has anyone had the same prob my rs fires on 3 cylinders on start up some times iv put a new set of ht leads plugs next anyone have ideas

 

Dribbling injectors/cold start valve or head gasket.


Does it use water? Where there signs of anti freeze on plugs when you removed them? (greeny blue colour)

 

iv just put a new engine in after the car was sat around for a year or so my engine was fooked so i bought one of norbert of pf it has a kent cam and over sized low comp pistons it has used some water but it has a lil leak on the inlet manifold were the water sencor goes i think ?? it dripps now and the since all put back together iv had to fill the tank up one but that could be still filling the engine and rad up.no signs of water the plugs are oily colour.

its like some times i start it all 4 are working. sometimes only 3 but after its warmed up it doesnt seem to do it.it doesnt smoke bad like head gasket it doesnt smoke at all hmmm im stumed

 

mine was like that.sounded like running on 3 but once warmed up it was fine.
had a mobile tune up guy look at it who really knew his stuff.
he compression tested it and stuff and turned out to be a sticky valve making it run shit.
i put some wynns valve treatment in it ,gave it a good run,problem solved

 

sounds like it just needs a good tune or cold start valve mate

 

unplug the cold start and then see how it runs.. also check the wires going to the injectors

 

goin to put some new plugs in tomorow and unplug the cold start valve wat colour is that one ?

 

Follow the pipe that comes out of the centre of the metering unit, to the valve under the intake manifold. Might be blue, been 10yrs since I had an RST!