B
Bert
Guest
My 2006 Terrano 2 sounded very "tappy"so I decided to adjust the tappets, probably the first adjustment from new. The Top Dead Centre marks on the crankshaft pulley and engine block are very small and not easily seen so with a focussed torch and a drop of white paint I made them more obvious. I could not see a convenient way of getting a spanner on to the crankshaft pulley retention nut to turn the engine over so decided to select 4th gear and push the car until the two marks aligned to find TDC. It's a heavy motor: fortunately I have a slight slope in the drive so pointing the car downhill made pushing the car a few inches at a time possible and I put a couple of wheel ramps a few feet in front of the car in case my control of the car's movement with the handbrake caused a bigger movement than I wanted! Based on advice from this site I had decided to adjust cold thinking that at my rate of progress the car would have cooled down in any event by the time I had finished the adjustments. I adjusted valves 1,2,3 and 6 and then turning the engine over for two revolutions to TDC again adjusted 4,5,7 and 8 as the manual advises. As the engine was cold I set the clearances to
a tight .012 in as against the .010 in recommended. On the subsequent test drive the tappets got noisier as the engine warmed up! So knowing exactly what tools I needed and having had a practice at adjusting the tappets from cold I went home and did the whole thing again with a hot engine setting the tappets to .010 and managed the whole operation quickly as I knew exactly what to do. This time the engine got quieter as it warmed up and when hot was much smoother and quieter than before. My "trouble and strife" agreed with me so it was not wishful thinking on my part! So do it hot!
A query: is it possible to check that the turbo wastegate valve is working properly with the car at rest and the engine running at over 3200 rpm? The threaded rod connected to the flap valve in the exhaust sytem never seems to move and I am wondering whether it is adjusted correctly. I think that the operating lever(the bell crank in engineering speak) controlling the exhaust valve should be at 90 degrees to the operating rod but it is just a quess on my part. I suspect that the ECM will not allow the turbo to run unless the car is in motion.
Bert
a tight .012 in as against the .010 in recommended. On the subsequent test drive the tappets got noisier as the engine warmed up! So knowing exactly what tools I needed and having had a practice at adjusting the tappets from cold I went home and did the whole thing again with a hot engine setting the tappets to .010 and managed the whole operation quickly as I knew exactly what to do. This time the engine got quieter as it warmed up and when hot was much smoother and quieter than before. My "trouble and strife" agreed with me so it was not wishful thinking on my part! So do it hot!
A query: is it possible to check that the turbo wastegate valve is working properly with the car at rest and the engine running at over 3200 rpm? The threaded rod connected to the flap valve in the exhaust sytem never seems to move and I am wondering whether it is adjusted correctly. I think that the operating lever(the bell crank in engineering speak) controlling the exhaust valve should be at 90 degrees to the operating rod but it is just a quess on my part. I suspect that the ECM will not allow the turbo to run unless the car is in motion.
Bert
