Tuesday, October 25, 2011

Why would my 2001 pontiac grandam 4 cylinder not start after changing the fuel filter and spark plugs?

check to make sure you have all th wires on tight and ran to the right plugs
Why would my 2001 pontiac grandam 4 cylinder not start after changing the fuel filter and spark plugs?
I believe that you did not replace the coilpacks with the tune-up, which I have found to be required, Why you may ask ? Resistance changes.
Why would my 2001 pontiac grandam 4 cylinder not start after changing the fuel filter and spark plugs?
hmmm couple possibilities.



Got wires on plugs in wrong place. Check placement



Air lock in fuel filter.



out of gas.



you do need to replace coils thats rediculous, unless they were the problem to begin with
In some cases it possible to install a gas filter wrong but I think you've probably either air in the gas system line or the wrong gas filter or spark plugs or spark plug gap.There is probably a bleeder valve on the vehicles fuel rail that much looks like a bikes air valve that you can use to bleed the unwanted air out of the gas system. Check for this valve unscrew the valve bleeder cap and use a small screw driver etc to push the valve inside down and see if air comes out of it then try again to start it.Double check your air filter , spark plugs , PCV valve and the spark plug wire connections and make sure the spark plug wires are connected good and connected to the right ignition coil contacts and spark plugs too.



Hope that helps and best of luck.
First off, does the engine crank at all?



I am going to assume the engine cranks- check the fuel filter to make sure it was put in so match the flow of fuel to the engine (some fuel filters will not let gas reverse direction and flow back to the tank).

Another possible problem on the fuel side of it is that the engine may not be able to pull fuel through a dry filter, so you may have to prime the fuel lines with fuel and try again.



On the sprak plug side, how did you replace the spark plugs- is it possible the firing order was mixed up? If the engine's plugs are out of order, the engine would not start and at best would achieve a couple of puffs before dying.



To tell you more I would have to know what happens when you try to start the engine.

Let me know if you need any help!
several thing can cause it not to start. it could be the fuel is,nt reaching the injectors. maybe the fuel pump regulator is bad. also maybe it,s spark instead of fuel, like module or coil. also check the pump fuse and the fuel pump.