Question

COROLLA CRANK THEN START

Hello, I have corolla spacio new, when I start the car on the first attempt it cranks for a few seconds and starts, but if I switch it off and start again it will start on the spot. Or if I drive for a few minutes and switch off for a few minutes then when I start again it starts on the spot, no cranking. I have changed fuel pump, Fuel injection system (nozzles),

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Starting problem

Hi, hansnlxguy; The first two tests I'd want to make are: a) Connect fuel pressure gauge, turn the ignition key to 'on' for about 5 seconds, then turn the ignition 'off'. Watch to see if the pressure drops off (leaking injector? faulty fuel pump?) b) Before starting the engine cold, connect a scanner and check what the coolant temperature sensor is reading. Did you replace the injectors with new, reman., or used? Was the fuel pump that you used a Toyota brand or aftermarket?
Good luck.
Loren

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Starting Problem

Hi landdchamp, I will do what you proposed to do, I have replaced injectors with used, the fuel pump used was a Toyota brand.

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reminds me of older cars

where the gas in line flowed back to the tank, but since it had some still in carburetor bowl it would crank normally and by time new gas was needed in the carburetor bowl it was there after fuel pump brought it back up the line. On fuel injected cars there is no "bowl" to keep some gas at the injectors if the fuel flows back to the tank, as in your case slowly back. My guess would be a shutoff valve i the pump that keeps the fuel in the line when the engine is cut off, so it will be immediately available when starting. In your case, I suspect that's not happening.

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Which system?

What led you to start swapping parts in the fuel system to begin with? Were there failure codes? Anything that made you certain the problem isn't related to ignition or (heaven forbid) compression?

Also, what model year is your car? I thought Spacio was an abandoned model name but your original post says "new".

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CAR CRANK ISSUES

I have changed Camshaft and Crankshaft Positions Sensors and reset car computer memory and now working fine.

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