Rotor arm problem?

[LHD_Kid]

My car was not running well, mis-firing a little and difficult to start. Once started ran ok...

What do you think the issue was?

[UrS4boy]

My car was not running well, mis-firing a little and difficult to start. Once started ran ok... What do you think the issue was?

Which century was the rotor last checked?

[LHD_Kid]

haha, this century, and not THAT many miles ago.... a lot less than 10,000 miles

[simon20vq]

Did you have a 12mm rota or 10mm fitted because I remember something about 12mm rota being wrong.

[UrS4boy]

haha, this century, and not THAT many miles ago.... a lot less than 10,000 miles

Has to be the wrong rotor (or cap) then because that isn't normal.

[UrS4boy]

Did you have a 12mm rota or 10mm fitted because I remember something about 12mm rota being wrong.

I think the proper rotor PN is 052905225C (10 mm).

The proper 3B rotor was also used by Toyota and is a PN 19102-02020 according to the archives. Marc S. from EFI Express has also posted on here as how to trim the tip of a 7A rotor down to 9 mm width to help cure spark hop.

Here is the thread. Unfortunately, Marc's photo has gone red [X]:

http://www.s2forum.com/forum/showthread.php?t=29457&highlight=spark+hop

[LHD_Kid]

Yeah. Narrow tipped one.

Not too worried as it will soon be converted to coil packs.

I was just shocked to see this as car was running nicely until suddenly it didn't start properly.

[s2driveruk]

Wow, that is toast!

[Vorsprung durch Technik]

Grew up with points ballast resisters,rotor arms and never seen anything even remotely 1% as bad as this.The cars got gremlin eating monsters there my friend.

[denniselbows]

I've had the same thing happen to me . It's amazing how the engine still runs with such a big piece of the rotor arm missing . Put a new rotor arm on and was all good again .