Hello folks, happy new year!
nice forum, first of all, i must apologize for my bad english, i am slovenian and it's hard to me to write and much easyer to read, so i'll try the best i can.
Thanks
So, i got myself a 1996 Disco 3.9 EFI hotwire, auto and LPG. It's a nice Landy and I love it, but..........6.5mpg??
it seems also not all cylinders working sometimes, when cold starts ok, when hot and after a half stopped i have to crank it for 15 seconds to start.
Sometimes i smell petrol but can't locate from where then. The idle is not smooth and the engine will shake/vibrate when stepping the throttle.
The sound isn't also smooth when driving, sounds like an Audi with 5 cylinders and feeling some vibrations from the engine.
Checked the coolant sensor, resistance is falling when warming up, ok, changed MAF, ECU, dizzy cap, rotor arm, cables, ignition module and coil ...all from another, wich was working fine.
Changed the sparkplugs also with new ones (NGK BPR6ES), set ignition on 6° without vacuum hose.....
no vacuum leaks present, stepper works fine (cleaned), TPS setting is ok too....
the behevor on petrol or lpg is the same, no leaks anywhere
cats are removed, lambdas still on, but not checked yet
also i'll try to check all again on the ecu connector, maybe the gremlin is somewhere in the wires
i think the compression is ok, no oil consumtion, no blue smoke, however, the exoust gas smells more like there still cats are present or maybe can smell petrol....or like sweet smell, it's hard to describe
mpg on lpg is very low too
the sparkplugs looked like this: (it's in the same order like in the engine)
need help, tips, advices, ......please
after lots of googling and using search functions on forums leads me only to confusions, on the other hand, i leraned a lot
yesterday i read something about cleaning them and adjusting, adjusted it, set it on 1.8V on the first wire from the right on the connector (it was set to 3V and something) while engine was ideling
did i do correct?
also did disconected the ecu connector i noticed some bad contacts
on the other side, there are two smoked wires (ground)
fixed the contacts and measured the wires, it's still ok
checked the signal from coolant temp sensor, ok fuel temp sensor, ok, then we go to lambdas.
Using two multimeters, black cables to ground, red cables to pin 23 and 24.Starting the engine and left bank pending between 0 and 0,85V, rihgt bank between 1,096 and 1,227V....first i think something wrong with the multimeters, so i swiched them and the same come up for the banks....the rihgtone is faulty somehow.
Ok, so what does this mean?
Is it running to rich on the right bank?
Or is this a faulty O2 sensor?
here is a short video i made, it's shows the behavor of the multimeters during the lambda test:
another thing is, the disco had cats, but not any more, only lambdas left, so i changed the tune resistor from 3900 ohm to 470 ohm...did i do that correct or should i put the white resistor back?
i think, im a little bit closer, but still far from solving my problem,
all best from the sunny side of the alps
ps: in other posts i read something obout "tick over", what does this meen?
thanks!