 AM |
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