my cav turbo has recently been serviced and new ss zorst fitted at the same time but since that it runs rough for a few mins till the engine gets warm...
if you rev it over 3000rpm its o.k but below that it just shakes .
i've replaced the plugs but still no joy!!
what next, ht leads?
a mates calibra turbo did this recently. used to fluctuate the revs between 1000 and 2000rpm without the ecu light coming on. we swapped loads of bits around. in the end the light came on and the codes came up as lambda sensor and ecu coolant sensor. swapped both and never had a problem with it since. it now has a water leak though, lol