Blue Smoke on hard acceleration is due to piston blow-by. RESTORE will fix this in 500 miles providing the piston rings are not broken. Check the compression in each cylinder to find out if all cylinders are...
Blue Smoke on cold start up or overrun is usually due to one of two things:1) turbo seals damaged and leaking due to low oil, or a stuck EGR valve causing overheating;2) valve guide seals worn or shrunk...
Rattle that starts at 3000rpm - suspect low oil having caused hydraulic tappet damage and subsequent rattle noise (see 'Noisy Hydraulic tappets' above) try some RESTORE and make sure to keep the oil level at...
Black Smoke on start up may be cured by resetting the ECU by disconnecting the battery (make a note of your radio code or immobiliser code before you do this) or cleaning the EGR valve and inlet air filter.
White smoke on start up is due to water vapour (condensation) inside the exhaust and catalytic converter. Make sure you have a new fuel filter installed (to remove water from the fuel).
Failed MOT on emissions test. Assuming an oil and filter change has already been done and you have no broken components in the engine, RESTORE has a good chance of quickly reducing emissions to a passable...
Worn small end bearings. Small end bearings are fed by oil splashed up from the sump or by direct oil feed from the crank oil supply. By splash, the oil rebounds off the underside of the piston (cooling the...
Fledgling big end bearing knock. This is a tough one as we need to catch the damage as quickly as possible before the main and conrod shell bearings rotate on the crank. We have had very good results if the...
One cylinder ticks when cold. Check for a cracked exhaust manifold that closes up when hot, before looking at piston slap, noisy tappets, block charcoal canister, small end bushing and big end knock etc.
Mysterious oil loss - no drips and no blue smoke? Suspect that low oil has caused turbo seal damage and that the turbo is eating its own oil supply. If RESTORE doesn't work its magic in 500 miles then the...