Need help starting a 75 1.8L L-Jet in NoVA, Injectors not spraying Options

[wrightee]

I have a '75 1.8L L-Jet that has sat for a while. Its my parts car, but I'm trying to get it running now.

When I got it, the fellow told me the double relay was bad, so I replaced that. Fuel lines were also totally gummed at the tank, so those have been changed, tank cleaned and fuel filter replaced. I also had the fuel injectors tested and cleanded. I had also found a shredded "stray" wire, which turned out to be the engine temp sensor (under the engine sheet metal), which was replaced.

The car will "fire" when I spray starting fluid in the intake. I don't have a pressure guage, but the pressure is sufficient to blow an improperly clamped fuel line off the fuel rail (I had an injector out, and some fuel must've sprayed into the hole, causing a "sputtering" near-start). I pulled the injectors to see if they were spraying, and they are not.

When I manipulate the AFM flap, I can hear both the fuel pump as well as a "hissing" sound from the pressure regulator (but can not see any leaks).

Troubleshooting these type issues is not my strength (IMG:style_emoticons/default/confused24.gif) so any help/advice on where I need to look next would be greatly appreciated.

[timothy_nd28]

He stated in a PM that his fuel injector last chance filters were now plugged with old rubber bits/sludge. I'm thinking since he replaced his FI harness, that the injectors are actually firing now. However, the fuel injectors are now plugged with debris.
After he flushes out the lines, and re-cleans these injectors, it should fire up.

[wrightee]

He stated in a PM that his fuel injector last chance filters were now plugged with old rubber bits/sludge. I'm thinking since he replaced his FI harness, that the injectors are actually firing now. However, the fuel injectors are now plugged with debris.
After he flushes out the lines, and re-cleans these injectors, it should fire up.

Following tim_nd's expert advice, (IMG:style_emoticons/default/pray.gif) I've narrowed this non-start problem down to seized injectors. I get a "click" from one, but the other three don't click. All show the same resistance, so I'm hoping that a good fuel injector cleaning/rebuild service may free up the stuck ones. Anyone have any recommendations on where to send them?

Also, I found this link that indicates most L-Jetronic injectors (from VWs) are interchangeable with mine, though the numbers on mine don't match up with this chart. The Porsche # is 0 280 150 102 and the VW # is 022 096 031C. Any of you L-Jet folks use any of these other injectors? (in case my bad ones can't be fixed)

http://www.ratwell.com/technical/Injectors.html

[ClayPerrine]

Find a 1980s vintage Datsun/Nissan. They use a Nippondenso built licensed copy of the Bosch L-Jet. The injectors are interchangeable with the 914 L-Jet injectors, and you can get them at any FLAPS. My lookup found these: 1984 Nissan 200SX injectors.

52.99 each, brand new.

He stated in a PM that his fuel injector last chance filters were now plugged with old rubber bits/sludge. I'm thinking since he replaced his FI harness, that the injectors are actually firing now. However, the fuel injectors are now plugged with debris.
After he flushes out the lines, and re-cleans these injectors, it should fire up.

Following tim_nd's expert advice, (IMG:style_emoticons/default/pray.gif) I've narrowed this non-start problem down to seized injectors. I get a "click" from one, but the other three don't click. All show the same resistance, so I'm hoping that a good fuel injector cleaning/rebuild service may free up the stuck ones. Anyone have any recommendations on where to send them?

Also, I found this link that indicates most L-Jetronic injectors (from VWs) are interchangeable with mine, though the numbers on mine don't match up with this chart. The Porsche # is 0 280 150 102 and the VW # is 022 096 031C. Any of you L-Jet folks use any of these other injectors? (in case my bad ones can't be fixed)

http://www.ratwell.com/technical/Injectors.html

[wrightee]

Find a 1980s vintage Datsun/Nissan. They use a Nippondenso built licensed copy of the Bosch L-Jet. The injectors are interchangeable with the 914 L-Jet injectors, and you can get them at any FLAPS. My lookup found these: 1984 Nissan 200SX injectors.

52.99 each, brand new.

He stated in a PM that his fuel injector last chance filters were now plugged with old rubber bits/sludge. I'm thinking since he replaced his FI harness, that the injectors are actually firing now. However, the fuel injectors are now plugged with debris.
After he flushes out the lines, and re-cleans these injectors, it should fire up.

Following tim_nd's expert advice, (IMG:style_emoticons/default/pray.gif) I've narrowed this non-start problem down to seized injectors. I get a "click" from one, but the other three don't click. All show the same resistance, so I'm hoping that a good fuel injector cleaning/rebuild service may free up the stuck ones. Anyone have any recommendations on where to send them?

Also, I found this link that indicates most L-Jetronic injectors (from VWs) are interchangeable with mine, though the numbers on mine don't match up with this chart. The Porsche # is 0 280 150 102 and the VW # is 022 096 031C. Any of you L-Jet folks use any of these other injectors? (in case my bad ones can't be fixed)

http://www.ratwell.com/technical/Injectors.html

Update...had the injectors refurbished at MrInjector.us (good price and great service). All had shown good electric resistance, but no "click". Testing confirmed they were siezed/gummed inside, but they came back working after cleaning. Put them back in, and after a few cranks she started! (IMG:style_emoticons/default/piratenanner.gif)

Thanks again to tim_nd who has provided a great deal of technical help to get another L-jet running!

Now, I just need to get it running well! ...and then fix the rust (IMG:style_emoticons/default/welder.gif)