Put new set of plugs in it couple of days later it cut down in power, brought it home and stoped it tried to start ot again and it wouldnt fire the engine it would just churn and back fire took out the new plugs they were suited up and a bright yellow spark

When using starter fluid, remove air induction to the throttle body and spray a 1 to 2 second burst directly down the TB and promptly start.

Also a flooded engine will not fire, even with starter fluid. Pull a plug and see if it's soaked with fuel. If the plug appears dry and there is spark and it won't fire on starter fluid directly down the TB, then most likely the spark is too weak. Inspect cap and rotor for erosion. Look for signs of carbon tracks on the cap and the coil.

That could be water in the fuel tank, dirty fuel injectors, or a dirty fuel filter, just for a start.

Could be crankshaft sensor.

Hi justin, sounds like you have a headgasket problem are you going through any water? If not you may have a leaking fuel injector or faullty fuel pressure regulator. you either have fuel or water leaking into a cylinder causing it to miss fire on first start up.

if the plug is sooty your float is set wrong the air filter should have oil on it to catch dirt.sounds like a carb problem although it could be the power valve

Sounds like a bad crank sensor to me.

sounds like it might be your alternater a shop can test it to see if it is putting out any power

engine is pinking,predetonation of fuel or the fuel mixture is weak which can be caused by a vacumn leak on the inlet manifold ,such as the take off for the servo ,or the manifold bolts loose.Also the timing is set wrong which could be a fault with sensor or the sensor drive ring .Without the car in front of me i cannot really diagnose a fault like this ,either get the VW mechanic to have a look and if he thinks its electronic then take it to VW

I don't think this is a float issue. One way to check is to turn the gas off, take the bowl off the carb, hold the float up, and turn the gas back in. If fuel flows, the float needle is toast. It sounds suspiciosly like a worn topend, but it could also be a clogged jet ot fuel filter, or a faulty CDI.

Ignition coil or wire set?