W124 - High on Fuel Fumes... (monitoring)
So after taking Rhino for a short drive and about 90 mins later, there seem to be fuel fumes in the cabin and trunk. I cannot seem to isolate where the smell is coming from. I have in the past replaced the fuel tank (used), the vent valve, fuel sender (VDO), fuel filter, fuel pump, fuel hoses between the fuel filter and fuel pump, the MOT valve and even replace some of the rotten metal hoses that leave the charcoal canister and into the MOT valve with no success. On the MOT valve, to know if it's working is to simply hold it when the engine is running. If there is a continuous pulse to it, it is most likely fine. On mine, there wasn't a pulse of any sort and I suspected that it would have been dead with the valve closed. This means fumes from the charcoal can will not be ingested by the engine. When I found the donor MOT valve and fitted it, which is as simple as removing the clip for cables and just wiggling it out from the mount, the valve started pulsing which signifies that...