Background: 2005 Chrysler Grand Voyager 2.8CRD 138,000miles, regular servicing by myself, last oil and filter change approx 2 months ago, nothing unusual. Running well, occasional rough start, occasional tough warm restarts.
Unfortunately my trouble-free running has come to an abrupt ending. After doing some heavy miles over the past few weeks (1,000 in a week, 400 in a day, motorway constant running) we went for a 40 minute journey today. Going up several hills working the car hard accelerating up the hill, all still fine. On the last hill, halfway up the temperature started to go up, my temperature gauge is always rock solid on half, even sat in long traffic, etc, it rarely goes a notch above. Today it went a notch or two above, still below what I'd say was 10-to (the hr), I put this down to the long uphill. As we approached the top of the hill I got an oil pressure light flicker several times. I eased right off and was then coasting slightly downhill, temperature went down and the oil light went back out.
I pulled over (oil pressure flickered again) and shutdown. Checked oil dipstick and oil levels were normal, midway all the way, nothing else unusual, no oil marking, no oil drops, etc. Oil filler cap was clean, no creaming or other issues. Gently opening water, same there, usual level in expansion bottle (halfway), no oil film or anything else. Nothing else unusual at all.
I started back up, it laboured a little to start and was chugging somewhat, bit of a knock, revs seeked a little at idle then settled, oil pressure light went off.
I drove a bit further, after about 10 minutes, again after a slight incline oil pressure light flickered on, stayed on then went out again, again temperature rose slightly, and started to get a hammer-like noise, directly linked to revs. So I pulled back over and total stop. Again no other signs.
Towed it to my parents which is where it's sat now.
We've taken the aux and steering pump belts off to eliminate them (Noisy bearings on alternator at the minute).
We've just done another injector leak-off test, very little fuel leaked out the injectors so again these seem all OK.
No lack of oil, water, mixing or change to fluids at all.
Engine can be cranked manually via the pulley and it turns as normal (feeling the pressurisation, release, etc).
Starting it up and idling, it starts and runs, again hammer-like noise but not very prominent at idle, increase revs even slightly and you get a prominent hammer/tappety-like noise. No oil warning lights.
No engine management/lights (Haven't plugged in analyser yet, nor done key dance yet)
Have listened as much as possible to all parts of the engine, top rockers, injectors, bottom end, bell housing, etc, and cannot positively identify location of noise.
So now at a loss what to do next, whether worth proceeding as the potential issue from our thinking is loss of oil pressure due to bearings worn, big end, so a serious amount of garage time/effort to diagnose and potentially replace.
Opinions and thoughts welcomed as always please folks!
Question
andyb2000
Background: 2005 Chrysler Grand Voyager 2.8CRD 138,000miles, regular servicing by myself, last oil and filter change approx 2 months ago, nothing unusual. Running well, occasional rough start, occasional tough warm restarts.
Unfortunately my trouble-free running has come to an abrupt ending. After doing some heavy miles over the past few weeks (1,000 in a week, 400 in a day, motorway constant running) we went for a 40 minute journey today. Going up several hills working the car hard accelerating up the hill, all still fine. On the last hill, halfway up the temperature started to go up, my temperature gauge is always rock solid on half, even sat in long traffic, etc, it rarely goes a notch above. Today it went a notch or two above, still below what I'd say was 10-to (the hr), I put this down to the long uphill. As we approached the top of the hill I got an oil pressure light flicker several times. I eased right off and was then coasting slightly downhill, temperature went down and the oil light went back out.
I pulled over (oil pressure flickered again) and shutdown. Checked oil dipstick and oil levels were normal, midway all the way, nothing else unusual, no oil marking, no oil drops, etc. Oil filler cap was clean, no creaming or other issues. Gently opening water, same there, usual level in expansion bottle (halfway), no oil film or anything else. Nothing else unusual at all.
I started back up, it laboured a little to start and was chugging somewhat, bit of a knock, revs seeked a little at idle then settled, oil pressure light went off.
I drove a bit further, after about 10 minutes, again after a slight incline oil pressure light flickered on, stayed on then went out again, again temperature rose slightly, and started to get a hammer-like noise, directly linked to revs. So I pulled back over and total stop. Again no other signs.
Towed it to my parents which is where it's sat now.
We've taken the aux and steering pump belts off to eliminate them (Noisy bearings on alternator at the minute).
We've just done another injector leak-off test, very little fuel leaked out the injectors so again these seem all OK.
No lack of oil, water, mixing or change to fluids at all.
Engine can be cranked manually via the pulley and it turns as normal (feeling the pressurisation, release, etc).
Starting it up and idling, it starts and runs, again hammer-like noise but not very prominent at idle, increase revs even slightly and you get a prominent hammer/tappety-like noise. No oil warning lights.
No engine management/lights (Haven't plugged in analyser yet, nor done key dance yet)
Have listened as much as possible to all parts of the engine, top rockers, injectors, bottom end, bell housing, etc, and cannot positively identify location of noise.
So now at a loss what to do next, whether worth proceeding as the potential issue from our thinking is loss of oil pressure due to bearings worn, big end, so a serious amount of garage time/effort to diagnose and potentially replace.
Opinions and thoughts welcomed as always please folks!
Andy
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