Technical help

[gatesy31]

my punto turbo keeps coking up just one spark plug any ideas please
also wanting to modify engine got filter and exhaust what else is there

 

[mad_colm]

what colour deposits are on the plugs?


Met Cognac 99 Brava 100 HSX, wish it'd clean itself!

 

[gatesy31]

grey/black looking

 

[pritch]

grey is OK usually, black points to a rich mixture or old engine. But on just the one? Not sure.

Spirito di Punto | M-reg 55SX, black, 5dr. Clear repeaters. Remote locking fitted, no light confirmation yet though - need relay fitted

 

[dave]

could be inlet valve sticking open or exhaust valve not opening enough

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