As one of the UK’s leading restorers of luxury classic cars, we come across all sorts of common problems that require the attention of our specialist engineers.
At KWE our aim has always been to ensure our customers receive a ‘better than new’ restoration service for their Jaguar XJS, XJ, XK and Aston Martin DB7 vehicles. So, we believe it’s important to share information that will ensure these vehicles maintain their reliability and roadworthiness.
We’ve noticed an increase in the number of classic cars being delivered to us for restoration with fuel system failures. Here we offer 7 preventative tips that will keep your vehicle in good condition and help avoid expensive remedial repairs.
Rust and sludge
The primary problem is due to the accumulation of rust and sludge in the fuel tank.
Even though high quality fuel filters are used in the fuel system, fuel pump damage and clogging of the injectors can occur.
Rust forms when moisture and air come into contact with unprotected steel. To prevent your fuel system from being attacked by rust it’s important to eliminate at least one of these materials.
3. Help protect the injectors by adding a petrol additive such as Forté Specialist Injector cleaner. For long term use Forté Advanced Gas Treatment (search eBay)
4. Avoid filling up at a petrol station if a forecourt tanker has recently visited to refill the underground storage tanks as this process can stir up the water in them which then ends up in your own vehicle’s tank
5. Have your tank and swirl tank emptied and cleaned out at least every ten years. Ideally have the tank treated internally so that the normally bare steel is coated
6. If your vehicle isn’t driven regularly then run your engine once a week for at least 15 minutes to keep the injectors working properly. Ideally, drive the car for a few miles to keep the brakes working and tyres exercised, while avoiding wet or salty conditions
7. The slow evaporation of the volatile elements of fuel results in a sticky and non-combustible residue. This can clog fuel injectors and prevent the car from starting and running smoothly. It’s therefore important to drain and replenish with fresh fuel if the vehicle is left for any length of time
Additional tips for preventing classic car rust can be found here. Happy motoring!
Are Kevlar-reinforced replacement coolant hoses good enough to use in your classic Jaguar XJS? Based on our experience, we’d have to say no. So which hoses are best to use? And what’s important to consider when fitting them?
Find out what KWE recommends for coolant and fuel hoses in our new technical note on the website: