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> How do you adjust idle on 1975 1.8L l-jetronic
steveneashcraft
post May 16 2009, 05:21 PM
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Assuming that everything is right. Where is the idle adjustment on a 1975 Porsche 914 with a 1.8L engine with l-jetronic. Car is absolutely stock.
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Cap'n Krusty
post May 17 2009, 09:34 AM
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The "hold the idle steady" comment scares me. Here we go, brief version. To set the timing, remove AND PLUG the 2 vacuum lines at the distributor. The idle speed should rise substantially. Don't have any? Stop right here and get the right distributor. Turn the air bleed screw in until the idle is at 800 RPM. Remove the cover of the timing mark observation hole and shine the timing light in there. Look for the mark, which is red. If you don't see it aligned with the "V", make it do so. If the car runs at all well, it's gonna be close enough that only a minor adjustment should be necessary. Tighten the 10mm locking nut on the distributor clamp, and recheck the timing again. Readjust as necessary (clamping it down frequently moves the distributor slightly). Unplug and reattach the hoses, and turn the air bleed screw OUT (CCW) until the idle speed is again at 800 (or 850) RPM. You're done. If you used ANY other method to adjust the timing on your L-jet equipped engine, you did it wrong.

Have a nice day .............. The Cap'n
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Posts in this topic
steveneashcraft   How do you adjust idle on 1975 1.8L l-jetronic   May 16 2009, 05:21 PM
Cap'n Krusty   Assuming that everything is right. Where is the ...   May 16 2009, 06:33 PM
steveneashcraft   Assuming that everything is right. Where is the...   May 17 2009, 07:28 AM
Cevan   That rod is the top of the butterfly valve. I jus...   May 17 2009, 07:37 AM
Bleyseng   its a air bypass screw nothing to it really   May 17 2009, 07:33 AM
steveneashcraft   Thanks for the quick reply. I'm still confus...   May 17 2009, 08:39 AM
Cap'n Krusty   The "hold the idle steady" comment scare...   May 17 2009, 09:34 AM
steveneashcraft   The "hold the idle steady" comment scar...   May 17 2009, 12:48 PM
Dave_Darling   1) What should be under the air bypass screw on ...   May 17 2009, 02:58 PM
steveneashcraft   Dave, Thanks. That makes sense. I was told that ...   May 17 2009, 04:13 PM
Cap'n Krusty   OK. If you can't get it right with the air bl...   May 17 2009, 04:25 PM
ndfrigi   Hi Steve, I'm also a newbie with 914 (1975 1....   May 18 2012, 03:23 PM
vsg914   Wow, whered ya find that old thread. I hope he has...   May 18 2012, 03:34 PM
76-914   So there was a time that :poke: the Cap'n wa...   May 18 2012, 04:20 PM
Cap'n Krusty   So there was a time that :poke: the Cap'n w...   May 18 2012, 05:36 PM
vsg914   :lol4:   May 18 2012, 08:01 PM
messix   i had this problem once and it was vacuum leaks on...   May 19 2012, 09:30 AM
double-a   I recently performed some troubleshooting on my ...   Mar 26 2015, 08:31 AM
Geezer914   Having the Cap'n reply to posts is worth the p...   Mar 27 2015, 06:16 AM


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