Valve Clearance (Turning Engine)
Posted 07 June 2009 - 15:18
As a last thing I get the impression its better to do the adjustments without a feeler gauge, can anyone explain how to do that ?
Sorry for all the questions, never really played with engines much.
Posted 07 June 2009 - 17:01
Posted 07 June 2009 - 17:06
correct, with the car in 3rd gear just be sure the ignition is off during this point lol
If you can jack up one front wheel you can turn that to turn the engine.
Posted 10 June 2009 - 09:33
Posted 10 June 2009 - 11:23
Posted 10 June 2009 - 11:58
Another way to turn over the engine is to take out the spark plugs, thus eliminating compression, and turn the engine with a spanner or socket on the crankshaft pulley centre bolt. Make sure the handbrake's well on first if you'e on a hill!Definately use a feeler gauge, otherwise you're only guessing at the clearances and check them at the specified engine temperature (hot or cold). Valve clearances change as the engine warms up.Hope this helps.
This sounds like the method a friend described to me and was how I was intending to tturn the engine. At the risk of sounding very stupid, I'm not exactly sure what I'm looking for but couldn't find a large bolt to twist that didn't look like I was going to make something fall off. At the risk of sounding cheeky, any change of a picture ?
Thanks Ken, I was thinking that if I fully tightened the screws I could get a zero clearance then work outwards using something like that as that would then account for worn tappets wouldn't it ?
Can a valve be partially open or is it all or nothing ? Just to confirm when the valve is open the spring is compressed ?
Thank you all for taking the time to reply. Much appriciated.
Posted 10 June 2009 - 12:10
On the feelerless tappet adjustment method, this only works if you know the pitch of the tappet adjustment screws (a number like "M8 x 1.2"). A set of feeler gauges is only a couple of quid and will last forever.
And yes a valve can be partially open; turn the engine over by hand and watch them.
Posted 11 June 2009 - 13:11
Posted 15 June 2009 - 20:08
Your advice is much appriciated