jwfirebird - again thanks for your time.
unfortunately (lots of those
) I am past the point of being able to do all but easy to reach stuff.
A little history I bought in 2009 with 68,000 miles on it. Now 85,000 - not high use
The P305 had been up for several months showing little or no effect. A few weeks ago under load the SES would flash a couple of times and missing could be felt.
Coolant leak: Not a yes/no answer. No sign of mikly at any time, recovery bottle never empty, no overheat. I check it often - I have a dip stick for the recovery bottle.
A couple of years ago there was an external leak that appeared to be coming from the area around the top left of the front cover. I put some stuff in the radiator which stopped that. The car only logs about 200 miles a month, all city driving and uses 1-2 cups of coolant a month. There has been seepage at a couple of hoses which I think I have recently stopped. The last week or so I have been pushing the engine a lot harder than normal to try to get a handle on the problem and the coolant level hasn't gone down.
Compression: I took it into a shop (a difficult thing for me to do) they replaced the 2-5 coil pack (weak spark?) and #5 spark plug - no help. I asked if compression checked and was told stuck finger/thumb in the hole while cranking.
They recommend taking the top off to check the #5 injector and while at it say might as well do the intake manifold gaskets.
I'm thinking to ask them to check #5 compression, if is about 150 ok, but if say 120 to pull all plugs for a better check. I read it is not a good idea to pull plugs until engine has completely cooled down - do you agree?
The thing I can't get my head around is that at start up it runs smooth for the first minute of so and on the road with pedal to the metal. I'm guessing their is a default fuel setting used at start up and at wide open throttle we don't care about emissions or fuel economy.
Aside - A few months ago I replaced the alternator because the voltage was varying quite a bit, 15.5 or more with high ripple - shorted diode(*). I wondered if that could have messed with the electronics.