Hi,
Does anyone know what is required to perform a compression test on a TD42? I am just wanting to check whether the rings cracked when the engine was overheated.
Thanks,
Richard.
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TD42 Compression Test
for the sake of $100 it is easier and at the end of the day probably cheaper to get someone else to do it for $100 or so dollars.
Break the fuel return line for instance and the cheap way out become a lot dearer than you initially thought.......
Spend the money and get a workshop or mobile mechanic to do it for you.
Break the fuel return line for instance and the cheap way out become a lot dearer than you initially thought.......
Spend the money and get a workshop or mobile mechanic to do it for you.
not as easy as pulling plugs and plugging in the tester...
You have to dismantle the fuel delivery system and pull the injectors out.
In doing so you have a few items to pull off and a few items that can be stuffed if not done right hence the fuel return line that I broke on my diesel when pulling it apart to reco the head......
then you have to reassemble and bleed the whole thing which shits me to high heaven.......And when you finish you stink like an old deisel dipped rag....
If it were mine I would pay and get it done......
You have to dismantle the fuel delivery system and pull the injectors out.
In doing so you have a few items to pull off and a few items that can be stuffed if not done right hence the fuel return line that I broke on my diesel when pulling it apart to reco the head......
then you have to reassemble and bleed the whole thing which shits me to high heaven.......And when you finish you stink like an old deisel dipped rag....
If it were mine I would pay and get it done......
I have one but I am in Canberra, where are you?
BTW a deisel compression gauge usually cost about $200 upwards plus adaptors at approximately $50 each. Thats why when someone does the check for you it costs more than a petrol engine plus the labour to perform the test.
BTW a deisel compression gauge usually cost about $200 upwards plus adaptors at approximately $50 each. Thats why when someone does the check for you it costs more than a petrol engine plus the labour to perform the test.
Don't ask me, ask them. I'm just runnin for my life myself.
Well they are all following you...
No they ain't, I'm just in front...............
Well they are all following you...
No they ain't, I'm just in front...............
turps wrote:Dont the glow plugs go into the head as well. So couldnt they just be pulled out and put the tester in there.
Either way, my old SD33 had to be done at the injector but most other engines can be done from the glow plug hole.
Don't ask me, ask them. I'm just runnin for my life myself.
Well they are all following you...
No they ain't, I'm just in front...............
Well they are all following you...
No they ain't, I'm just in front...............
mkpatrol wrote:Id do it for you if you were here but the hourly rate to go to Melbourne to do might shock you.
Did it blow the head gasket? How hot did it get?
It did not blow the head gasket but certainly got very hot. Wife driving and not looking at instruments, hot day, AC on, driving too fast and radiator working at reduced efficiency because fins clogged with mud. After cooling down and refilling with water, the exhaust was blowing white smoke and later inspection found air filter housing to be full of oil. Most likely cause was blown oil seal in turbo so I sent that off and get it back tomorrow. Second most likely was cracked rings according to the NRMA guys. Thing is that about about 1500rpm the engine was running smoothly which did not seem to agree with cracked rings so I am hoping that the turbo will fix it.
Richard.
rlaxton wrote:mkpatrol wrote:Id do it for you if you were here but the hourly rate to go to Melbourne to do might shock you.
Did it blow the head gasket? How hot did it get?
It did not blow the head gasket but certainly got very hot. Wife driving and not looking at instruments, hot day, AC on, driving too fast and radiator working at reduced efficiency because fins clogged with mud. After cooling down and refilling with water, the exhaust was blowing white smoke and later inspection found air filter housing to be full of oil. Most likely cause was blown oil seal in turbo so I sent that off and get it back tomorrow. Second most likely was cracked rings according to the NRMA guys. Thing is that about about 1500rpm the engine was running smoothly which did not seem to agree with cracked rings so I am hoping that the turbo will fix it.
Richard.
You would know if it had cracked rings as it would blow heaps of blue smoke and be running rough at lower revs & possibly rattling.
If the problem persists after the turbo has been replaced then the rings may have lost their tension on the bore which means you are up for the same thing anyway. Sometimes when rings have lost their tension slightly the engine will run reasonably well but will have other symptoms like poor starting and excess smoke/oil usage.
Sounds like you are on the right track as far as diagnosis is concerned, chack the basics first.
Don't ask me, ask them. I'm just runnin for my life myself.
Well they are all following you...
No they ain't, I'm just in front...............
Well they are all following you...
No they ain't, I'm just in front...............
Well I got the turbo back today and it looks like $450 wasted. The engine still runs very roughly and the valve cover vent (which I left disconnected) is passing huge amounts of gas. The exhaust is also full of grey/white smoke.
I am going to post a request to the main tech area for an experienced mobile diesel mechanic to come out and do the rest of the diagnosis. Once they have figured out what is wrong I can tow it over to an appropriate mechanic.
Regards,
Richard.
I am going to post a request to the main tech area for an experienced mobile diesel mechanic to come out and do the rest of the diagnosis. Once they have figured out what is wrong I can tow it over to an appropriate mechanic.
Regards,
Richard.
white smoke
white smoke is uncombusted diesel due to low compression, by the sound of it out the rocker cover vent is were all the compression is going, does the smoke/blowby reduce as the engine warms up?? the other thing is the injector tips could have been damaged by the heat, has the coolant level dropped???
see ya mav
Just read a couple of the feed backs now.
Have a mate who had a GQ turbo ute making similar symtoms. White smoke on start up wasnt to bad after it warmed up though.
His diagnosis after a compression test was bent conrod on no 5 and a dodgy vavle on 4. As it turned out, yes there was a bent valve on 4 but there was a bend in the head and lots of cracks.
This was caused by water though. But the bent/cracked head symptoms sound the same.
Have a mate who had a GQ turbo ute making similar symtoms. White smoke on start up wasnt to bad after it warmed up though.
His diagnosis after a compression test was bent conrod on no 5 and a dodgy vavle on 4. As it turned out, yes there was a bent valve on 4 but there was a bend in the head and lots of cracks.
This was caused by water though. But the bent/cracked head symptoms sound the same.
THOUGHT FOR THE DAY....
Yep, sounds like shes buggered im afraid, the money you spent on the turbo wasnt waseted as you should rebuild it anyway if you are rebuilding the engine.
Make sure you service radiator, fuel pump, injectors & I would put a full set of hoses on it to so there are no probs with the new engine.
Mayby think about a loud bell to ring as soon as it gets into the red, thatll get her attention next time
Make sure you service radiator, fuel pump, injectors & I would put a full set of hoses on it to so there are no probs with the new engine.
Mayby think about a loud bell to ring as soon as it gets into the red, thatll get her attention next time
Don't ask me, ask them. I'm just runnin for my life myself.
Well they are all following you...
No they ain't, I'm just in front...............
Well they are all following you...
No they ain't, I'm just in front...............
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