Why is there no fire coming out of disterbator cap 2001 Nissan quest

You have a large Evap leak.
Fuel cap not fitted ... that'll do it.

Question edited for clarity.
Question moved to sub category.

In the link. Pictures on the Image tab.

https://www.google.com/search?q=2001+nissan+quest+se+crankshaft+position+sensor+location

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if it is definitely coming from the power steering pump then you will have to change the pump. common problems associated with the pump is a whining or hard to steer once in awhile. still will need a pump change

No , need to pull the fuel tank out . Download 2001 Nissan Quest Fuel Exhaust Systems Section FE PDF Manual 10...

It will be located in one of the valve covers but nissan has used a fixed orifice crankcase vent sysrem which would just be a vacuum line fittings with a small opening inside the line from that valve or orifice would connect to manifold vacuum (intake maifold after the throttle plates)

Could be ECM or wiring.

change your oil.

Take the cap and button off the distributor and there is a lil plate under the cap ,unscrew the screw and see IR there is metal shavings and if it looks burnt up . If so replace the distributor . It happened to my mercury villager and it is a Nissan quest motor in it . Could be the problem ,,I couldn't believing it was that because it was getting fire but not at the right time the injector were injecting .

you have a bad blower motor. It is drawing too much current causing the resistor to go.

The other problem is your spark plug wires have bad insulation. Change them with at least 8mm diameter wires.
Ignore knock sensor code, it is responding to misfire.

http://groups.yahoo.com/group/villagerquest/

sounds like the heater core is leaking.