motor is craking and holding in

[negenelf]

hi all
i drove the car this afternoon and all went fine the engine runs smooth and good at half throttle but as soon as i go full throttle the enige is holding in making a bang noise.. at 120 in fifth gear its so worse the car doestn even pull up or goes faster anymore and it is driving in shocks ,but only if i go full throttle if i go half throttle the car runs fine and smooth..
what can that be , sorry for my english i am belgian so i don't know all the slang and specific terms
thx
stef

[negenelf]

hmm, took the car again to test it.. and guess what it runs smoothly and full power even on full gas... i did washed the car earlier maybe some water has sipped in the distributioncap (dunno if that is the word)
anyhow the car runs smooth and powerfull again
if somebody knows what has caused that problem plz inform me
thx
stef

[Candles]

It doesn't have a distributor, but yes, water on the ignition parts could have caused this.