Ignition coils can be individually replaced without concern as to engine operation however fuel injectors are a different matter. If you replace one fuel injector, the other 7 fuel injectors should be removed from the fuel rail and professionally cleaned....
From your description, the cylinders are being oversupplied with fuel. If the fuel trims (from a scanner) are high negative, for sure there is too much fuel and a diagnostic would be required to determine why. Just as an example,...
Yes, you are absolutely on the right track but to complete the diagnostic job you will need the complete circuit diagram (Factory Service Manual, for instance) because you will have to test all the different segments of the circuit until...
If you are referring to the electrical solenoid within the injector, like any electrical part it can fail due to degradation of the insulation, wire breaks and so forth. The injector can be tested while still on the car and...
Leaks from fuel injectors are typically at the o-ring connection on the fuel rail. When you install the injector o-ring, you have to use a liberal amount of engine oil and twist the o-ring in along with the injector. Also,...
If the fuel injectors have never been serviced, that would be a good start on a car of this age. To do it right the injectors have to be removed from the fuel rail and sent out for cleaning to...
If you have white smoke out of the exhaust and are not getting low on coolant then you may have a cylinder that is low on compression or not firing. Have the misfiring cylinder compression checked on that side of...
You will need to have the fuel pressure checked to see if the fuel pressure regulator is leaking into the intake or an injector is causing the problem. Have computer scanned to get and diagnose the stored codes by a...
You should only have to replace just the one injector. I have seen injectors last over 20 years without an issue. If the injector is on the underside of the intake then you may want to replace the injectors as...
Check the engine for a misfire. Check the spark plugs and see if they are working and if there is park to the spark plugs. If the spark plugs are clean and there is spark to the spark plugs, then...
Check the fuel pressure and see if you have 30 psi or more at the fuel rail. If there is fuel pressure, then remove the fuel injector harness to each injector and check for power as the engine is cranked....
You can service the injectors on the car with an injector machine only and not a direct battery connection or injectors will be damaged. They are designed to only have intermittent power and ground at the same time and not...
Code P0153 is for Air/Fuel Ratio Sensor Slow Response Bank 2 Sensor 1. It's true that this code can be set by one or more failed fuel injectors causing a lean condition, but there are several other potential causes as...
You should not use battery power to hold open the fuel injectors or you will burn out the injector itself. They are designed to only be on for milliseconds at a time and not on constantly. Now that you have...
Hello, thank you for writing in. The type of repair you need to do is going to depend on what side of the clip you broke. If you broke the fuel injector side, you will have to replace the injector...
It's possible that a leaking injector or injector o-ring could be making your Pontiac smell like gas. These items could also cause driveability issues, such as the ones you describe.There are other potential causes as well though, such as a...
Hi there. The issue may be that when the vehicle was filled up, there may have been trash in the gas tank and it may have been stirred up into the fuel system which may have clogged up the fuel...
Hi there. Your vehicle is in a lean mixture state. The fuel system is not supplying enough fuel to the engine. Check the fuel pump to see if its working by putting on a fuel pressure hose on the fuel...
