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Thread: 300tdi problem

  1. 26th October 2014, 07:05 PM #1
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    300tdi problem

    Hey guys,
    I've got a 300tdi Discovery that was running well before developing what I thought was an exhaust manifold leak or a noisy tappet. After pulling over I discovered excessive blowby when I removed the oil filler cap and what looks like a sooty deposit around number 4 injector. What are the possibilities? Head gasket? Rings? I will inspect further tomorrow just want to get some input on possibilities and where to start.

    Pete
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    Last edited by discopete; 26th October 2014 at 07:49 PM. Reason: spelling
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  2. 26th October 2014, 07:11 PM #2
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    The soot around nr4 is a loose injector or blown seal. Tighten the injector retaining nut and see if that fixes it.
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  3. 26th October 2014, 08:01 PM #3
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    I will check injector tomorrow, but I'm now thinking there are two separate issues. The heavy breathing and blowby from the oil filler, which I know is not normal,and the injector leak. I hadn't notice either before this problem. Is it just a coincidence? Is there any way that they could be related?

    Pete
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  4. 26th October 2014, 08:08 PM #4
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    How do you know the blowby is excessive? The breather could be blocked which will make the blowby seem worse. Problems are unrelated.
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  5. 26th October 2014, 08:10 PM #5
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    Was down your way this arvo pete, you should've rung me I would've dropped by. The excessive pressure could be a head gasket leak, I would also remove number 4 injector and check the seating washer. I have some if you need a replacement.

    Jc
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  6. 26th October 2014, 08:25 PM #6
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    Quote Originally Posted by isuzurover View Post
    How do you know the blowby is excessive? The breather could be blocked which will make the blowby seem worse. Problems are unrelated.
    It seems to be a bit smoky and the oil doesn't smell right. When I checked it other times I don't recall seeing smoke. I'll double check in the morning.

    Pete
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  7. 26th October 2014, 08:30 PM #7
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    Quote Originally Posted by justinc View Post
    Was down your way this arvo pete, you should've rung me I would've dropped by. The excessive pressure could be a head gasket leak, I would also remove number 4 injector and check the seating washer. I have some if you need a replacement.

    Jc
    Didn't get back till late Justin, the tilt tray took it's time. I'll be in touch about the washers if need be. Thanks.

    Pete
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  8. 26th October 2014, 09:54 PM #8
    PAT303
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    Mine did the same thing 12 months back,it sounded like a steam train but was just the washer. Pat
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  9. 27th October 2014, 03:11 PM #9
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    Hey guys,
    a couple of new washers, thanks Justin, and all sorted. As you can see in the photo injector 4 had no washer and number 3 had just a plain thick copper washer. This has me a little worried about work quality on the rest of the vehicle.
    The blowby also seems to be normal when I compared it with our other tdis this morning. Must have had a bad day yesterday, wasn't thinking logically at all. Thanks for the help guys.

    Pete
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  10. 27th October 2014, 03:29 PM #10
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    Hi Pete, where did you get that vehicle from then, it wasn't a particular place in Lauderdale was it?....


    JC
    The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
    The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈
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