I own an ’05 Colt 3.0 V6 that’s done 119 000 km. I absolutely love my bakkie, but it’s got one elusive problem: every now and then it makes a loud rattling sound when started, almost like the motor’s full of loose nuts and bolts. The noise used to persist for up to 10 seconds, but lately it’s gotten worse and now lasts for about a minute or so.
To me, it sounds like the valve lifters are rattling until they get oil, but if I switch the engine off and immediately start it again, the noise disappears. To date I’ve done the following to the bakkie: replaced the cylinder head, fitted new valves, replaced the valve lifters and had the belts checked.
At this stage I don’t know what to do. In truth, I don’t think the problem’s terminal as the vehicle pulls well, uses no oil and the motor runs silky smooth. I’ve even taken it up to 170 km/h to be sure that nothing’s ready to pop. However, I’m concerned that something may go when I’m on a long-distance trip and far from home. Your help would be greatly appreciated.
Warren van der Merwe