03-09-2022, 05:55 PM
My Ruby has developed a disturbing knocking noise.
Having completed some 2100 miles in the last 5 months including the Eurotour and attending Moreton, a few issues had presented themselves involving worn bushes in the distributor, leaky fuel pump and carburettor problems. All these have, in recent weeks, been rebuilt and re-installed.
On completing these adjustments Ruby ran, albeit she felt and sounded a bit chuggy and clanky, but after several adjustments to the ignition first retarding then tweaking it back and forth, she sounds a feels so much better than she has ever been, I actually find myself having to take my foot off the accelerator as she just wants to go.
However since this recent work, I can now detect a definite knocking noise. At tick over, it cannot be detected even when revving the engine whilst stationary it is not there, it is not noticeable accelerating in first and second but appears at the top end of revs under load in third and all the time in forth. The rate of knocking increases with revs.
I have never heard this knocking before and is causing me concern as my experience in these matters is very limited. I do not want to ignore it, but do not want to start stripping down for no good reason.
Ruby has a 2 bearing engine with a high comp head and was rebuilt many years ago but has only done 3100 in total. The rebuild included new main bearings, new white metal bearings, bores re-sleaved, new pistons, valves etc. but it is the original crank and cam shaft.
Can anyone offer any advice or does anyone with experience of A7 engines reside in the Kent area who could have a listen or could point me in the direction of a trusted A7 mechanic or workshop dealing with A7's in the Kent area who could have a listen and offer some advice.
Any thoughts much appreciated
Cheers Denis S
Having completed some 2100 miles in the last 5 months including the Eurotour and attending Moreton, a few issues had presented themselves involving worn bushes in the distributor, leaky fuel pump and carburettor problems. All these have, in recent weeks, been rebuilt and re-installed.
On completing these adjustments Ruby ran, albeit she felt and sounded a bit chuggy and clanky, but after several adjustments to the ignition first retarding then tweaking it back and forth, she sounds a feels so much better than she has ever been, I actually find myself having to take my foot off the accelerator as she just wants to go.
However since this recent work, I can now detect a definite knocking noise. At tick over, it cannot be detected even when revving the engine whilst stationary it is not there, it is not noticeable accelerating in first and second but appears at the top end of revs under load in third and all the time in forth. The rate of knocking increases with revs.
I have never heard this knocking before and is causing me concern as my experience in these matters is very limited. I do not want to ignore it, but do not want to start stripping down for no good reason.
Ruby has a 2 bearing engine with a high comp head and was rebuilt many years ago but has only done 3100 in total. The rebuild included new main bearings, new white metal bearings, bores re-sleaved, new pistons, valves etc. but it is the original crank and cam shaft.
Can anyone offer any advice or does anyone with experience of A7 engines reside in the Kent area who could have a listen or could point me in the direction of a trusted A7 mechanic or workshop dealing with A7's in the Kent area who could have a listen and offer some advice.
Any thoughts much appreciated
Cheers Denis S