Fundi?? Posted May 7, 2019 Share Posted May 7, 2019 Hi all. My 300tdi has the exact noise shown in this video. Any idea what's making it??? Thank you Quote Link to comment Share on other sites More sharing options...
steve b Posted May 7, 2019 Share Posted May 7, 2019 It could be broken/missing valve stem cap(s) , it sounds too light to be the vac pump cheers Steve b Quote Link to comment Share on other sites More sharing options...
Maverik Posted May 8, 2019 Share Posted May 8, 2019 Tricky one, I'd take the fan belt off, turn all the pulleys individually to see if its anything to do with an ancillary, then I'd be looking at the tappets me thinks... Quote Link to comment Share on other sites More sharing options...
Yostumpy Posted May 8, 2019 Share Posted May 8, 2019 (edited) as above, tensioner bearing? not something touching the fan blades is it, zip tie ? Edited May 8, 2019 by Yostumpy Quote Link to comment Share on other sites More sharing options...
vulcan bomber Posted May 8, 2019 Share Posted May 8, 2019 I has similar on my 200TDi, it was one of the bolts holding the alternator together come lose and riggled its way out and into the fan. Quote Link to comment Share on other sites More sharing options...
Tetsu0san Posted May 9, 2019 Share Posted May 9, 2019 It sounds like the injection pump to me as I'm having the exact same issue on my 300Tdi Discovery. I've been running my Discovery on normal diesel and I decided to try some veg oil (as I run 25/75 in my 200Tdi 110 anyway) and ever since then I've had a fuel starvation issue. I've replaced the fuel filter, cleaned the gauze filter in the lift pump (it's a Delphi one), blew the fuel lines out too but I suspect my issue is in the tank or sediment filter. But for you to be sure try and get an engineers stethoscope (or a long screw driver) and see if the sound is coming from the injection pump. I suspect it is. Quote Link to comment Share on other sites More sharing options...
steve b Posted May 9, 2019 Share Posted May 9, 2019 Good point , you have reminded me of one I had in about 5 years ago that had a clear plastic in line filter grafted badly into the FIP feed line and had the same noise from the FIP . It turned out the connections on the in-line filter were allowing air in but not diesel out . I removed it and replaced the feed pipe and all good . The most strange thing of all was that performance was unaffected , which I found unusual . cheers Steve b Quote Link to comment Share on other sites More sharing options...
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