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> Trouble shooting injectors
LanceW3544
post Jul 29 2018, 02:38 PM
Post #1


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Joined: 25-July 18
From: Grand Rapids Mi
Member No.: 22,337
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First of all forgive my lack of knowledge. I am not new to cars but I am new to 914s. I recently purchased a 1970 914 1.7L. with D. Jet. The previous owner noted that it ran last year but was not able to get running this year. The car is far from perfect but I hope to be a solid start for a EJ20 swap in the next year or so. I would love to get the 1.7 fired up to start taking care of of other issues I am not currently aware of.
So let me start discribing what I am seeing

Good Battery- Cranks over good and for a long time if needed
Fuel Pump- working well but does not shut off after 1-2 seconds.
New plugs
New wires
New cap and rotor
I check the fuel rail and I know I have fuel to the injectors.
I am able to fire the car up with starter fluid but ofcourse dies when it is burned off.
I have had it runnig several times but is not consistant.
I have check the grounds to the batter as well as the injector grounds. I don't know where to go next.

Any advice would be appreciated. As you explain your suggestion please don't use abbrevations as I am not framilar with them all yet.


Thanks
-lance
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Posts in this topic
LanceW3544   Trouble shooting injectors   Jul 29 2018, 02:38 PM
mepstein   I send all our injectors to mr injector. Even if t...   Jul 29 2018, 03:25 PM
Tbrown4x4   What is your fuel pressure? Stock pump? Check the...   Jul 29 2018, 04:10 PM
Porschef   Really? Grand Rapids? Hmmmm, :idea: there might...   Jul 29 2018, 04:38 PM
Bartlett 914   plugged injectors or bad gas.   Jul 29 2018, 05:31 PM
worn   plugged injectors or bad gas. Bad gas, fuel pres...   Jul 29 2018, 05:35 PM
LanceW3544   Thank you everyone for your quick response. I am v...   Jul 29 2018, 07:21 PM
Freezin 914   Really? Grand Rapids? Hmmmm, :idea: there migh...   Jul 29 2018, 08:07 PM
Mark Henry   Down and dirty way to check on injectors is to rem...   Jul 29 2018, 09:07 PM
914 RZ-1   I hooked a 9v battery up to the injectors to see i...   Jul 29 2018, 09:52 PM
Dave_Darling   Your engine needs three things to run: Fuel, air, ...   Jul 29 2018, 10:11 PM
Chris914n6   Unplug the coil - don't want any sparks for th...   Jul 30 2018, 04:02 AM
Bartlett 914   So it runs with starter fluid. That speaks a lot. ...   Jul 30 2018, 05:05 AM
jonferns   Cruzin Performance is in Traverse City, MI. Just s...   Jul 30 2018, 05:54 AM
LanceW3544   Jonferns- How much do they charge for the injecto...   Jul 30 2018, 03:51 PM
brant   Jonferns- How much do they charge for the inject...   Jul 30 2018, 04:08 PM
jonferns   Jonferns- How much do they charge for the inject...   Jul 30 2018, 04:57 PM
LanceW3544   pull all 4 injectors and none of them are spraying...   Jul 30 2018, 05:27 PM
Dave_Darling   Still could be an unplugged MPS, or a set of unplu...   Jul 30 2018, 03:57 PM
LanceW3544   I created all new grounds for the white injectors ...   Jul 30 2018, 04:15 PM
Dave_Darling   Do you have a "noid light"? Or some oth...   Jul 31 2018, 10:22 AM
Chris914n6   Next step is to trigger the injectors manually und...   Jul 31 2018, 03:42 PM
LanceW3544   I was able to manual test the injectors. Directly...   Jul 31 2018, 05:56 PM
Chris914n6   Most likely injector trigger. https://members.re...   Jul 31 2018, 07:38 PM
Dave_Darling   Again, check all of the wires and hoses to make su...   Jul 31 2018, 09:11 PM
LanceW3544   Again, check all of the wires and hoses to make s...   Aug 1 2018, 05:42 AM
Dave_Darling   What else should I be checking? Make sure those...   Aug 1 2018, 09:36 AM
mgphoto   Pump keeps running after the 2 second interval mea...   Aug 1 2018, 09:01 AM
LanceW3544   Pump keeps running after the 2 second interval me...   Aug 1 2018, 09:17 AM
mgphoto   Pump keeps running after the 2 second interval m...   Aug 1 2018, 09:27 AM
LanceW3544   pulled all the relays which I have done before and...   Aug 2 2018, 03:21 PM
Bartlett 914   pulled all the relays which I have done before an...   Aug 2 2018, 04:28 PM
Chris914n6   Sounds like common corrosion. Give all the connect...   Aug 2 2018, 03:39 PM
The Cabinetmaker   One of those relays powers the injection system. T...   Aug 4 2018, 12:26 PM


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