1.7l starting issues, motor starts if I disconnect cyl 4 injector cable |
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1.7l starting issues, motor starts if I disconnect cyl 4 injector cable |
b.stirbu |
Aug 9 2015, 04:14 PM
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#1
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1974 daily driver Group: Members Posts: 27 Joined: 14-June 15 From: Netherlands Member No.: 18,848 Region Association: Europe |
Dear 914ers,
I'm quite in a pickle with my 914 1.7. The engine sometimes starts sometimes not (usually after it started, ran 5-10 seconds and then stopped and I couldn't manage to start it again). Messing arround in the engine compartment I accidentally unplugged the cyl 4 fuel injector and surprise the engine started and idled low. Tried again one, two, three times and he started succesfully, but as soon as I plug back the cyl 4 injector cable does not want to start again... What's wrong here? (the injector not, because I've swapped 3 with 4 and I still had the same problem). According to the attached current flow cyl 4 injector is in series with the cold start valve and the thermoswitch for the cold start valve.. Am I looking at the right diagram? I also don't know where current track 102 comes from. Also very interesting is that I removed the injectors 3 and 4 and placed them in two cups to see if they work, and I could start the engine in two cylinders (although the cyl 4 injector plug was connected) Cheers, Bogdan Attached thumbnail(s) |
b.stirbu |
Aug 29 2015, 07:17 AM
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#2
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1974 daily driver Group: Members Posts: 27 Joined: 14-June 15 From: Netherlands Member No.: 18,848 Region Association: Europe |
Thanks guys for your help until now.
I'm running into something that baffles me... The valves are adjusted, dwell angle is 45, ignition timing set with the timing light at 3500 rpm, new spark plugs, new fuel pump, all the injectors have been cleaned and they spay (i've rotated them around the cilinders) and I'm still always running on 2 cilinders: 4 and 2.. What can it be ? -No Vacuum? I doubt because the mix reaches the cilinder head... -The valves are adjusted wrong? At least the intake valves opens (the sparkplugs are wet) I doubt the cam shaft lobes are worn because when I adjusted the valves the were moving nicelly... The sparks for cylinder 1 and 3 spark outside the engine, but seem to not do it when I fit them in... when I took the sparks out they were nicely wet... |
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