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I am having a very similar problem and this post has been extremely helpful.i keep blowing dme relays...brand new one doesn't work for long before something goes wrong.the "jumper" method on ...

how many psi does it take at the fuel rail to open up the injectors WHILE CRANKING on a 1987 924s?

Thank you for post.have 36 psi at the fuel rail while cranking...noid light on injector electrical connections do not show pulse?what to check on the AFM?

1987 924s ran fine with a vacuum leak at intake manifold gasket for 40k miles.Vacuum leak at the intake manifold cylinder #1.bought new gaskets...took off fuel rail.intake manifold.replaced gaskets.pu ...

I have been troubleshooting a crank no start issue for over 2 months..all started when i changed intake manifd gaskets to smooth out a mis caused by a vacuum leak at manifold gasket.i have replaced mo ...

Yea same car in previoua threads.thank you for guidance.Have fuel with adequate pressure (36psi)to the fuel rail.and have spark.sent away dme to be bench tested.trying to rule out timing issue in the ...

please forgive the elementary question.i am am amatueur mechanic at best.took off manifold gasket to fix vacuum leak.put it all back together now crank no start.firing order is correct.what could caus ...

Crank no start.have spark.have fuel pressure at fuel line.cylinder #4 injector is leaking at the fuel rail into the electrical connector..using multimeter. the #4 injector reading is way off(lower) fr ...

Crank no start.have spark.have fuel pressure at fuel line.cylinder #4 injector is leaking at the fuel rail into the electrical connector..using multimeter. the #4 injector reading is way off(lower) fr ...

yes have 37 psi when cranking.any other ideas

Tach hops when cranking..so does that mean that the reference and speed sensors are good?

Thanks much!clarks garage definately has a Wealth of information.which sensor would u start with..tach hops so does that mean the speed and reference sensors are good?alsoi accidently swapped the spee ...

1987 porsche 924s crank no start.have spark.tach bounches when cranking.have fuel pressure to the rail.fuel injectors do not show pulse with noid light.with multimeter both plugs have voltage on fuel ...

1987 porsche 924s crank no start.have spark.tach bounches when cranking.have fuel pressure to the rail.fuel injector do not show pulse with noid light.with multimeter both plugs have voltage on fuel i ...

where do fuel injectors get their pulse from?i have fuel she there yet?to the fuel rail and spark.use noid tester i injectors.not showin any pulse?tachometer bounces when cranking...what next?