Running/ Compression Test? NOT Running/ HELP?
Thanks in advance for any and all help... ( I have read countless threads trying to find my solution )
1997 Discovery SE7 4.0 GEMS W/AES
180,00+ miles, impeccably maintained, AMSOIL since 15,000 comes out still amber after 7,000 miles.....
Was running well, purring like a kitten. However it was getting progressively weaker. I run over-sized tires so gutlessness has been with me for years and years....Anyway, I decided to do a compression test to see if I had a problem. Test was okay (a bit low but generally even) all cylinders were around 110 psi. A wet test showed minimal gains of about 5lbs. but still even.
Recently replaced injectors and put 100s of miles on her after that. New MAF recently. new plugs and wires, fuel pressure @ 38lbs.and stays for hours. Spark is present (each wire checked with timing light).
NO CHECK ENGINE LIGHT!!!
Back in the day with all of these parameters I would chase ignition timing, but that is CPU controlled on this truck.
So, I have spark, fuel, compression, timing and it drove and ran beautifully to where she lies.....took out the plugs and now.... NUTTIN'
I have tried everything I can think of.....
PLEASE, someone come and tell me how dumb I am and that I should plug in some wire or something.....SOMETHING....
Note: repeat from other forum