Problem with a VAUXHALL CORSA 1.2 16v 2005 40k

Engine misfire when driven and fault codes stored for multiple cylinder misfires. Various components checked and replaced spark plugs, air flow meter, timing chain kit and EGR valve. Fault not cured and misfire still present. After further investigation the fault was caused by the carbon canister under the O/S/F wing being full of water and the fuel contaminated with water.

The fault was cured by replacing the carbon canister, fuel filter and draining and replacing the contaminated fuel in the fuel tank.

Due to the misfire fault it is also recommended to use Forté Advanced Formula Gas Treatment and Forté Advanced Formula Motor Flush to remove contamination from the oil and fuel system.

Thanks to Steve at Reno-Tech (North Wales) Ltd in Llandudno Junction, Conwy.

Problem with a VAUXHALL VECTRA 1.8L 16v 2000 210k

Excessive oil leak from cylinder head area, suspect oil leaking from head gasket.

The fault was cured by adding a tube of Forté Seal Conditioner into the engine oil and allowing a short period of time for the product to work.

Thanks to Adrian at Warmington Garage in Banbury, Oxfordshire.

Problem with a VW CRAFTER 2.5 TDi 2010 175k

Engine management light and Diesel Particulate Filter (DPF) light on, fault code stored for DPF blockage. Unable to regenerate DPF when driven, suspect DPF heavily blocked.

The fault was cured by adding Forté Diesel Specialist Injector Cleaner and Forté DPF Cleaner and Regenerator into the fuel tank, removing the DPF and manually cleaning with Forté DPF Off-Car Cleaner as per instructions. The DPF was then regenerated and reset using diagnostic equipment.

Thanks to Kevin at FRL Auto Services in Dartmouth, Devon.

Problem with a RENAULT CLIO 1.2L 1997 92k

Engine cutting out intermittently, suspect fault due to contamination build-up on throttle body and idle control valve.

The fault was cured by removing the throttle body and idle control valve, applying Forté Valve Cleaner to the components and allowing the product to soak for 5 minutes. The vehicle was taken for a road test after refitting the components with the engine performance restored.

Thanks to Ben at Fields Car Centre Ltd in Woking, Surrey.

Problem with a NISSAN QASHQAI +2 1.5L DCI 2011 41k

Diesel Particulate Filter (DPF) fault and vehicle unable to run due to excessively blocked DPF.

Fault caused by an air intake system leak preventing regeneration.

The fault was cured by repairing the air leak and removing the DPF to manually clean using Forté DPF Off-Car Cleaner as per instructions, carrying out an extended Forté New Generation Engine Flush, adding Forté Diesel Specialist Injector Cleaner and Forté DPF Cleaner & Regenerator into the fuel tank.

The vehicle was then taken on an extended road test.

Thanks to Tanya at Tanbury Ltd in Horsham, West Sussex.

Problem with a SAAB 9-3 1.9 TTiD 2010 82k

Vehicle running in limp mode and engine management light on due to Diesel Particulate Filter (DPF) blockage. Unable to carry out forced regeneration due to excessively blocked DPF.

The fault was cured by removing the DPF and manually cleaning with Forté DPF Off-Car Cleaner as per instructions. The DPF was then regenerated and reset using diagnostic equipment and taken on an extended road test with the vehicle power and performance restored.

Thanks to Darren at Alltecnique Ltd in Salisbury, Wiltshire.

Problem with a NISSAN QASHQAI 1.5L DCI 2009 60k

Excessive smoking and rattle from engine on start up.

The fault was cured by using Forté Clean & Protect, a 45 minute Forté Advanced Formula Motor Flush carried out adding Forté Oil System Protector to the new oil and Forté Diesel Specialist Injector Cleaner and Forté Advanced Formula Diesel Treatment to the fuel tank and carrying out an extended road test.

Thanks to James at Eric Falce Auto Services in Sidcup, Kent.