Tappet Identification
Posted: Mon Oct 31, 2011 1:43 pm
The hydraulic lifters in my DX engine are tappy as hell, and I'm getting pissed off with it. Tried flushing with ATF, tried nice fresh oil, no dice.
Now I'm not a rich man, so the prospect of buying a full set of 8 lifters is not one I relish. Thing of it is, I'm almost convinced it's a single tappet that's causing all the noise, as it taps with a frequency that's almost exactly 1/4 of the revs of the engine at idle.
So, I'm planning an attempt to nail down the tappet that I need to replace, without having to remove the camshaft anything up to 8 times and redo the timing each time. Does anyone have any ideas on how I would approach this? I was thinking about a long tube held to my ear and then placed near the rocker cover, but I'm not certain whether the rocker cover will just 'spread' the sound so that it's no louder in one place or another.
Or alternatively of course I could just bite the bullet and replace all 8. Whaddya think?
Now I'm not a rich man, so the prospect of buying a full set of 8 lifters is not one I relish. Thing of it is, I'm almost convinced it's a single tappet that's causing all the noise, as it taps with a frequency that's almost exactly 1/4 of the revs of the engine at idle.
So, I'm planning an attempt to nail down the tappet that I need to replace, without having to remove the camshaft anything up to 8 times and redo the timing each time. Does anyone have any ideas on how I would approach this? I was thinking about a long tube held to my ear and then placed near the rocker cover, but I'm not certain whether the rocker cover will just 'spread' the sound so that it's no louder in one place or another.
Or alternatively of course I could just bite the bullet and replace all 8. Whaddya think?