Hi, First post on this group. Ive recently purchased a 1995 Ducato camper with a 2000 cc petrol engine (RFW I believe) I bought it with an overfuelling fault. It drove back the 150 miles at a reluctant 60 ish mph, There was/is a petrolly smell about it. The MAP had been replaced and I replaced the MAF. On the inlet manifold there are two small pipe connections, one to MAP one to MAF, If i attach both of them it wont tickover, one attached and it does, roughly.. The timing belt was replaced about 6 months ago. My query is.....WTF is going on? Ive heard the petrol pump might cause issues like this? How would I check that the garage timed it properly? Im just a bit flummoxed. Any help or pointers gratefully received.

Hi Farky. Some initial thoughts. Is the RFW engine original, or a later replacement ? If the cambelt timing is slightly off (e.g. 1 tooth early or late) it will make the performance flat but unlikely to cause over-fuelling. A smell of petrol normally indicates a leak of raw fuel somewhere. If the engine is over fuelled (injector duration too long) the exhaust in pre-catalyst days would be sooty and smell of unburnt fuel, but if you have a catalyst I guess it would change matters (until it fails under the strain). Assuming you have no petrol leaks, it could be that the engine management unit "thinks" that there is more air entering the engine than is actually the case. The airflow is measured directly by the Mass Airflow Sensor and indirectly by the Manifold Absolute Pressure sensor. However, once you are off idle, the Air/Fuel ratio should be modified accourding to the signal from the Lambda Sensor in the exhaust, to keep the catalyst happy. Not sure what the small hose is from inlet manifold to MAF, normally the MAF just sits in the large air inlet trunking. Your engine type may well have been fitted to Peugeot cars of the same era, so this could be a source of information. One last thought, if the coolant temperature sensor is faulty the engine will "think" it is under cold start conditions and richen the mixture. The sensor is often separate from the one that drives the temperature gauge, so just because the gauge works it doesn't mean all is well.

Thanks for your in depth observations Anthony 489, I'm certain the lambda sensor is new but the temperature sensor is worth investigating. I will check the engine number when the v5 arrives.

P.s, the mixture seems very rich going by the exhaust gases and heavy fuel smell from the exhaust.

I got this problem sorted, The air inlet pipe where it goes into the throttle body, the plastic pipe was linked, this was throwing the sensors way out. Having made sure the only air getting in was through the air intake I disconnected the ecu and switched my lights on to drain any residual power, this reset the ecu. A good fastish drive and it's now running sweetly. (Except for the tappets) lol

Farky, was this the Swift Mondial that was on Ebay a couple of months ago with the overfuelling fault? I saw that and thought it looked quite good and not too expensive. We have the same 2 Ltr petrol Swift Mondial van. If you got it sorted then you have a very good van for not a lot of money!

I have managed to acquire a full set of genuine Fiat Factory workshop manuals for a X230 type van (extremely rare!) so if you need any info, PM me. Also have a factory parts manual on microfiche so if you need part numbers, again PM me. Parts for the 2Ltr petrol are getting difficult to get hold of now.

BTW, best advice I can give is change the gearbox oil ASAP. Theres a known issue with water entering the'box and it can easily trash the gearbox in a short period of time.