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You may have oil in the pan but that does not mean you have oil to the lifters, rods, etc. It sounds as if the oil pump has gone bad and not enough pressure to keep the lifters filled. To try an easy solution, change the oil filter. There have been occasions where the filter plugged up, there is a bypass to let oil through, but it is not the same as a good filter. If the pump is good it will fill the new filter in 30 seconds or so.
Lifter noise(s) can be a combination of things........ 1. High mileage on engine. 2. Not using the correct oil. 3. Lots of sludge build up in motor due to lack of oil changes and the quality of oil that you are using. Hydraulic lifters rarely fail but it does happen, given the conditions on how the car was maintained. I can offer you a solution but no guarantees on what might quiet this lifter down. It's a 50/50 chance. On your next oil change, I would recommend taking your vehicle to a facility that sells BG products. It's a company that formulates chemicals that have great cleaning properties to your fuel system and oil lubricating systems in your engine and at the same time, it is safe on all rubber seals in your engine. (Especially Higher Milage Vehicles) Ask for BG MOA to be added in you next oil change or if you do your own oil changes, you can find this product on line and can purchase from there. What the BG MOA does, it helps break up sludge and build up on the inside of your engine and helps to free up your valves, piston rings and noisy lifter(s). Hydraulic lifter(s) tend to make noise when they can't sufficiently pump up with oil due to sludge and build up blocking the oil inlet passage. Worn lifters on cold start up may be very noticeable but eventually the ticking goes away after engine warms up and the hydraulic lifter(s) had time to pump up. Make sure that you don't have a exhaust manifold leaking as well due to a crack or a failing exhaust manifold gasket. This can also emit a ticking noise in which can be misdiagnosed for a ticking lifter. A leaking exhaust manifold can usually be identified by the ticking noise getting louder and faster when accelerating and quieter and slower when decelerating. Ticking noise is loud on cold start ups but not noticeable at all when engine is at operating temperature. Hope this will help you out.
doubt if it would be an oil pump
the copper shavings are more likely to be from rocker shaft /arm bushes
If the bushes have failed then there will be a reduction in oil pressure putting the light on
cam shaft bushes and big end bearing failure is normally a grey metallic in the oil
talk with an accredited shop for a proper diagnosis.
I,m going to share something with you that i found out my van had ticking lifters and all i did was clean the oil pan filter
1. drain all the oil from oil pan 2. take oil pan off 3. once that is done you will see a long tube comming down by the crank. 4. remove the 1 or 2 bolts that hold the filter on 5. once removed you can give it a good rinse out with a gas/2stroke oil mix 6. once fully dry replace back to original location 7 put new oil pan gasket on 8 put oil pan back on 9 torque bolts down to 12.5 foot pounds 10 full with oil 11 start vehicle and let run
Sounds like worn main/ rod bearings. Too much clearance between bearings and crank shaft will make the oil pressure run low. If you have hydralic lifters, they too need good oil pressure to stay pumped up to keep the push rods against the rocker assembly. You may get lucky and have a bad oil pump.
The oil pump is in the oil pan. the lifters will continue to tick until they are properly oiled. Be careful not to use to thick of oil as this will only make the pump work harder and could further damage your engine.
Hi There, I would try adding a lifter quiet supstance such as nulon lifter quiet, may or may not be available in your country, Or try heading to a local auto store and look for a reputable brand name products, ie injector clean/ carby clean /lifter quiet/worn engine treatment. Below i have listed common problems related to yours that might be worth checking. Sometimes the oil that you may of put in may not be thick enough hence why youre getting more noise. it could mean yes that a lifter or shim is loose and needs adjustment, injector noise from fuel injectors if they get clogged up they tick loudly. Dirty fuel causing injector noise Low oil or incorrect oil level as in over full. Incorrect oil specification/ wrong Viscosity or grade. Leak or low oil presssure could be a blockage somewhere stopping oil circulating Worn oil pump not correctly pumping enough oil. Oil line blockage insufficent oil getting up to the lifters It coudl even be driveline related as in a C.V. joint coudl be loose/worn and ticking. Ive even seen cars where wire has been entwined aroudn the driveshaft and taps against the floor/wall Coudl be a fan if your fan runs off the engine rather then electric ticking against the houseing or it could also be a belt or bearing in one of you accesories ie a bearing in the aircondition clutch tha tmay be loose and is ticking. However start small and go from the cheapest option up to the dearest. Make sure you have a good listen while its running with the bonnet up and go through to try and find the source of the sound. Usually this is what the mechanics would- do anyway untill they find the problem. Hoipefully this helps so you dont have to take it to the shop. Cheers Steve