G'day I have a 2010 D40 manual 95,000 km purchased 2nd hand 6months ago my first diesel. Recently while towing my pop top caravan around 2t, I noticed a noise similar to a ticking or tapping which seemed to be coming from the drivers side of the engine while in 5th gear on the flat sitting on 90-95kms /h this lasted a short while and disappeared it is the 2nd time I have heard this now only while towing and in 5th gear, anyone have an idea of what this could be?
Engine noise when towing
- Thread starter Trout
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It's possibly a leaky EGR. Unlikely that it's a boost leak, but there's a possibility that something's wrong with the cooling fan too. In mine, I had that odd noise coming from my air box. Here's how to check them all.
EGR: it's the gold pipe that wraps around the front of the engine from the exhaust manifold to the intake manifold. Look for black soot sprayed from it.
Boost: check the piping between the turbo and the intercooler, then the intercooler to the intake manifold, looking for black oil coming out.
Fan: examine the back of the radiator. If you see any circular marks, you know the fan's been rubbing so something is wrong with at least one blade.
Air Box: check the cover on the side nearest the engine. Mine broke loose and at certain throttle applications mine sounded like a noisy diesel rattle, we thought it might have been timing chains!
It's possibly a leaky EGR. Unlikely that it's a boost leak, but there's a possibility that something's wrong with the cooling fan too. In mine, I had that odd noise coming from my air box. Here's how to check them all.
EGR: it's the gold pipe that wraps around the front of the engine from the exhaust manifold to the intake manifold. Look for black soot sprayed from it.
Boost: check the piping between the turbo and the intercooler, then the intercooler to the intake manifold, looking for black oil coming out.
Fan: examine the back of the radiator. If you see any circular marks, you know the fan's been rubbing so something is wrong with at least one blade.
Air Box: check the cover on the side nearest the engine. Mine broke loose and at certain throttle applications mine sounded like a noisy diesel rattle, we thought it might have been timing chains!
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