Hi All,
"We've" bought a 53000 mile 08 Fiat Doblo 1.9 diesel (not even sure if its turbo) with a knackered engine. We were told its got a loud knocking noise and bought it with the intention of dropping another engine in. But, we had to tow it home from Diss in Norfolk and as that was 90 odd miles it would have been bloody hard work trying to steer it without the engine on and we needed lights and indicators, so we came back with the engine idling all the way, thinking what damage was done was already done and we were probably going to drop another engine in anyway. Thing is it idled perfectly all the way and didnt overheat, smoke or throw up any management lights etc.
So I had a quick listen to it tonight and on idle it sounds, well, err like a hollow noise, like the air filter was hanging off is the best way I can think to describe it. Now as for the knock when you rev it there is definitely a knock coming from the engine. I couldn't really locate the noise as I was on my own at the time and needed someone to rev it whilst I listened to it. But walking round it sounds like its coming from up the gearbox end. I cant be sure but it sounds louder at that end than the other. I'm going up the yard at the weekend and will take a stethoscope and get someone to rev it whilst I tap around with the stethoscope trying to locate it.
I was sat there thinking and I presumed this thing has a dual mass flywheel? I have no experience of a failed one of these other than I recall someone saying you get a vibration through the clutch pedal when its pressed down? Cant say I noticed that at all as the clutch was smooth in operation and worked well when I was shunting it back and forth in the yard. But could the knocking be the DMF?
I'll video it over the weekend and post up the vid so you can hear it. Anyone care to take a guess on what the knocking could be?
"We've" bought a 53000 mile 08 Fiat Doblo 1.9 diesel (not even sure if its turbo) with a knackered engine. We were told its got a loud knocking noise and bought it with the intention of dropping another engine in. But, we had to tow it home from Diss in Norfolk and as that was 90 odd miles it would have been bloody hard work trying to steer it without the engine on and we needed lights and indicators, so we came back with the engine idling all the way, thinking what damage was done was already done and we were probably going to drop another engine in anyway. Thing is it idled perfectly all the way and didnt overheat, smoke or throw up any management lights etc.
So I had a quick listen to it tonight and on idle it sounds, well, err like a hollow noise, like the air filter was hanging off is the best way I can think to describe it. Now as for the knock when you rev it there is definitely a knock coming from the engine. I couldn't really locate the noise as I was on my own at the time and needed someone to rev it whilst I listened to it. But walking round it sounds like its coming from up the gearbox end. I cant be sure but it sounds louder at that end than the other. I'm going up the yard at the weekend and will take a stethoscope and get someone to rev it whilst I tap around with the stethoscope trying to locate it.
I was sat there thinking and I presumed this thing has a dual mass flywheel? I have no experience of a failed one of these other than I recall someone saying you get a vibration through the clutch pedal when its pressed down? Cant say I noticed that at all as the clutch was smooth in operation and worked well when I was shunting it back and forth in the yard. But could the knocking be the DMF?
I'll video it over the weekend and post up the vid so you can hear it. Anyone care to take a guess on what the knocking could be?