cliff.b Posted January 31, 2023 Report Share Posted January 31, 2023 Out in the Spitty to day.  Seems to be running well but on return I could here this on tickover. Can't here it when driving or when revs increased.  Thoughts please 🤔 VID_20230131_113050.mp4   Link to comment Share on other sites More sharing options...
Pete Lewis Posted January 31, 2023 Report Share Posted January 31, 2023 start with the simples  ,how did this start to clatter ??  make sure the exhaust is not fouling the chassis  or that deep sound may be time for a rebuild any loss of oil pressure ? Loose crank pulley ?? Knacked water pump ?? Pete  Link to comment Share on other sites More sharing options...
Clive Posted January 31, 2023 Report Share Posted January 31, 2023 Not wanting to worry you, but it sounds a bit "endy". Have you got an oil pressure gauge fitted? Or does the oil presure light flicker at idle? What oil and when was it last changed? Often the general wear can lead to very low oil pressure at idle, but once the revs are up the pressure increases. Of course, it could be a few other things. Link to comment Share on other sites More sharing options...
cliff.b Posted January 31, 2023 Author Report Share Posted January 31, 2023 Didn't notice this noise last year but heard it when I put the car in the garage after the first run this year. Oil pressure gauge showing what it always has done. Oil light off and pressure climbs within seconds of start up and no rattling or anything else. Sits at about 65psi when cold and falls when warmed. When hot, the lowest the gauge shows is about 10psi per 1000RPM and 10 psi at idle. This hasn't changed. Using Castrol Classic, can't see anything fouling anywhere, crank pulley fell off last year, and noise does sound similar, but checked and tight. Doesn't sound like it's coming from the water pump. Probably does sound more like it's from bottom end of engine. Link to comment Share on other sites More sharing options...
dougbgt6 Posted January 31, 2023 Report Share Posted January 31, 2023 Have you tried the long screwdriver stethoscope? It can help diagnose where the noise is coming from. Doug Link to comment Share on other sites More sharing options...
cliff.b Posted January 31, 2023 Author Report Share Posted January 31, 2023 5 minutes ago, dougbgt6 said: Have you tried the long screwdriver stethoscope? It can help diagnose where the noise is coming from. Doug Not yet. I will try that. Link to comment Share on other sites More sharing options...
Pete Lewis Posted January 31, 2023 Report Share Posted January 31, 2023 the crank nut may be tight but is there any float on the pulley if you give it some levering keyways are known to fail Pete Link to comment Share on other sites More sharing options...
cliff.b Posted January 31, 2023 Author Report Share Posted January 31, 2023 8 minutes ago, Pete Lewis said: the crank nut may be tight but is there any float on the pulley if you give it some levering keyways are known to fail Pete There didn't seem to be but will take another look. Removing fan belt made no difference.  I also changed the oil as I was going to do it soon anyway. Thought it had improved matters but went for a drive and when I got back I think it sounded the same as before.   Link to comment Share on other sites More sharing options...
johny Posted January 31, 2023 Report Share Posted January 31, 2023 run the engine without fan belt for a short time to see if the noise changes? Link to comment Share on other sites More sharing options...
cliff.b Posted January 31, 2023 Author Report Share Posted January 31, 2023 4 minutes ago, johny said: run the engine without fan belt for a short time to see if the noise changes? Did that, no difference Link to comment Share on other sites More sharing options...
johny Posted January 31, 2023 Report Share Posted January 31, 2023 Whats the engine mileage and rebuild history? Link to comment Share on other sites More sharing options...
Pete Lewis Posted January 31, 2023 Report Share Posted January 31, 2023 so its beginning to sound expensive   but it drives fine so it can still be something daft(and noisy) if there are no knocking underload you need to keep hunting   not an easy noise to determine  sounds like £££s  but hope its pennies Pete Link to comment Share on other sites More sharing options...
cliff.b Posted January 31, 2023 Author Report Share Posted January 31, 2023 21 minutes ago, Pete Lewis said: the crank nut may be tight but is there any float on the pulley if you give it some levering keyways are known to fail Pete Just thinking, previously the but fell off and it was running without it making a similar sort of noise as the pulley was moving. Could that have damaged the keyway and if so, what can be done? Hopefully not a new crank. Link to comment Share on other sites More sharing options...
