jaminescort1985

hey guys & girls, heres the story so far any help or advice would be really really helpful. i've put an rs1800 engine in my mark 6 escort and i'm having problems with it driving. it idles ok but when i drive it it has a massive flat spot from about 2k revs upwards. the only thing that i can think that it might be is that i'm using an air mass metre from a mark 6 escort gti, not from an rs1800 as they cost about £300 new and so far i'm having trouble finding a secondhand unit. if anybody has any idea why this is so and what i can do about it, you really help as at the moment i'm without a car.
thanks peeps
jamin

RichieST

iTrader: (2)

unplug the air flow meter then start it and take it for a drive. This will put the ecu into limp mode, and although power across the rev range will be slightly hampered, the massive flat spot should disappear if it is a sensor/afm fault

Sunil_FiestaRS1800

iTrader: (1)

Shove a 2.0 mondeo one on , its a bigger bore than an rs1800 one and theres loads in any scrap yard.

Also what ECU are you running?

jaminescort1985

i'm running and 1.8 escort ecu at the mo. a mechanic friend of mine has just looked at it in the past 30mins and has told me thast it's not firing on cylinder 4. he's gone of somewhere to get a compression tester and will be back. bugger!

lukemakepeace

did you forget the spark plug?

jaminescort1985

no it's new plugs and leads on it lol

Sunil_FiestaRS1800

iTrader: (1)

If it wasnt running on all four cylinders you would have more than a flat spot it would be running like a bag of nails through out the rev range

Are you running a 130ps spec ecu? as you need to be really