Engine problem

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Well-Known Forum User
Ok you budding mechanics out there
was in the Z (260) and it started to run as if one or more plugs had gone down,Smoke coming out of exhaust mainly at lower revs,
Thoughts were knackered engine but possible over fuelling which is wot it turned out to be
changed the plugs but still not running right so could be an injector ( still to be looked at ) but noticed oil in rad but no water in engine,yeah head gasket comes to mind,pistons are all ok as put camera thingy to have a look ,compression 175 all round ,can’t do a sniff test just yet with the oil in rad
so any suggestions rather than head gasket comments as already looking into that later
wen we took the plugs out no 1-6 were black and soaking wet,have put injector cleaner in also it’s running Jenvy and an Emerald which might possibly need updating ?
 
Are you running wasted spark ?
1-6 cyl will be on the same output if you have coil driver either in ecu or external maybe the cause?
 
Well oil in the rad is the thing that 'shouts' at me. Surely a head off job?
 
I expect it will be wasted spark, and also it'll be paired injection (1 and 6 being a pair). So I'd think either the wiring to the ECU from that pair has been caught somewhere and is grounded, or maybe that channel driver on the ECU has failed.
 
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Yeah cheers didn’t think of that one although I’ve got a healthy spark but oil in the rad,not engine that’s another thing to look at
poss mice been visiting as well
 
So far this morning went to start car no fuel pump,turns out it’s a relay which is ordered,ECU seems ok but I might look into updating it
sniff test later on Monday now the rad is clean
 
Sniff test sed head gasket,Dave from Rebello said they don’t blow so it’s probably an oil way,Got car going now and at home,drove really nice and smooth
going to do a couple of ten mile ish journeys to see if the rad gets oiled up again
 
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