 L-Jet Injectors Aren't Getting Ground, L-Jet Injectors |
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| nmkimosabe |
 Mar 21 2026, 09:44 AM
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Member  Group: Members Posts: 59 Joined: 16-March 25 From: Santa Fe, NM Member No.: 28,660 Region Association: Rocky Mountains  |
After a thorough investigation, it appears that the injectors are not getting ground to fire properly on my 1974 1.8L. Maybe it's an air flow sensor issue but not sure. All the other wiring seems to be okay. I would appreciate any thoughts from the knowledgeable folks on this forum. Thank you.
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| fiacra |
Mar 21 2026, 12:15 PM
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#2
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Person.Woman.Man.Camera.TV. = MCI Group: Members Posts: 747 Joined: 1-March 19 From: East Bay Region - California Member No.: 22,920 Region Association: Northern California 
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Jeff is the expert here so I'd start with what he recommended. Along those lines, have you tried swapping out the dual relay? I think you said you had the original metal can relay in your car. I'm happy to lend you a NIB dual relay for a test if you wish. You should have a back up relay anyway so you are not wasting money by ordering a new one. However for testing purposes I can get you one quicker than you'll be able to get from JBugs or any other supplier. Happy to put it in today's mail if you get back to me quickly.
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| nmkimosabe |
Mar 21 2026, 04:19 PM
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Member Group: Members Posts: 59 Joined: 16-March 25 From: Santa Fe, NM Member No.: 28,660 Region Association: Rocky Mountains |
QUOTE(fiacra @ Mar 21 2026, 11:15 AM)  Jeff is the expert here so I'd start with what he recommended. Along those lines, have you tried swapping out the dual relay? I think you said you had the original metal can relay in your car. I'm happy to lend you a NIB dual relay for a test if you wish. You should have a back up relay anyway so you are not wasting money by ordering a new one. However for testing purposes I can get you one quicker than you'll be able to get from JBugs or any other supplier. Happy to put it in today's mail if you get back to me quickly. I took your advice earlier this week and bought one per the SKU's and photos you posted. I won't get it until Wednesday, but my mechanic thinks mine if okay. I am also buying another resister pack in case mine is bad. I really appreciate your offer to send me a loaner! I will keep you posted as we solve this issue. Best to you. |
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Posts in this topic
nmkimosabe L-Jet Injectors Aren't Getting Ground Mar 21 2026, 09:44 AM
JeffBowlsby Check the schematic for these circuits. LJet injec... Mar 21 2026, 09:58 AM
nmkimosabe
Check the schematic for these circuits. LJet inje... Mar 21 2026, 04:25 PM nmkimosabe
Check the schematic for these circuits. LJet inj... Mar 22 2026, 10:42 AM Superhawk996
I will order a new resistor pack as mine might be... Mar 22 2026, 11:16 AM nmkimosabe
I will order a new resistor pack as mine might b... Mar 22 2026, 12:55 PM Superhawk996 Just beware - lots of mechanics are basically lear... Mar 22 2026, 01:24 PM nmkimosabe
Just beware - lots of mechanics are basically lea... Mar 22 2026, 02:11 PM nmkimosabe Here's an update on my 914 and unfortunately, ... Mar 31 2026, 05:07 PM Superhawk996 . I had the car towed to my mechanic who spent 2 d... Mar 31 2026, 07:45 PM nmkimosabe
. I had the car towed to my mechanic who spent 2 ... Apr 1 2026, 09:14 AM Superhawk996
A) I believe it is getting spark, and fuel but j... Apr 1 2026, 12:11 PM JeffBowlsby L-Jet is one of the early EFI systems, common in t... Mar 31 2026, 05:41 PM nmkimosabe
L-Jet is one of the early EFI systems, common in ... Mar 31 2026, 06:44 PM Rob-O I’m with Superhawk. Make a plan and methodicall... Apr 1 2026, 11:39 AM nmkimosabe
I’m with Superhawk. Make a plan and methodical... Apr 1 2026, 12:13 PM Superhawk996
Yes I can use a voltmeter and I have a list of t... Apr 1 2026, 12:48 PM StarBear Also check the o-ring on the oil filler cap. A fai... Apr 1 2026, 12:28 PM nmkimosabe
Also check the o-ring on the oil filler cap. A fa... Apr 1 2026, 02:42 PM Maltese Falcon Check your main grounds around the engine bay/ and... Apr 1 2026, 12:31 PM nmkimosabe
Check your main grounds around the engine bay/ an... Apr 1 2026, 04:07 PM nmkimosabe Well 2 weeks and learning a lot about L-jet inject... Apr 7 2026, 02:38 PM TRP great job at debugging the issue! I have so m... Apr 7 2026, 03:00 PM Rob-O The head sensor isn’t terribly difficult. Take ... Apr 8 2026, 04:16 AM nmkimosabe
The head sensor isn’t terribly difficult. Take... Apr 8 2026, 08:24 AM Rob-O For gaskets it depends. The injectors could be le... Apr 9 2026, 06:25 AM Geezer914 If it's running like crap, it may be a vacuum ... Apr 9 2026, 09:12 AM nmkimosabe Can someone please tell me if I should use a crush... Apr 11 2026, 02:22 PM fiacra
Can someone please tell me if I should use a crus... Apr 11 2026, 04:03 PM nmkimosabe
[quote name='nmkimosabe' post='3252868' date='Apr... Apr 11 2026, 07:35 PM nmkimosabe
Can someone please tell me if I should use a cru... Apr 12 2026, 08:43 AM fiacra @[url=http://www.914world.com/bbs2/index.php?showu... Apr 12 2026, 11:39 AM nmkimosabe @fiacra
My part # appears to be 032.096.041 which... Apr 12 2026, 01:06 PM fiacra
[b]@[url=http://www.914world.com/bbs2/index.php?s... Apr 12 2026, 03:06 PM nmkimosabe
[b]@[url=http://www.914world.com/bbs2/index.php?... Apr 12 2026, 03:55 PM Superhawk996 RE: L-Jet Injectors Aren't Getting Ground Apr 12 2026, 02:30 PM Rob-O They’re available from Porsche again, I believe. Apr 12 2026, 03:36 PM |
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