cammyR10

just wiring my erst engine into my mk2 fiesta the fuel is getting to the metering unit but only going to the cold start valve ive tried running the pump holding down the flap and cracking one of the pipes off but get nothing when you turn it over it almost starts but then backfires and stops ( might just be ignition timing) but its just the cold start valve whi8ch is giving it the petrol. its got a spark. could this to be due to the sensors on the inlet and below there are 5 of them but i only know 2 for sure
green- to knock sensor
brown- to brown sensor in middle of inlet below cold start
blue-?
black?
yellow-?
the 3 sensors are the
the cold start valve
the one right under the manifold
and the one next to the inlet on the water pipes
any hinput would be great cant wait to get it running thanks

RST Ski

blue is cold start i think, yellow on mine isnt used and the black one goes to the the unit that has coolant pipes going in and out of it thats bolted to the under side of the manifold

im sure some1 will correct me if im wrong

turbo.jon

sounds like you have an air leak some where had same thing on mine after engine rebuild turned out to be a dodgy dump valve leaking air check all boost pipes and if got dump valve try running with out it.



jon

cammyR10

got the fuel firing from the injectors it almost starts but then backfires and smoke comes out of the inlet side even if i play with the ignition timing hoping its not mechanical

RST Ski

sounds like the belt timing, did you time the belt up yourself?

gup

iTrader: (1)

alright fella
the blue plug is the cold start valve
the brown one is the thermo time switch in the middle of the inlet
the black one is the auxilery valve which should have a hard black plastic pipe going to each end
the yellow one is the water temp senser which is underneath the inlet at a funny angle
also as above is the belt timing spot on
get somone to turn it over while you twist the distributer also disconnect the cold start valve as you could be over fueling it thats why it could be back firing
remember it will run lumpy at first as you could have flooded the engine

cammyR10

yeahy done the belt myself but done it lots of times on my xr2s with no bother checked the marks and they seem fine but might redo it tomorrow to be sure im thinking that maby the leads are wrong on the cap anyone gor a diagram to check from going to go search for my manual