Omega Owners Forum
Chat Area => General Car Chat => Topic started by: TheBoy on 11 March 2017, 09:47:39
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As regulars will know, the Battlebus has been somewhat challenged when it comes to power. Well, with the help of that DTM fella, we had a little fettle with it on Tuesday evening, and think we've found the fault, or at least a big part of it - the intake manifold, like the 2.2DTi Omega, benefits from a bit of a clean occasionally.
MDTM, I believe, did take a couple of pics, so I'll see if he fancies posting them up.
Unfortunately, it wasn't playing ball on rebleeding afterwards, so had to leave it at a certain railway place, and get Mrs TB to come and get me.
Unfortunately, Mrs TB got about 20 miles, then came to a complete standstill, as the M1 was closed, and when she got off the motorways, the local roads were all at a standstill. So MDTM gave me a lift south, and Mrs TB creeped north.
MDTM then spend Thurs eve fitting a priming bulb, changing the leak-offs, and getting the car started.
Yesterday, Mrs TB dropped me off at MDTM's work, so he could take me back to Nottingham to collect the bus.
Performance? I need to run Tech2 over it, clearing out and resetting everything, but initial thoughts are its often still sluggish trying to accelerate medium/hard from lowish rpm (but responds much better with very light throttle, making cruising at 50mph much easier, as before I'd have to run through the gears). However, whereas before it wouldn't rev beyond 3000rpm, it now pulls properly to 4k and beyond.
So, huge, huge thanks to Marks DTM Calib for everything. Even if I did hear him mutter "I'm starting to bloody hate your car" ;D
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:y good egg that DTM.
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I've seen the pics. Well and truely gummed up!
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From the state of the inlet manifold it looked like you had been trying to run it on coal dust.
Oh, and from the paint code it would appear that the car is actually that rare silver colour though you wouldn't know by looking at it.
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(http://images.omegaowners.com/images/Jimbob/hosted_for_others/IMG_2419.JPG)
(http://images.omegaowners.com/images/Jimbob/hosted_for_others/IMG_2420.JPG)
(http://images.omegaowners.com/images/Jimbob/hosted_for_others/IMG_2421.JPG)
(http://images.omegaowners.com/images/Jimbob/hosted_for_others/IMG_2422.JPG)
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Jesus! :o ;D
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That'll fo it! :o :o
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Quite an achievement that it was running at all, really.
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I have never seen anything that bad, I am still somewhat suspicious of the MAF
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I bet neither of you were brave enough to put it in Mrs DTM's dishwasher for a clean ::) ;D
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bloody hell! :o :o
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:o :o
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Wow. :o That makes the average Mundano TDCi inlet look clear ;D
P.S - this would have been much more satisfying with an "after" pic :-*
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Yikes!
How manny miles did it take to get that full of crud?
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Hands were far to dirty to hold a phone after the cleaning sadly
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I bet!
For anyone else wondering... Hells teeth!! ....
(http://img.photobucket.com/albums/v716/ciderman/DSC00629.jpg)
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So .... just what was that crap? :-\
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So .... just what was that crap? :-\
Oil, oil fumes and dust.
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So .... just what was that crap? :-\
Deisel poo
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Last one I had was cleaned with paint stripper, come to think of it I think I left that with you.
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So .... just what was that crap? :-\
EGR soot - fine on it's own
Oil breathers/turbo oil - fine on their own
combine the two... SCHMOOOOOO!!!
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Last one I had was cleaned with paint stripper, come to think of it I think I left that with you.
Yes, was going to fit that (identical between Omega and Zafira), but swirl flap actuator had gone faulty. Still, the cleaning only took about an hours :)
Having yours to hand did help us find where the bolts were though ;D
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I have never seen anything that bad, I am still somewhat suspicious of the MAF
As was I, but I think first port of call today is to see why the turbo ain't provide much boost at 3000rpm when I plugged in Tech2 earlier ::)
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Wastegate actuator freed off today, in the warm, dry confines of chrisgixer's garage (thanks chrisgixer, and thanks to Mrs CG for breakkie, complete with smiley faces, that made my day :D).
