Truck cranks but wont start ignition coil only has one top cap off. Checked to see if fuel sprays out and it does. What can it be? Rotor or ignition coil maybe??? Checked all fuses there all good. Checked all fuses under the hood and on side driver fuse compartment by the door everuthings good.

I had just put 20$ gas and drove maybe 10 miles so i know it got gas. What you think it can be? It is a 2005 Chevy Silverado ext cab 1500 v6 i think it's 3.4L motor if not 5.3L motor.

Answer: Well, it is either the 4.3L or 5.3L engine in your Silverado. That makes a big difference. The 5.3L has individual coils on each cylinder, so it sounds like you have the 4.3L engine. Not sure what you mean that the coil has "one top cap off".

If you have good fuel pressure, then i would say the engine does not have spark. The problem could be the ignition coil. Pull a few spark plug wires off the distributor cap and crank the engine to see if it has spark. If it has spark on some or is erratic, the cap and rotor might be bad. They are good for getting corroded. That would be seen as green corrosion on the rotor and cap tips. Moisture usually causes this. Chevy has a redesigned cap to prevent this.

If no spark at all, then yes the coil could be bad. Do a resistance test on it to check. Also could be an ignition module. This is much harder to test. Basically if you rule everything else out as being good, then the module is bad.


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