06-07-2018, 05:02 PM
I have just taken my plugs out for cleaning because although the engine is running apparently ok there was difficulty in starting it on the handle. When all 4 plugs came out they were all dry with no signs of oiling but were jet black with carbon soot. In the old days when lead was in petrol plugs (if the engine was running ok) came out a greyish colour indicating that all was right as far as petrol/air mixture. Now we are on unleaded petrol what colour should you see if the engine is running ok.
The engine does now start on the handle since the plug cleaning.
John Mason
The engine does now start on the handle since the plug cleaning.
John Mason