Question about 1994 Honda Civic

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1992 mitsubishi precis and the fuel injectors will not work!

Have 68 to 70 psi fuel pressure and good spark, put fuel in intake and will start and run for bit. Fuel injectors will not work.

Would love some help.............!

Thanks in advance.........!

Ron

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  • 25 Answers

Replace fuel pump and fuel filter

Posted on Jun 25, 2009

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What would make a not start unless I pour gas into intake


Hi Clyde:
Since you mention "gas rail" I'm assuming fuel injected.
I'd check the fuel pressure in the rail. Should be around 40 PSI.
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This engine uses a CPI unit to deliver fuel to the cylinders. The CPI unit consists of a central injector that feeds fuel to the poppet valve that are right above the intake valves. The poppet valves require high fuel pressure in order to open and deliver fuel to the cylinders at start up.

The reason why it starts and runs if you add a little gas through the throttle body is that once the vehicle is running the intake is under vacuum. The poppets can open with less fuel pressure in a vacuum. This is a real common scenario with these style injection systems.

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spark and fuel pressure at the times while it not starting? I hope so.
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Drive it then once it will not start, quickly do the ohms test again and record all readings again and any readings that are lower are likely bad injector windings and you need new injectors.
Any questions email me at fixincars@yahoo.com please rate this advice

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