Ask Honest John

Most recently answered cooling system questions
I have a Peugeot 306 2000 model. I drove for about a mile yesterday and the car overheated up to over 100 degrees. Water was leaking from the water tank due to the pressure. Once opened it spurted a load...
I have a Fiesta 1.25 V reg and the heaters will not turn off. I've changed the heater valve and flushed and renewed the coolant but this seems to have made things worse. Please help?
I've owned this car for 5 years now and just recently I've noticed a change in my temperature gauge. Last winter, a few minutes into my journey, if I stopped at a traffic light, my gauge would go from...
I wish to avoid a the common head gasket failure on my MG TF I have approached my local garage who quote £430+vat to replace the cylinder head gasket, however they tell me that MG Rover fitted the upgraded...
My peugeot 306 is leaking coolant from the internal heater ducts into the foot well. We have just done a rad clean on the car as the water was not going round the system and the bottom of the rad was...
I have a two-year-old, 2003/53 Mercedes E320 CDi Avantgarde that has now completed 87,000 miles. The car has been serviced by Mercedes from new and, apart from one or two electronic niggles, has been essentially...
There's water loss somewhere, but I can't find out where. No visable signs of water loss. Engine runs well and there is plenty of power. No mayo in the radiator, but I have to fill up with water every...
I have a Ford Focus 1.6 (2004). The temperature gauge rises to normal within about 1 mile from acold start and the engine idles at the correct RPM (ie from cold start RPM to Normal Idle RPM.) After a...
I am interested in buying a Volkswagen Scirocco 1.4. However, I have to do a lot of short journeys (half a mile or so). Would this damage the supercharger/turbocharger if many of the journeys were done...
I have noticed that when driving up long inclines, the temperature (according to the guage) starts to creep up rapidly from 90 degrees towards 130. It returns to 90 once I level off or start going downhill....