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I've been getting some contamination in the coolant system for a few months now, not sure exactly what it was but it looked like white spirits/diesel .. and Ive been worried about the fuel rotting the rubber hoses therein if thats what it was. On my last inspection I collected a cup of what looked like diesel out of the header tank.
3 weeks ago .. a hose 'T piece' blew off just as I had got back to my yard, we are at the top of a hill so the turbo had kicked in and raised the water pressure of the engine and because the rubber had gotten weak .. it blew/split the coolant hose off. Easily repaired, I then flushed the coolant with fresh stuff .. and a week later .. the same again.. more diesel in the header tank... so research on the net suggested a cracked injector sleeve, which was allowing leaked off diesel to get into the coolant.
I thought it was time to deal with it .. as I really didnt want to get stranded with another burst hose, but .. finding the offending component has been the problem .. the truck is a 2006 build with 200,000 kilometers on the clock .. so not outrageous by any means for trucks .. and an injector sleeve was indeed the likely culprit .. either that or a head problem.
This engine is a 5 cylinder unit and each cylinder has its own 'head' .. which is quite a nice system.
On Tuesday 19th Feb 2013 I dropped it off to the dealer to fix/investigate the problem.. and I got told later that day that cylinder number 4 was the problem and that 'head' , would have to come off, but the dealer had not ordered a sealant required to complete the job so I had to bring it back the next day, to be fixed, but I had some deliveries to do next day, so they rebuilt it .. and I picked it up on the Tuesday night.
To investigate the problem .. all the injectors had to come out, which meant removing all the valve rockers too, as thats how these engines are built ..
When I picked it up on the Tuesday night.. I noticed a slight tick from the engine I hadnt noticed before, but just put it down to the fact all the stuff had been removed and replaced.. It went back in on the wednesday, and I was told it wouldnt be ready till late afternoon on the Wednesday, but then got called to say it would be late late, like 8 -10 pm ,.. so I just said I'll get it next day.
On the Thursday when I picked it up, the tick was still there after the head had been taken off and the injector sleeve repaired, and after a bit of travel, I called the dealer, as I was a bit concerned as it had got a little louder, who said just bring it back in, so I did .. they then checked the clearances, and said cylinder No5 was a 'bit tight' on an exhaust valve (it was 4 that had the sleeve problem). And so after a couple of hours I left .. everything having been checked thinking... what was that ?
On Friday .. I started work as normal but after a couple of hours the noise returned .. but louder, then a second noise appeared .. a little blue smoke, and I just pulled up and stopped and phoned in to the dealer for recovery.
IMG_1764.jpg
The dealer never called me all day. I phoned him at 4.30 before close of business, and he told me the engine had 'bent a valve'
Later investigation revealed cylinder number 5 had 'dropped' a valve into the cylinder due to the dealers fitters not re setting the clearances properly. So a perfectly good engine was handed to them , on a perfectly good truck, and they've buggered it
what do you make of that guys ?
They have repaired it by fitting a new head, piston and liner and what ever valve components at their expense but I am not happy
3 weeks ago .. a hose 'T piece' blew off just as I had got back to my yard, we are at the top of a hill so the turbo had kicked in and raised the water pressure of the engine and because the rubber had gotten weak .. it blew/split the coolant hose off. Easily repaired, I then flushed the coolant with fresh stuff .. and a week later .. the same again.. more diesel in the header tank... so research on the net suggested a cracked injector sleeve, which was allowing leaked off diesel to get into the coolant.
I thought it was time to deal with it .. as I really didnt want to get stranded with another burst hose, but .. finding the offending component has been the problem .. the truck is a 2006 build with 200,000 kilometers on the clock .. so not outrageous by any means for trucks .. and an injector sleeve was indeed the likely culprit .. either that or a head problem.
This engine is a 5 cylinder unit and each cylinder has its own 'head' .. which is quite a nice system.
On Tuesday 19th Feb 2013 I dropped it off to the dealer to fix/investigate the problem.. and I got told later that day that cylinder number 4 was the problem and that 'head' , would have to come off, but the dealer had not ordered a sealant required to complete the job so I had to bring it back the next day, to be fixed, but I had some deliveries to do next day, so they rebuilt it .. and I picked it up on the Tuesday night.
To investigate the problem .. all the injectors had to come out, which meant removing all the valve rockers too, as thats how these engines are built ..
When I picked it up on the Tuesday night.. I noticed a slight tick from the engine I hadnt noticed before, but just put it down to the fact all the stuff had been removed and replaced.. It went back in on the wednesday, and I was told it wouldnt be ready till late afternoon on the Wednesday, but then got called to say it would be late late, like 8 -10 pm ,.. so I just said I'll get it next day.
On the Thursday when I picked it up, the tick was still there after the head had been taken off and the injector sleeve repaired, and after a bit of travel, I called the dealer, as I was a bit concerned as it had got a little louder, who said just bring it back in, so I did .. they then checked the clearances, and said cylinder No5 was a 'bit tight' on an exhaust valve (it was 4 that had the sleeve problem). And so after a couple of hours I left .. everything having been checked thinking... what was that ?
On Friday .. I started work as normal but after a couple of hours the noise returned .. but louder, then a second noise appeared .. a little blue smoke, and I just pulled up and stopped and phoned in to the dealer for recovery.
IMG_1764.jpg
The dealer never called me all day. I phoned him at 4.30 before close of business, and he told me the engine had 'bent a valve'
Later investigation revealed cylinder number 5 had 'dropped' a valve into the cylinder due to the dealers fitters not re setting the clearances properly. So a perfectly good engine was handed to them , on a perfectly good truck, and they've buggered it
what do you make of that guys ?They have repaired it by fitting a new head, piston and liner and what ever valve components at their expense but I am not happy
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and they were a big bunch of files for sure ... I keyed in my serial number and come up with all my relative data 
.. wish I'd done it ages ago 
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