johny Posted January 31, 2023 Report Share Posted January 31, 2023 even with no key if the nut is done up correctly pulley should be tight and wouldnt expect that kind of noise... Link to comment Share on other sites More sharing options...
cliff.b Posted January 31, 2023 Author Report Share Posted January 31, 2023 28 minutes ago, johny said: Whats the engine mileage and rebuild history? The engine was in the car when I got it. The engine number starts DM and ends ESS which I believe means it was a factory exchange unit at some point. Â It runs very well, there is zero smoke, uses very little oil. Â Odometer says 81k miles but who knows if that is genuine and if the engine has been replaced, when that was done. Â Judging by the way it generally runs and that everything has been painted, I was thinking it was rebuilt when the rest of the car was, but who knows. Link to comment Share on other sites More sharing options...
cliff.b Posted January 31, 2023 Author Report Share Posted January 31, 2023 28 minutes ago, johny said: even with no key if the nut is done up correctly pulley should be tight and wouldnt expect that kind of noise... The nut is tight. I just tried to get it off to try running the engine without it but it doesn't want to shift, even with the starter motor trick. Trying to move the pulley by hand, I can't detect any longitudinal movement but I can feel some slight rotational play. Â But would that be an issue? Link to comment Share on other sites More sharing options...
dannyb Posted January 31, 2023 Report Share Posted January 31, 2023 This sounds exactly I had on my spit. The fly wheel bolts had come loose. Take the starter motor out and see if there is any play. Mine started on the new Queensferry bridge and finally destroyed the clutch, starter motor and flywheel at John O'Groats. A nice 15hr recovery back to Essex. Link to comment Share on other sites More sharing options...
cliff.b Posted January 31, 2023 Author Report Share Posted January 31, 2023 45 minutes ago, dannyb said: This sounds exactly I had on my spit. The fly wheel bolts had come loose. Take the starter motor out and see if there is any play. Mine started on the new Queensferry bridge and finally destroyed the clutch, starter motor and flywheel at John O'Groats. A nice 15hr recovery back to Essex. Hmm, although difficult to pinpoint the noise I was thinking the lower rear of the engine. Was suspecting big end 3 or 4 but guess what you experienced would fit the bill. Was you noise only noticeable at tickover? And did any other symptoms develop? Link to comment Share on other sites More sharing options...
dannyb Posted January 31, 2023 Report Share Posted January 31, 2023 Yes it was first noticed at tick over and then after awhile all the time. Danny Link to comment Share on other sites More sharing options...
Pete Lewis Posted January 31, 2023 Report Share Posted January 31, 2023 loose flywheel sounds a good plan ................just a pain to get to the bolts  would explain noise at idle when unsimpathetic vibrations are at their best and less as it revs does operating the clutch play on the noise ??? Pete Link to comment Share on other sites More sharing options...
cliff.b Posted January 31, 2023 Author Report Share Posted January 31, 2023 21 minutes ago, Pete Lewis said: loose flywheel sounds a good plan ................just a pain to get to the bolts  would explain noise at idle when unsimpathetic vibrations are at their best and less as it revs does operating the clutch play on the noise ??? Pete I don't know as generally I haven't noticed it when driving and I gave been listening to it from out of the car with the bonnet up.  Easy enough to check though. 1 Link to comment Share on other sites More sharing options...
cliff.b Posted January 31, 2023 Author Report Share Posted January 31, 2023 Just wondering, do the flywheel bolts not have lock tabs? Link to comment Share on other sites More sharing options...
Clive Posted January 31, 2023 Report Share Posted January 31, 2023 Nope, just done up "tight"Â Link to comment Share on other sites More sharing options...
johny Posted January 31, 2023 Report Share Posted January 31, 2023 Recommended to use thread lock as well... Link to comment Share on other sites More sharing options...
cliff.b Posted January 31, 2023 Author Report Share Posted January 31, 2023 18 minutes ago, johny said: Recommended to use thread lock as well... Can you reuse the old bolts! Link to comment Share on other sites More sharing options...
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