 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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#1
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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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| nmkimosabe |
Apr 11 2026, 02:22 PM
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#2
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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 |
Can someone please tell me if I should use a crush ring on the new CHT sensor? The one I removed had one but I'm getting conflicting information as to whether one goes on or not. Thanks a bunch, as I'm waiting to install it.
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| fiacra |
Apr 11 2026, 04:03 PM
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#3
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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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QUOTE(nmkimosabe @ Apr 11 2026, 01:22 PM)  Can someone please tell me if I should use a crush ring on the new CHT sensor? The one I removed had one but I'm getting conflicting information as to whether one goes on or not. Thanks a bunch, as I'm waiting to install it. Here's pics of a Bosch NOS CHT sensor from my parts stockpile. It clearly has a copper crush washer on it. New, never installed, part #0280130012. Hope that helps.   |
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| nmkimosabe |
Apr 12 2026, 08:43 AM
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#4
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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 @ Apr 11 2026, 04:03 PM) QUOTE(nmkimosabe @ Apr 11 2026, 01:22 PM) Can someone please tell me if I should use a crush ring on the new CHT sensor? The one I removed had one but I'm getting conflicting information as to whether one goes on or not. Thanks a bunch, as I'm waiting to install it. Here's pics of a Bosch NOS CHT sensor from my parts stockpile. It clearly has a copper crush washer on it. New, never installed, part #0280130012. Hope that helps. @fiacra Any interest in selling this sensor? Thanks. |
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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 fiacra Jeff is the expert here so I'd start with what... Mar 21 2026, 12:15 PM nmkimosabe
Jeff is the expert here so I'd start with wha... Mar 21 2026, 04:19 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
[quote name='nmkimosabe' post='3252868' date='Apr... Apr 11 2026, 07:35 PM 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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