Running Rough in Rain

[hayes3054]

Hi All,
I've noticed a pattern in my car's behavior. It tends to run really rough when I first start driving in the rain or wet conditions. I found that if I drive it at high rpms, it will drive ok and eventually the problem goes away after about 5 minutes. I'm thinking it's the spark plug wires, but I don't see any cracks in them and I didn't see any arching when I opened the hood. Any ideas?
Thanks,
Mike
87 325e

[richardkeith97]

i had the exact same problem in my eta. it was the plug wires.

[HR2L]

Hi All,
I've noticed a pattern in my car's behavior. It tends to run really rough when I first start driving in the rain or wet conditions. I found that if I drive it at high rpms, it will drive ok and eventually the problem goes away after about 5 minutes. I'm thinking it's the spark plug wires, but I don't see any cracks in them and I didn't see any arching when I opened the hood. Any ideas?
Thanks,
Mike
87 325e

What weight oil are you running?

[jlevie]

That does sound like the plug wires. There's a good chance they are original and are at least ten years past the point they should have been replaced.

[Dodobrown]

i got the same problem. but i have brand new bosh wires. i have no idea what i problem is

[gp.plus]

I too had the same problem, and it was the plug wires. You could try a little dialectric grease, very lightly apply it to the porcelain.

[Dodobrown]

i actually have done that. as of recent it has been good fingers crossed, im about to go for a ride in the rain