911 missfire problem

[Canada Col]

Could anybody give any input as to what could be causing a missfire on my 1979 sc. I took it out on the road yesterday and she was fine,so got her out of the garage today and washed and waxed the bodywork and now when I try to accelerate she runs really rough. When i was using the hose I was careful not to get too much water in the engine area. Any ideas where I should start to look for the problem.Many Thanks

[jester911]

You may have a crack in your distributor cap. If so it doesn't take much water to make it misfire.

[ossiblue]

If nothing happened except the washing, I would agree with Jerry. You could even have a "leak" in one of the high tension cables or connectors that will misfire with very little encouragement. Dry all electric parts thououghly and try again.

[jester911]

If you really want to get down to it let the car idle with the deck lid open. Preferably in the dark
take a spray bottle of water and give it a shot towards the dist. cap and wires.
If you have a light show then you have found your leak.

[Canada Col]

thanks guys, I have only had the car 2 years and only run it in summer,so I may go and change the cap, rotor,plugs and HT leads. Thanks Again

[Early_S_Man]

Please read the following thread all the way through, then check the green coax signal cable from the distributor on your engine:

coil to buy question

[Canada Col]

Thanks man ,I will look into the green wire more closely.

[stlrj]

It appears that a small amount of water is causing your ignition wires to short out too easily meaning your ignition wires may need to be replaced.

Cheers,

Joe