WRONG FIX........
Discussion
.......before I contact the garage.........take vehicle into main dealer with noisy hydraulic tappets as diagnosed by my regular specialist (who doesn't have right gear to set cam timing etc).............they say it's the timing chain..........20 hour engine out job, belt guides and tensioners changed..............and it still rattles.......it's used commercially and I've already lost 7 working days.........
So, before I go ballistic, what is legal situation and what would you expect???
So, before I go ballistic, what is legal situation and what would you expect???
This issue of noisy hydraulic tappets could be massively expensive in its own right. A tapping top end suggests that the valve clearances are incorrect; which shouldn't happen with such a set up. The tappets, when engine oil pressure is built, should "pump up" and set the valve clearance correctly. If they are not doing this then the issue could be simple or cost loads.
The tappets could simply be starved of oil through a blocked hole. In this case there are, if I remember rightly, proprietary flushing agents that may free them. It could be low oil pressure, which is disastrous for you. The tappets could be sticky in their old age; again flushing and re-oiling could solve the problem.
If that doesn't work then prepare to enter a whole world of expense. If it's an OHC engine, as described, the tappets are generally accessed by removing the cam. This entails taking off the cam gears and timing chain so you are stuck with the same problem.
Legally I have no idea.
The tappets could simply be starved of oil through a blocked hole. In this case there are, if I remember rightly, proprietary flushing agents that may free them. It could be low oil pressure, which is disastrous for you. The tappets could be sticky in their old age; again flushing and re-oiling could solve the problem.
If that doesn't work then prepare to enter a whole world of expense. If it's an OHC engine, as described, the tappets are generally accessed by removing the cam. This entails taking off the cam gears and timing chain so you are stuck with the same problem.
Legally I have no idea.
I suspect the issue here will be what was requested and what was put on the job sheet.
A specialist diagnosed a problem which may or may not be correct. Based on that diagnosis you asked a another business to take action. Exactly what did you aske them to do? Fix X symptom or do Y work? If you asked them to do a specific job and they did something else then there would be a breach of contract. The problem will be proving it.
In my experience, most dealers will put on the job sheet what they have done, not what the customer asks. I have had some very s
tty comments from main agents when I have refused to sign over a vehicle when I have asked them to fix a lumpy running engine and they then write replace ECU on the job sheet. They do the job, fail to fix the problem and then treat the complaint as a totally separate job and start replaceing other parts all at the customer's expense.
A specialist diagnosed a problem which may or may not be correct. Based on that diagnosis you asked a another business to take action. Exactly what did you aske them to do? Fix X symptom or do Y work? If you asked them to do a specific job and they did something else then there would be a breach of contract. The problem will be proving it.
In my experience, most dealers will put on the job sheet what they have done, not what the customer asks. I have had some very s
tty comments from main agents when I have refused to sign over a vehicle when I have asked them to fix a lumpy running engine and they then write replace ECU on the job sheet. They do the job, fail to fix the problem and then treat the complaint as a totally separate job and start replaceing other parts all at the customer's expense.Thanx for feedback chasps
In answer to Q's 2006 Mitsubishi Shogun 3.2 Di-D.
The note on main dealer job sheet was 'Noisy tappets' -they came back with 'it's the timing chain.....'
My specialist tried Slik 50 in last oil change and it was quieter.....for a week
Although does the timing chain sit in the same oil?
I noted that the test drive on completion of the work was less than 10 miles and from cold in the past the rattle was not apparent until it had warmed up......
I'm doing over 200 miles tomorrow, I think that will be the test....
I also tried on advice, bleeding the tappets by revving to 3000 for 15 seconds with 15 second gap five times -no discernible difference....
In answer to Q's 2006 Mitsubishi Shogun 3.2 Di-D.
The note on main dealer job sheet was 'Noisy tappets' -they came back with 'it's the timing chain.....'
My specialist tried Slik 50 in last oil change and it was quieter.....for a week
Although does the timing chain sit in the same oil?
I noted that the test drive on completion of the work was less than 10 miles and from cold in the past the rattle was not apparent until it had warmed up......
I'm doing over 200 miles tomorrow, I think that will be the test....
I also tried on advice, bleeding the tappets by revving to 3000 for 15 seconds with 15 second gap five times -no discernible difference....
Edited by melv on Sunday 30th January 14:16
There are addatives that can be used on hydraulic tappets and lash adjusters to reduce noise levels. It is not a permanaent fix but does work. I did 5000 mile oil, filter and addative changes oin my Volvo V40 (Mitsubishi engine with this symptom as a knon issue) and it made things better.
The work done does not appear to match what you asked for and has not fixed the reported symptoms, based on that I would be looking for them to fix it for free.
The work done does not appear to match what you asked for and has not fixed the reported symptoms, based on that I would be looking for them to fix it for free.
3.2 did engines are adjustable they do not have hydraulic lifters
They do have a weedy single chain set up that is prone to failure,the guide between the cams usually snaps off first then when it goes bang the engine will be scrap.
I have fitted a few of these and the engines are not cheap.
But they are a noisy harsh engine in comparison to other similar stuff,especially at low to medium rpm`s.
sounds like either they have set the valve clearences wrong,have mucked up the chain/guides or tensioner some how.
or worse still its suffering from low oil pressure.
They do have a weedy single chain set up that is prone to failure,the guide between the cams usually snaps off first then when it goes bang the engine will be scrap.
I have fitted a few of these and the engines are not cheap.
But they are a noisy harsh engine in comparison to other similar stuff,especially at low to medium rpm`s.
sounds like either they have set the valve clearences wrong,have mucked up the chain/guides or tensioner some how.
or worse still its suffering from low oil pressure.
Edited by seagrey on Sunday 30th January 16:07
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