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[Chazza12]

Thanks will ask him to have a look. had to change the adjuster screw as it had broken off on the adjuster part. but when he had it out it was idling at 430 but did not sound right to him so put it up.  he coming round later as just been on the phone with him. Thanks Doctor Gollum 

[Marks DTM Calib]

You do NOT use the adjuster screw on the throttle to set idle.

It should be adjusted so the throttle butterfly closes, but does not stick, no more 

[Chazza12]

He put it back so its just touching the throttle, holding at 800-860. with without all electrics on. does dorp to 780 but backup to 800. is that better ?

[Doctor Gollum]

Certainly sounds more like it

Are specs not in Haynes BTW?

[Chazza12]

I've not looked but he said he could not find idle information, he took book so will see tomorrow.  at least i can read lol not much ells.

[Chazza12]

found this online
Year: 1995-1998: Engine code: X20XEV: Engine size: 1998ccm: Power:100kw: Compression: 12.0-15.0bar: Minimum compression: 9.0bar: Fuel system

Year: 1998-2000: Engine code: X20XEV: Engine size: 1998ccm: Power:100kw: Idle speed: 730-960rpm: Compression: 12.0-15 .0bar: Fuel system.

so must be in the right ballpark now. 

[Marks DTM Calib]

The only way you can change the idle speed is via the settings in the ECU 

[Chazza12]

just done another check on the compression after been using engine restorer, and think its worked quite well.
piston 1  = 230 psi
piston 2 = 243 psi
piston 3 = 245 psi
piston 4 = 248 psi

so think its done some good compression is up. only used the 1 liter can and done over 1000 miles, ( don't drive much)  only problem have is hit a speed bump on the exhaust and think its done something to the manifold. was only doing 3 mph but the landing was not good it was way to high for a speed bump. been making some strange sounds after so will have to have that off to have a look. ( hit the joint where the 2 downpipes make into one).  glad it was not the sump.

[Raeturbo]

Engine restorer? What stuff did you use.? As per the information you posted re:
12 to 15 bar..  that’s 176 to 220psi looks like the restorer must have stuck to
The top of the pistons therefore reducing the size of the combustion chamber
Giving the high compression figures. But if it ain’t broke don’t fix it.
On another note hope you get better soon.

[Chazza12]

Thanks it's engine restore from USA that's it's name comes in a can just add to oil  not cheap but seams to do the job. It's like aluminium in a can. Think it cleans and recoats engine. These is no sticking to the pistons. Bit of carbon on piston tops but not thick. Going to do oil change soon do will put oil though a filter and see if anything comes up in the filter.