Boost readings 'better' on standstill Tech2 tests, but still poor.
Swapped boost pressure sensor for one that VXL V6 gave me, readings marginally better, but still poor (1.3bar at 3k rpm).
Gave it a run, miles, miles better now the turbo is able to spool up at lower revs. Quite drivable in fact, but I reckon still a bit down on power.
How long does the smell of split diesel around the engine last, as it still reeks of the stuff - while I had undertray off earlier, did try to mop up all that I could see.
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Well done :y
To answer your last, ages ;)
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Well done :y
To answer your last, ages ;)
Definable? 50 miles? 100 miles, 500 miles?
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I would er on the side of 1-500...
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So .... just what was that crap? :-\
EGR soot - fine on it's own
Oil breathers/turbo oil - fine on their own
combine the two... SCHMOOOOOO!!!
Ta. I think that SWMBO's Astra must've had similar problems though the car was written off before I got to the bottom of it.
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I would er on the side of 1-500...
OK, ta, I'll try to use it all week for work, that will rack up most of those 500 miles :y
I need to it to be good for Saturday :)
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Somewhere I have a DTi MAF, if I can find it I'll be passing yours a couple of times this week.
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Is the air filter ok? Exhaust not blocked? Vac all ok
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Does this have a VNT setup?
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No, standard waste gate system.
For me, we know the inlet is clear now and it revs up to the red line which was not previously possible.
So now its a case of why its the turbo struggling to boost (turbo is know good), this usually means air starvation, vacuum fault so the waste gate is not closing, restricted exhaust so the turbo cant spool up or the EGR is open (it does not appear to be but it would be interesting to compare the one fitted with a second one to see if the sprung force on the plunger is the same).
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How can I tell if exhaust is blocked? I'll go out and check air filter at lunchtime, as it's probably still the one I put on shortly after I got it.
Following the intake clean last week, and the wastegate actuator being freed off yesterday, its "good enough" for now.
I *really* need the car next week, so bit reluctant to touch it for a couple of weeks, for fear of making it worse. So this saga may continue again in a couple of weeks ;D
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Vac all ok
There are, contrary to what I said, Tech2 tests, and both the swirl flaps and wastegate actuators move (fully, as far as I can tell) at idle. Unable to test EGR one, as no visible movement, but VXL V6 did give me a spare EGR, so might pull mine out at lunchtime, and compare spring strength to VXL's one.
Is it possible the wastegate actuator arm needs adjustment? The other thing that crossed my mind, is would the wastegate start to clog up enough that it wouldn't close fully, thus not fully spooling turbo?
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I still do have a little chuckle at the person who loves RWD and 'POWEEERRR', after years of pi$$ taking of my 2.2. Now has a diesel powered, FWD, 7 seater mummy bus ;D ;D
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I still do have a little chuckle at the person who loves RWD and 'POWEEERRR', after years of pi$$ taking of my 2.2. Now has a diesel powered, FWD, 7 seater mummy bus ;D ;D
Its only used when I have to do my bit for the old'uns. I'm not allowed to drive properly with old people, as old people's bladders are always as strong as younger ones.
I should have bought a petrol one in hindsight. Ho hum.
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Vac all ok
There are, contrary to what I said, Tech2 tests, and both the swirl flaps and wastegate actuators move (fully, as far as I can tell) at idle. Unable to test EGR one, as no visible movement, but VXL V6 did give me a spare EGR, so might pull mine out at lunchtime, and compare spring strength to VXL's one.
Is it possible the wastegate actuator arm needs adjustment? The other thing that crossed my mind, is would the wastegate start to clog up enough that it wouldn't close fully, thus not fully spooling turbo?
You won't find that much gunk in the exhaust side generally as it runs hot and tends just to be carbon and not a carbon/oil mist mix.
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How can I tell if exhaust is blocked? I'll go out and check air filter at lunchtime, as it's probably still the one I put on shortly after I got it.
