Johnc Posted June 18, 2022 Report Share Posted June 18, 2022 I set about adjusting my tappets yesterday as they were quite noisy. when i removed the rocker cover i found the front three valves/ rockers looked like they were covered in corrosion( these all cleaned up easily) These valves were also the only ones that needed any adjustment. is this a case of blocked oilways or something more terminal. thanks in advance for any help. John Link to comment Share on other sites More sharing options...
Iain T Posted June 18, 2022 Report Share Posted June 18, 2022 24 minutes ago, Johnc said: is this a case of blocked oilways or something more terminal. Try running the engine with the rocker cover off, can you see oil dripping from all rocker arms? Iain Link to comment Share on other sites More sharing options...
Wagger Posted June 18, 2022 Report Share Posted June 18, 2022 Run it ith the cover off and observe where the oil is flowing. Iain just beat me with that one. You could have a slight water leak from one of the front studs, but that would exhibit mayo in the rocker box. Link to comment Share on other sites More sharing options...
johny Posted June 18, 2022 Report Share Posted June 18, 2022 How often does it get driven? Come on be honest here😁 And also wheres it stored? Link to comment Share on other sites More sharing options...
Johnc Posted June 18, 2022 Author Report Share Posted June 18, 2022 i didn’t have time to run it with the cover off after i had adjusted the tappets, but might have tomorrow. I try to use it regularly, much to the chagrin of the rest of the household (wife and daughter hate it and youngest son thinks it’s really embarrassing). it’s usually out 2-3 times a week, and lives on the drive with a good quality cover over it. John Link to comment Share on other sites More sharing options...
Iain T Posted June 18, 2022 Report Share Posted June 18, 2022 A nice even drip is perfick. The only other way to calm the worry is to take the rocker assembly off and pull the arms along the shaft to see any wear or strip it down completely. Iain Link to comment Share on other sites More sharing options...
Pete Lewis Posted June 18, 2022 Report Share Posted June 18, 2022 yes the oil feed is up the rear pedestal it is supplied thro a hole drilled thro the head and takes oil from the rear camshaft journal this is where it gets its interupted oil supply the cam has a flat/slot in its journal so the rocker feed only gets a squirt on each revolution of the cam its not a full flow oil feed to the rockers so as said when idling you should see oil start to drop off the rockers and it tends to run down hil to the back of the head so a rag here will catch any you spill while observing was this corrosion hard stuff or mayonaise /hair cream stuff thats normal and its condensation thats formed by the cooling of the tin cover good longer runs will sort that out Pete Link to comment Share on other sites More sharing options...
daverclasper Posted June 18, 2022 Report Share Posted June 18, 2022 49 minutes ago, Iain T said: off and pull the arms along the shaft to see any wear or strip it down completely. I had wear on my shaft, I think it showed in the lower area, where the shaft is under the pressure of the springs?. I think this is also the area of the shaft, that has the grooves/scrolls that feeds the oil to this area and were non existent. The worn areas were not feeding oil , as showed visually when idling with cover off. Replaced shaft (rocker bores don't tend to wear as much, I understand?) and was ok. Link to comment Share on other sites More sharing options...
Iain T Posted June 18, 2022 Report Share Posted June 18, 2022 By coincidence I checked the rocker lubrication today. I fitted a new rocker cover seal and though I'd check as my rockers are bushed and reamed and have external oil feed controlled by a needle valve. A nice dribble from all of them 😊 All ready for Braxted Car Show tomorrow ☔🌞 Iain Link to comment Share on other sites More sharing options...
Johnc Posted July 14, 2022 Author Report Share Posted July 14, 2022 So finally got a chance to look at the oil flow to the rockers and all seems well. The reason that I got that chance is because the car has developed a misfire after a spirited run to see some friends yesterday. Both there and back on the M25 keeping up with the traffic. At the end of each leg the temp gauge was bang in the middle (ie not showing any signs of over heating ) but the oil pressure light would flicker on and off at tickover. There seemed to be more fumes coming from the oil filler cap so I removed the rocker cover and started the engine, to be greeted with this video attached. Are these fumes normal - I'm sure that I didn't see them when I had the cover off before. Thanks John Herald Engine.MOV Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 14, 2022 Report Share Posted July 14, 2022 well its not overly abnormal for this on a "getting worn" engine it could be down to oil temperatures and even oil quality after that then youre into piston rings and deeper wallet causes dobt it has anything to do withyoure missfire Pete Link to comment Share on other sites More sharing options...
