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OK, I NEED HELP 76 280z Does not start!


cesar280z

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ok, I need your help guys, this is where i am

1 replace spark wires

2 replace fuel injectors, injector plugs

3 clean fuel tank, did the filter between fuel tank and fuel pump

4 new fuel filter

5 ran the fuel bible diagnostic ALL everything was a BIG OK , everything as it was supposed

OK, I tried to start the vehicle ... nothing

check again ...nothing

after I checked coil to distributor cap .. ok spark

then checked distributor to spark plugs .. ok spark

checked fuel filter between tank and fuel pump, and i see gas in the filter(FRAM filter).

sorry for the messy distribution of words, but i am on the hurry, hope you guys can give me any toughs about it.

I almost forgot I put 6 gal of gas after the tank was cleaned and also the car kind starts when I used carburetor cleaner

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We need dome history. When did the car last run? What happened since then? It sounds like you're not getting fuel. Or you're getting too much fuel. Did you pull the plugs? Were they dry? Did they smell like gas? Were they fouled?

Chuck

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Step 1. CheckSpark: (DONE)

Step 2. Check Fuel Flow:

Disconnect rubber hose at return line near engine fuel filter. (Disconnect where the rubber line goes to the hard line to the tank).Connect rubber line to empty 2 litre soda pop bottle and crank. If fuel flows into bottle then you have flow.

If no flow then you may have rubber lines to fuel rail crossed.

Step 3. Check Injectors:

They should "click" when you crank. Listen to them with a stethoscope or long screw driver. Plugs should also be wet.

Report back

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If the car starts when you give it carb cleaner, starting fluid, or other faux fuel, then you do NOT have an ignition problem.

First, find out if you have fuel pressure. Open a rubber line / fitting and see if fuel is present, under pressure. As always keep a fire estinguisher (far stankwasher!) nearby anytime you open a fuel line.

Next, use a stethoscope and listen to the injectors while someone cranks. Are they clicking? It's unmistakeable if they are.

If not, you probably have a problem where the ECM is not seeing that the engine is running, and "refuses" to supply fuel. Most likely this an input from the distributor to the ECM that is not being received. You can confirm this with a noid light on one of the injector wires.

I don't know if the ECM is supposed to fire the cold start injector when it cranks, EVEN IF it's not getting a timing signal. Maybe someone else can answer that. In that case it should catch, but die as soon as you quit cranking.

From there it's a matter of confirming the ECM has power, ground, ignition, and the appropriate inputs to tell it the motor is spinning.

Is there an aftermarket alarm or "kill" switch on this vehicle?

Are you sure you put gas and not diesel in it. Smell it, light a match to some of it.

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