Following the intake clean last week, and the wastegate actuator being freed off yesterday, its "good enough" for now.
I *really* need the car next week, so bit reluctant to touch it for a couple of weeks, for fear of making it worse. So this saga may continue again in a couple of weeks ;D
Easy way to check is exhaust is to disconnect the front pipe to join and see if the turbo achieves required boost pressure.
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Other simple thing to try (but go easy) is to connect vac directly to the waste gate actuator....and see if it overboosts.
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(http://i14.photobucket.com/albums/a319/IamTheBoy/zafira/BFEF0570-FF18-4548-9C36-33CE6B5F5A40_zpsomnqctct.jpg)
Not too bad, but could be better.
Hoovered most of the stuff off, and turned it 180 degrees
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I forgot to add, actuator setting is dead easy on these, simply remove the retaining clip from the actuator arm and fully close the waste gate, the actuator arm should just slide over the waste gat connection and apply a slight sprung load.
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(http://images.omegaowners.com/images/Jimbob/hosted_for_others/IMG_2419.JPG)
(http://images.omegaowners.com/images/Jimbob/hosted_for_others/IMG_2420.JPG)
That was what a quick peek in the inlet of my GDI Legnum revealed, when it began to idle unreliably. That was the result of early direct petrol injection and lots of EGR. Power loss was unnoticable, because it had none to start with. When I added up the cost of sorting it, a rebuilt throttle body, and new suspension to about £1500, I sold the car for the £300 I had paid for it a year earlier.
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Where is the MAP sensor on these?
VWs used to have a rubber hose between inlet manifold and MAP sensor (when it was located in the ECU). The rubber hose is prone to blocking which screws up the boost reading.
Later ones have a MAP sensor on the pipe between the intercooler and the inlet manifold but this can still get blocked and give wrong (or sluggish readings)
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MAP is bolted directly to intake on these.
I have tried another MAP, just in case :y
Also swapped over EGR at lunchtime, though the replacement (thanks again VXL V6) felt the same stiffness as original. No difference on Tech2 readings. Will 'give it some large' on the way to work tomorrow to see if any difference - not expecting any.
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so bit reluctant to touch it for a couple of weeks
Chance would be a fine thing...
Will 'give it some large' on the way to work tomorrow
"That didn't go well"
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Should probably start a poll ::)
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Compression OK?
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so bit reluctant to touch it for a couple of weeks
Chance would be a fine thing...
Will 'give it some large' on the way to work tomorrow
"That didn't go well"
;D ;D ;D Details.... :D
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I know.....
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I know.....
Of course you know......he probably blames your shoddy workmanship for the problem :P
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I know.....
Of course you know......he probably blames your shoddy workmanship for the problem :P
Have you spoken to him also?
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Fixed at lunchtime, then put all the electricity back in. Just taken it for a spin, and put more go-go juice in it.
Not convinced its starting as well as it should, but fuel was low. Tomorrow morning will be the test.
So, tomorrow, see if the bugger starts, then if it does, give it a ragging.
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Snapped the aux belt then ::)
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Snapped the aux belt then ::)
no, I hope not, looks a 'mare to change ;D
Apparently diesel engines need the fuel to go in the engine, not on the engine.
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Snapped the aux belt then ::)
no, I hope not, looks a 'mare to change ;D
Apparently diesel engines need the fuel to go in the engine, not on the engine.
You ran out then...
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Don't tell him, Pike!
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Snapped the aux belt then ::)
no, I hope not, looks a 'mare to change ;D
Apparently diesel engines need the fuel to go in the engine, not on the engine.
It's not too bad IIRC, the tensioner is a bit stronger than a V6 one though! Not sure what access is like on a FWD application.... Always worth checking the crank pulley as it's a harmonic damper type... as you don't want this to happen:-
(http://i202.photobucket.com/albums/aa163/vxl_v6/03022012407.jpg)
They start with a few minor cracks... then....! LOL