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Thread: Engine dying

  1. #1
    Regular Member suggs1971's Avatar
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    Default Engine dying

    Engine is 2.0 dti. Well after all the head scratching for months, various garages looking at my car it looks like my engine is on its way out. I found a phone number for a m8 who used to repair my cars a few years ago and took my car round to him. He took it for a run and heard the louder noise under acceleration, he actually got the engine to make the noise when stationary. Anyway he said it looks like possibly big ends, piston slap or little ends. He did advise me to take the end cap off the egr valve to check the fork and roller wheel were free which they are, put a little bit of light oil on the wheel and its still the same. Thing is, which i cant get my head around is my car starts ok, (now ive had the leak off pipes done properly), tickover is fine (not lumpy, nice and smooth), acceleration is fine (no misfire, just a louder diesel noise/ knock), no sign of smoke on tickover or acceleration, no eml on, no oil light on. When underneath my car and revving the throttle it sounds to me like the exhaust is rasping or vibrating but the exhaust checked out fine at the tyre and exhaust place.
    If anybody has any other ideas i would be grateful.

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    Regular Member suggs1971's Avatar
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    Right the saga continues. Took my car to vauxhall today to let them have a look at the noise i have on the engine. They said, going off what i told them about good starting/ good running /no smoke etc, that the engine is ok and the noise is coming from one or more of the injectors so it looks like i'll have to book my car in to a diesel specialist to sort it.

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    Regular Member DaveW555's Avatar
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    I dont know if the injectors are readable on yours but if they are get a tech2 done and look at the injected quantities for each injector individually, you would only get diesel knock if theyre over fuelling, the figures you're looking for to indicate this would be a positive figure, generally if the figure is greater than +3 the injector is fuffed. this test needs to be done a warm engine on tickover. If its big end bearings thats not a biggie really, can all be changed in a couple of hours as you only need to remove the sump to do it, if its little ends or piston slap then its head off but still not overly bad to do so dont worry too much.

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    Regular Member suggs1971's Avatar
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    Cheers for that. Ive been in touch with a local diesel specialist and told them the problem i have, they said the problem isnt injectors as the car would misfire/ not run right. They have said the noise is pump timing which cant be adjusted so, dare i say this, pump is on its last legs.

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    Regular Member DaveW555's Avatar
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    I'd have to disagree with that tbh, I used to work for mercedes and its not always the case that you'd get a misfire with an overfuelling injector and mercs suffer with the injectors a lot, I still think you should get the injectors read first, if anything it will rule them out but thats where I would start.

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    Regular Member suggs1971's Avatar
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    My father in laws brother knows a guy who works for british steel on trucks/ locos etc is a proper diesel mechanic. The guy said he would have a look at my car, if he cant pin point the problem its still booked in at flavels diesel specialist at thornaby, they said they charge £56.00+vat to put my car on the diagnostics and check everything out. Just need it sorting as the noise is annoying and getting worse.

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    did you get it sorted mate as need my vectra diesel looking at?

  8. #8
    Regular Member suggs1971's Avatar
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    Took my veccy to my father in laws brothers mate last week who is a diesel guru, works for british steel working on diesel locos etc. Anyway he said the loud diesel noise isnt big ends or tappets, ruled out injectors and fuel pump as my car starts ok, good mpg 43.5 mpg at the moment on local driving, good acceleration, uses no oil or water, no eml on. He said for whatever reason the engine is noisier until the turbo kicks in/ 1000 to 2000 rpm, he advised putting a additive in the fuel tank which i have been doing for a couple of months. Ive had my veccy to another exhaust place as i was convinced there is a raspy tone to the exhaust towards the front of the car when revving the engine at low revs when stationary but they say it is ok, im still convinced there is a noise from the exhaust which i think is linked to the noise. Does anyone know what is inside the flexi part of the exhaust as i wondered if that had failed and that is what the noise is, the outer flexi part is fine as i know they can fail.

  9. #9
    Regular Member DaveW555's Avatar
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    There's nothing inside the flexi pipe, its just like a shock absorber kinda thing for the exhaust system to compensate for the rock of the engine under load. It could have a crack on the inner that you wouldn't necessarily see if the outer is all good, a good indication of this is if the outer is black and sooty. As for the knock I'm baffled now without seeing it for myself (or hearing it even lol).

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    Regular Member suggs1971's Avatar
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    Well im even more baffled now. Ive been putting the millers stuff in the fuel tank for a couple of months now and the loud diesel noise has been there all the time. The last couple of days since i put a double dose of the millers in, the mpg has been going up (was doing 42.7 mpg local driving now doing 43.8 mpg local driving) the mpg has never really changed when ive put the millers in before also the loud diesel noise seems to be quieter than it has been for a long time so im wondering if there been a bit of dirt in the fuel system, so im crossing my fingers now.

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