misfire

hello all, the Venturi has an uneven running problem,
but it only happens at idle and when holding at a steady speed.
Under acceleration not a problem
any ideas please

Start with plugs and dizzy .Will show up more when you are not giving it beans although it will still be there

new leads/plugs/dissi cap and rotor arm.
could it be one of the vacuum pipes ?

Was it dong it before you replaced said bits ? Vac leak would show a constant rev issue .If it's missing then down to injectors or plugs masked by bigger right foot .

replaced all as said but yes no change

Injector down or playing up ? Pull a plug from each and see if any change when running rough .

will give that a try. if so does anyone have an injector /
I SOLD my spare engine

.
Has this got Lambda sensor feedback?

does not have a lambda
,bloody hell it was built in 1988,did they have them then?

Sounds like ECU engine temp sensor to me....

This problem happens as soon as the engine has started
and then left to idle.
No problem in starting whatsoever.
do you think it is still the ecu eng. temp sensor ?

IACV (idle air control valve)
Plug gaps?

I will have a look at the IACV, but even holding at a steady 70mph
the same problem can be noticed
confused.com

It's ignition or injector innit .......or tdc but I'd expect that to either work or not .Gaps ,could be .
Just because you have changed the bits doesn't mean they are all OK .Check you haven't disturbed something ...injector plug ...spark leads all secure and tight to plugs .