Question about 1985 Chevrolet Cavalier

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It is cranking it has no gas coming out the injector

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Checking the fuel pressure, you have to install the gauge at the fuel filter, no fun. If you have a test light, use it to test the injector plug. Put one end on each side of the plug wires, crank the engine, if it blinks on and off it is good. Replace the injector. If not, check fuel and injector fuses. If they are good, Then you will need an electrical diagram to chase some wires before you replace the computer. Checking for power and grounds At the computer plug.

Posted on Nov 16, 2014


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Why won't it crank?

You need to check the fuel pressure regulator. If it is malfunctioning it won't allow enough fuel to the injectors or too much.

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My truck sat up for probably 3 or 4 years cranked and run fine yesterday but today it wont crank at all any ideas?

If it won't crank over, it's not a fuel issue, but a starting circuit issue. The gas may be stale, but if tank was full all that time, I don't think that would be a problem.
Pull off the small wire on the starter solenoid, and see if it has power when key is held in crank position. If power there, the starter or solenoid or the battery connections from battery to starter need to be checked or tested. If no power to solenoid when key is in cranking position, the ignition switch may be bad or the neutral safety switch (or the clutch start switch if a manual) or the starter relay needs to be checked.
If you get it cranking, and still no start, look down the throttle body bore and watch your injector spray pattern while the engine is cranking-you should see a fine, cone spray pattern coming from the bottom of the injector. If it just drips and no cone pattern, or no gas coming out, injectors need cleaning (probably from stale gas). Good luck.

Oct 23, 2012 | Cars & Trucks

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Getting gas to carb but no gas to injectors

check your crank sensor and ignition module. you need a crank signal for your injector, to pulse, use a noid light to check at your injector for the signal or use a scanner. also a bad fuel pressure regulator, can result in low fuel pressure. Maybe the fuse for the injectors are blown? hope this helps!!! check to see if you are getting 12 volts to injectors.

May 30, 2011 | Chevrolet V20 Cars & Trucks

1 Answer

It appears that the fuel pump in non operational.. it cranks but will not start. Where does the gas line come up to the injectors, so that I might pull the hose off, insert into a soda bottle and crank the...

There should be a small shrader valve on the fuel rail just remove the cap and press in on the valve if fuel shoots out under pressure the fuel pump is working if no fuel comes out, check the fuel pump relay and fuel pump fuse, if both of those check out ok the fuel pump is probably bad and will require removal of the gas tank to access the pump for further diagnosis....

Dec 07, 2010 | 1998 Chrysler Sebring

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I ran out of gas in my 99 chevy tahoe. will not start after gas was pumped. changed fuel filter and additional ignition parts & sensors. More likely the fuel pump or fuel injectors?

If you add a few tablespoons of gas directly to the throttle body after removing the air filter, or use starting fluid (ether), then if the car starts and runs after cranking, then it is a bad fuel pump.

Check the fuel pressure of the fuel pump rail to verify if gas is coming through the system.

If not, it's definitely a fuel pump.

If it were an injector, then it would still try to start on some cylinders assuming it's getting spark.

The fact that the problem started after gas was pumped, points to a fuel pump, as well.

So, I would go for the fuel pump if the fuel pressure is 0 psi or near that, or if one discovers that there isn't any gas coming through the piping when cranking.

Also, check fuses for the fuel pump and injectors.

Aug 17, 2010 | 2008 Chevrolet Tahoe

1 Answer

No gas coming out the injector and there is gas pressure to the injector?

Is there an injector pulse going to the injector?(an electrical pulse to fire the injector).
Is there spark at the plugs?
If the pickup in the dist is faulty you won't have either one.
If your vehicle uses a crank pickup with or instead of dist pick up....if it is defective pulse.
The above is 90% cause of no pulse....other is computer problem 10%.
If you do have a injector pulse and no spray.....and have fuel pressure....change the injector.
A quick check for spark is spray a little starting fluid in it.....if it starts on the fluid....spark is present.

Nov 03, 2009 | 1997 Chevrolet Blazer

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