iparnell

My MX5 based kitcar has developed an intermittent problem when driving at speed. The car is running a MSPNP and has only just developed this issue.

When i'm approaching speeds of around 85-90 (on track days) everything seems to die and loss of RPM, loss of Sync with MS. I was assuming this was a complete loss of power maybe due to alternator or even a coilpack issue. When this happens i can just turn off key and turn back on and its back to life.

I noticed yesterday when it did it that after the cut out it started kicking out smoke (unburnt fuel) until i turned key off and on, then it stopped smoking and the car ran perfectly normal.

After speaking to skuzzle last week i spent most of the weekend trying to simulate it by pulling and knocking fuses/wires to eliminate a dodgy connection but nothing would until car was travelling at speed then it happened. Replaced battery earth lead today just incase.

I was wondering if anybody has any thoughts on this?

Cheers

shuiend

iTrader: (24)

What year are the coils from. There have been several different types used over the years. Some are better then others, none of them are considered "great".

iparnell

It's a 1994 Mk1.