1 1

Gunson Colortune G4074 14mm Classic Engine Petrol Diagnostic Saver Tune-Up Plug

SKU: G4074

£90.54 GBP
£90.54 GBP
Sale Sold out
Taxes included. Shipping calculated at checkout.

Brand new Gunson Colortune 14mm thread diagnostic / tuning kit. Ideal for tuning classic cars. 

This colortune kit is a spark plug with a glass window that lets you watch combustion. Flame colour shows the air–fuel ratio: yellow = rich, blue-white = weak, and Bunsen blue = correct. Turn the mixture screw until you get Bunsen blue to set the engine for best economy and performance.

Kit includes:

  • 14mm short reach plug
  • Hexagonal adaptor
  • Angled cleaning brush
  • Crush washer
  • Full instructions

See my store for adapter to use this kit on other spark plug sizes.

See my store for other classic Car and Motorcycle tools. 

View full details
Product Product subtotal Quantity Price Product subtotal
Gunson Colortune G4074 14mm Classic Engine Petrol Diagnostic Saver Tune-Up Plug
Gunson Colortune G4074 14mm Classic Engine Petrol Diagnostic Saver Tune-Up PlugG4074
Gunson Colortune G4074 14mm Classic Engine Petrol Diagnostic Saver Tune-Up PlugG4074
£90.54/ea		 £0.00
Sold out
£90.54/ea £0.00