The following warnings occurred:
Warning [2] Undefined variable $search_thread - Line: 60 - File: showthread.php(1617) : eval()'d code PHP 8.1.28 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/showthread.php(1617) : eval()'d code 60 errorHandler->error_callback
/showthread.php 1617 eval



Austinsevenfriends › Austin Seven Friends Forum › Forum chat... v
The colour of plugs when you take them out.

Thread Rating:
  • 2 Vote(s) - 4 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Linear Mode
The colour of plugs when you take them out.
John Mason Offline
Lifetime lover of car tinkering
*****
Joined: Dec 2017 Posts: 1,131 Threads: 66
Reputation: 8
Location: Nottinghamshire. Robin Hood County
Car type: Austin Ruby Mk1 1935
#1
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
Reply


Messages In This Thread
The colour of plugs when you take them out. - by John Mason - 06-07-2018, 05:02 PM

Forum Jump:


Users browsing this thread: 1 Guest(s)