opel kadett c with 20v 4age

[rob@vems.co.uk]

Nicely done on solving the problems.  If its rich then start to mess with the fuel map - save your configs before you start so you can revert to the original setup.

Let your nose guide you to start with, then when the mixture is getting leaner and the idle smoother use the wideband to get the fuel spot-on.

[jap_kadett]

can you see any problems with where ive fitted the wideband, about 100mm from head on cly 1?

[rob@vems.co.uk]

It really needs to be after all the cylinders have merged.  That bung might be good for an EGT sensor.

[jap_kadett]

will fit new bung into exhaust, did notice but dont know if its a problem relating to the wrong set up i was running at weekend, but cly 3 and 4 exhaust pipes have been a lot hotter than the other two?

[rob@vems.co.uk]

What do the plugs tell you about the mixture on those two cylinders?
We know that the timing will be okay as its a wasted spark coil pack.

[irishtwincam]

On a 4age #4 runs the hottest.
Might be worth noting what goes on there, or if you want an average for all 4, 3 or 2.
1 should run best for tuning.


WBO2 needs to bee inthe merged section

[jap_kadett]

got bung this morning will weld it on latter after exhaust cools down,

had a look at plugs after very short run, running rich and slightly wet, i started playing around with ve map, started quite low untill it would not start so looks like a play around with these, still learning very slowly,

but managed to get new lap top to communicate with vems which has vista on, nearly bought another  laptop on xp last week,

[jap_kadett]

i ve got a mot booked tomorrow, and have only driven the car 100yards and back,

basically have some noob questions,

should map gauge increase with throttle gauge with engine not running

how do you calibrate an unknown map sensor if all.

car running lambda .84 still to rich,

how come spark angle so far advanced when manufacture recommends 10 btdc, running around 31 deg btdc

how do you calibrate battery?

sorry for the dump stuff,  any help might be useful before mot tomorrow,

i have a coupe of datalogs if these can help in any why,

[gunni]

How much is the MAP gauge changing?

A unknown map sensor would be ideally checked with a vacuum pump (brake fluid changing for instance)
so you have two voltage outputs at known pressures, this will allow you to figure out the highest value at about 4,5volts
then you put that into your config and adjust for 100kpa.

Have you double checked that your timing values are correct with a timing light?

You measure the battery voltage with a multimeter and adjust the Battery Calibration value until your vbatt is the same as your multimeter

[jap_kadett]

going up to 255kpa with engine stopped at 100% throttle?

battery makes sense now, thanks

ive set trigger wheel to

67 deg after tdc,
35 teeth
1 trigger tooth
18 next event

sensor at bottom of crank wheel,
missing tooth 67deg after sensor.

might be easier to buy known value map

[gunni]

Sounds like you have it set up for Alpha-N

[jap_kadett]

went for mot today, failed badly on emissions 12% co and around 2000 hydrocarbons,

car would not pull, would pick up ok on slight downhill, would not pull going back up,

had to ride the clutch to get it to move, rechecked timing all looked ok, 

alpha-n was enabled but did seem to make any difference,

 

[gunni]

If your car isn´t driving near perfect you´ll pretty much always fail MOT

[rob@vems.co.uk]

This does sound like the car needs a good amount of tuning.
What Lambda are you seeing at idle?
I have seen cars on lambda 1.0 with stupidly high CO and HC, suddenly come into spec when the injector sequence is changed, so its worth looking to see if you can ensure that the injector is firing onto a closed valve.
20V engines have a VVT dont they?  Are you sure that the solenoid is not active and hasn't moved the cam position?

[jap_kadett]

car was idling at 1.00 for about 30secs than dropped down to .84, thats what he tested it at,

how do you test injector timing?

yes its got a vvt valve, will test that also.

car starts and idles well, but underivable, and with no mot or tax no road test possible for the time being,