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Hi guys, I recently just swapped my old 308 engine from the hz tonner with a s/h engine (approx 10 months from its last start) and have noticed when I started it it has a loud knocking sound from the bottom of the engine. The engine was supposed to be in good condition with no knocking sounds. Before starting it, I put new oil and oil filter and let the engine rotate for a little while before actually firing it up. Im hoping its making the knocking sound because the oil needs to still go through the engine and not a crank problem. Any suggestions or advice would be greatly appreciated. THanks in advance Frank Edited by user Thursday, 1 February 2007 5:33:33 AM(UTC)
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Hi Frank, I would have probably not filled the sump with oil straight away, just circulate a mix of diesel and clean oil in there firstly for a couple of minutes running. This will clean up all the oil galleries and flush out all the nasties. Once this i
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Thnx for the advice, I will take the oil out and try your method to clean it out a bit. Would half a litre of diesel and half litre petrol be ok? Also did you mean take the sump off and put it in there or can i put the mixture straight into the oil fill
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You may even "prime" the oil pump. Take it off, and fill with oil, then put it back on. I had the same prob., Was running very noisy on the first start.
cheers
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No need to remove the sump, just a 50/50 mix oil and diesel straight into the filler, and drain out through the sump plug.
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Connect a remote accurate oil pressure gauge before you start it again. Pressure should come up fairly quick. Priming the oil pump would also be a good move.
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Thanks for all ur help guys, cleaned it out with the diesel and it sounded better than before. Just now it seems like there is no oil pressure as i can hear the noise from inside the rocker covers which could indicate the oil isnt getting up there. Im g
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