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RX-7 3rd Gen Specific (1993-2002) RX-7 1993-2002 Discussion including performance modifications and Technical Support Sections.

 
 
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Old 09-21-2013, 09:42 PM   #1
speedjunkie
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Hard to start

This problem started out back in April after Deal's Gap, but it's gotten much worse recently. It started out as a hot-start issue, only having problems when it was already warm. Now it practically won't start at all when it's warm and I'm having problems starting when it's cold now too, and that didn't used to be a problem.


Here are things I've noticed and the little bit of troubleshooting I've done so far, along with what I'm planning to do...

-I'm not losing or burning any oil or coolant.
-I tried the deflood method (pulling the green relay and turning the car over), but I didn't do what I normally do as the deflood method (pulling the green relay AND the spark plugs and turning the car over). There was absolutely NO change, so I don't think it's flooding
-Injector duty cycle is between 0 and 3% during cranking, but I'm not sure if that is an indicator because I'm not sure what it's supposed to be lol
-I haven't done a compression test yet, but I'm going to do a cold test and hot test
-I've heard of crank angle sensors being a problem too so I'm planning on checking those
-I've wondered about it being a failing coil, so I'm going to check those


And here are details about the engine and car...

-I rebuilt the engine last July and it has about 15k miles on it
-I have water injection, I'm injecting 2-cycle through an OMP adapter
-I'm running about 24psi of boost on a pretty safe tune
-I have stock coils with a HKS Twin Power
-I have ID 725s and 2000s that I just installed a year or two ago
-I'm currently using a Power FC but I'm switching to an Adaptronic Select


I can't remember anything else off the top of my head. Can anyone think of anything else I could check or what it might be?

Last edited by speedjunkie; 09-22-2013 at 09:24 AM.
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