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924/931/944/951/968 Forum Porsche 924, 924S, 931, 944, 944S, 944S2, 951, and 968 discussion, how-to guides, and technical help. (1976-1995)
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Got it started!!! But only with 3 injectors plugged?

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Old 01-20-2018, 10:45 PM
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1988 924s
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Default Got it started!!! But only with 3 injectors plugged?

I am pretty excited! I think I am very close to getting this beautiful 924s back on the road . My Grandfather was the original owner of this beautiful car and he passed away 3 years ago My dream is to fully restore his 60,000 mile 924s and drive it in his honor. So to make a long story short I went through the countless number of procedures and suggestions via Clarks and traced down this no start issue to a definite fuel delivery , fuel injector issue. My brand new set of injectors from five 0 motorsports arrived today and i installed them. Attempted to start the car and it would start then die , and putter. I then UN hooked an injector harness and the car started right up flawlessly but obviously on three cylinders.. ? Stumped ! Could this be my FPR causing the issue? I have 36 to 38 psi at the rail. I passed the leak down pressure test via Clarks. When I had the relay jumped I herd a loud air type hissing noise coming from the regulator and could feel cold air coming off of it. I feel like I am very close with this car and will not stop till it is fully restored any and i mean any suggestions will be taken to heart ! I appreciate everyonegoing out their way to help!
Old 01-21-2018, 02:46 AM
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odonnell
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What injectors are they? Starting on 3 injectors implies too high of a load on the injector driver in the DME. There is a "safety" shutdown circuit if it has too much current.
Old 01-21-2018, 03:12 AM
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Hey O donnel! I can't thanks ou
Old 01-22-2018, 02:13 AM
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Thanks for the quick reply! They are injectors from five 0 motorsports low impudence, 24 pound injectors. I believe they are some type of Denso rebuilds or something like that.



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