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D16Z6 swap into 91 CRX Si won't start PLEASE HELP

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Old Mar 27, 2014 | 10:09 PM
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cannouu's Avatar
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Default D16Z6 swap into 91 CRX Si won't start PLEASE HELP

I just installed a rebuilt D16Z6 swap into my 91 Honda CRX Si. Car was already running perfectly on it's original engine and is stock MPFI. I did all the necessary OBD0 to OBD1 conversions, every sensor is connected and wired correctly. Engine turns over and has no check engine lights. Has spark, has compression, timing is right, and it seems to not be getting fuel. Car starts when I spray starter fluid in the throttle body. Fuel pump primes upon ignition just as it is supposed to, injectors switched from a working engine, inejctors been tested for resistance, voltage, and continuity to the ECU. What am I missing? Anyone have any suggestions? Thanks in advanced!
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Old Mar 29, 2014 | 09:11 AM
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video_voide's Avatar
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Default Re: D16Z6 swap into 91 CRX Si won't start PLEASE HELP

Originally Posted by cannouu
Has spark, has compression, timing is right, and it seems to not be getting fuel. Car starts when I spray starter fluid in the throttle body.
When you spray starter fluid you have the throttle plate open. Is the throttle cable lose? Maybe the throttle body is closed too much when you are trying to start it normally. Adjust throttle cable.
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Old Mar 31, 2014 | 11:58 AM
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Default Re: D16Z6 swap into 91 CRX Si won't start PLEASE HELP

A throttle cable problem wouldn't stop it from cranking over dude.

Most common faults with OBD0-1 conversions is it's either not an OBD1 distributor, the dizzy is bad (yes you can get spark and not fuel with a bad dizzy), one of the jumper harnesses is bad, or the ECU is bad.

1.) OBD1 injectors don't use a resistor box. If you have one installed and you're using OBD1 injectors, the resistance needs to be removed or you won't get adequate current.

2.) Injector positive voltage comes from the main relay and dead-end plug at the engine harness; the ECU only controls the ground.

3.) Pull the fuel rail, keep the injectors in the rail. KOEO, jump each injector wire from the back of the ECU plug (A1, A2, A3, A5) to a ground source (A26), verify they're opening.

4.) If they are, your ECU is bad. If they're not, make sure the engine is grounded to the chassis with no corrosion and the ground node at the thermostat is properly installed.

Report back if you still have problems.
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