Badwolf Posted July 14, 2022 Report Share Posted July 14, 2022 As a non mechanic I was intrigued that some of the valves/rockers/thingies appear to stop moving, even though others are still working. Is this a normal thing. If I had seen this on mine I would have been a bit worried. Link to comment Share on other sites More sharing options...
johny Posted July 14, 2022 Report Share Posted July 14, 2022 I think it must be a video effect - when the frames per second coincide with the oscillation of the rockers? Link to comment Share on other sites More sharing options...
JohnD Posted July 14, 2022 Report Share Posted July 14, 2022 1 hour ago, Johnc said: Herald Engine.MOV John, I get a message that you recorded this in a format (codec?) that I can't read, ".MOV", maybe that's a Apple format? Jhn Link to comment Share on other sites More sharing options...
Badwolf Posted July 14, 2022 Report Share Posted July 14, 2022 It just looks weird. Link to comment Share on other sites More sharing options...
Johnc Posted July 14, 2022 Author Report Share Posted July 14, 2022 1 hour ago, JohnD said: John, I get a message that you recorded this in a format (codec?) that I can't read, ".MOV", maybe that's a Apple format? Jhn Evining John it is indeed an apple product - I have converted it to MP4 - I hope that you can view it now Herald Engine.MOV.mp4 Link to comment Share on other sites More sharing options...
DanMi Posted July 15, 2022 Report Share Posted July 15, 2022 The rockers not moving is a video effect, as you can still see the pushrod rotating, which it wouldn't do if it was not going up and down Link to comment Share on other sites More sharing options...
Colin Lindsay Posted July 15, 2022 Report Share Posted July 15, 2022 1 hour ago, DanMi said: The rockers not moving is a video effect, as you can still see the pushrod rotating, which it wouldn't do if it was not going up and down It's like the old Western movies where the wagon wheels appeared to be going backwards. On 18/06/2022 at 17:53, Johnc said: I try to use it regularly, much to the chagrin of the rest of the household (wife and daughter hate it and youngest son thinks it’s really embarrassing). John You're not alone there, John... daughter won't get into it, wife hangs on grimly like it's a roller coaster. I've to go on a club run tomorrow in a Freelander as a compromise. Link to comment Share on other sites More sharing options...
johny Posted July 15, 2022 Report Share Posted July 15, 2022 49 minutes ago, Colin Lindsay said: It's like the old Western movies where the wagon wheels appeared to be going backwards. Yes, it makes you wonder whether you need a strobe to set your ignition timing or could just use your mobile phone camera🤔 Link to comment Share on other sites More sharing options...
JohnD Posted July 15, 2022 Report Share Posted July 15, 2022 3 hours ago, johny said: Yes, it makes you wonder whether you need a strobe to set your ignition timing or could just use your mobile phone camera🤔 Thank you, JohnC! Yes, Johnny, If you could adjust the frame rate, or the digital equivalent. The video was weird in that alternate rockers froze, while the others chattered away, but all must have been going at the same rate! So they all should have frozen, or not! Link to comment Share on other sites More sharing options...
NonMember Posted July 15, 2022 Report Share Posted July 15, 2022 5 hours ago, johny said: Yes, it makes you wonder whether you need a strobe to set your ignition timing or could just use your mobile phone camera🤔 2 hours ago, JohnD said: Yes, Johnny, If you could adjust the frame rate, or the digital equivalent. No. The frame rate is irrelevant. You may be able to freeze the view of the timing marks that way but not in a predictable position, so they're of no use. The strobe light isn't just "at the right rate", it's carefully and explicitly synchronized to the ignition. Link to comment Share on other sites More sharing options...
johny Posted July 15, 2022 Report Share Posted July 15, 2022 yes just kidding, Im not that tight so do have a strobe🤑 Link to comment Share on other sites More sharing options...
JohnD Posted July 15, 2022 Report Share Posted July 15, 2022 NM, I'd hate to contradict you (actually I love to!) but while of course a timing light is triggered by the ignition, the video is not. And, unless you can adjust the frame rate, or digital equivalent on the video, you can't use it to time the engine! John Link to comment Share on other sites More sharing options...
NonMember Posted July 15, 2022 Report Share Posted July 15, 2022 3 hours ago, JohnD said: NM, I'd hate to contradict you That's OK, because you didn't contradict me, you confirmed my point contradicting your own earlier glib comment, even if you then repeated the glib comment at the end. It's not enough to adjust the frame rate, you need to synchronize it. If you're still using the timing light then you can be lax on the image capture timing, of course, as long as the "shutter speed" is slow enough. Without a timing strobe light, the video would only be any good if the "shutter" were both very fast and synchronized to the ignition. Link to comment Share on other sites More sharing options...
Pete Lewis Posted July 15, 2022 Report Share Posted July 15, 2022 dont care how you film it , it doesnt help the oil fumes problem Link to comment Share on other sites More sharing options...
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