Fiat Ducato 2.5 Help with Diagnosing issue - Page 2 - Motorhome Forums, Motorhome Discussion, Motorhome Chat

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post #11 of 13 (permalink) Old 19-07-2020, 13:32
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Originally Posted by incaheaven21 View Post
Hello to anybody that can help me.
I have a auto trail, and it has a large fridge, and while we are on the drive and attached to electric it is wonderful nice and cold, but when we hit the road, the fridge drips badly. We have it on the 12v, and we need to know what is wrong . Can anybody help with advice please?
Thank you.
Hi incaheaven n welcome to the forum. You might have been better to start a new thread with a title relevant to your query.

However, 12v is only used while actually driving, to help hold the current temperature of the fridge.

When stopped it should run either on gas or 240v.

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post #12 of 13 (permalink) Old 20-07-2020, 12:33 Thread Starter
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Anyon else got any (non frige related) ideas?
Originally Posted by cyberg View Post
I have a 1994 Ducato 2.5 diesel, coachbuilt motorhome, Eura Mobil.
Last year when leaving to go on holiday the engine lost all power and white smoke billowed out of the exhaust. Breakdown came out and couldn't repair.
I have had a mechanic looking at it on my drive since.
Fuel filter replaced.
Compression checked - all cylinders 220+ psi, consistent, so head/gasket OK.
Injectors were rattly so suspected them, all refurbed for £250, replaced, still issue, lots of white smoke and no power.
Fuel tank filter taken out and checked and cleaned - looked OK and not blocked.
A bit frustrated as its taken hours so far and were fairly sure was injectors.
Next to check is timing belt, is timing OK. Then after that all it can be is the pump, we think.
Any suggestions as to what it may be and any other tests to undertake?
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post #13 of 13 (permalink) Old 26-07-2020, 15:19
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Excess unburnt fuel usually causes black smoke, white smoke is usually engine oil (which is why blown turboís produce clouds of white smoke, the oil seal goes and the lubricating oil meets the hot exhaust gases inside the turbo)

To me it sounds as though there could be one of a few things. First suspect would be a hole in a piston OR knackered oil control piston rings on one of the cylinders. A broken piston ring would allow the cylinder to ďsuck inĒ some oil mist out of the sump on the induction stroke and then burn it on the power stroke thus producing white smoke
Having said that the loss of power tends to suggest one cylinder isnít providing its share of power and THAT points to a possible holed piston (but compression checks out OK)
Final thought, is your engine fitted with an EGR (Exhaust gas recirculating) valve? They can give all sorts of nightmare problems if jammed open. Some can be cleaned, others have to be replaced.

A decent diesel mechanic should be able to identify the fault easily enough.

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It's who you share the journey with (even if like me, itís in a caravan!)
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Last edited by Mrplodd; 26-07-2020 at 15:22.
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