bid bad misfire

[stevenford_uk]

if you dont already know, i have a 1991 escort cabrio, 1.6 ghia injection, single point injection, cvh motor.

the motor when under load misfires like hell, it hesitates then jolts like fcuk!!! like someone is just cutting the ignition, then it will pick up and do it again, its very irratic!

i need this sorting, please help me

thanks

[98gt]

Check the usual suspects like the ignition leads, plugs, etc.

 

I had the same problem recently with my Zetec but it was my own fault. I power washed the engine cos it was filthy and water got into to the recesses for the spark plugs. Car ran fine for about 60 miles but then when I tried to accelerate hard it started misfiring like mad. It was bitch to get all the water out of the recesses, but at least I've learnt my lesson

[stevenford_uk]

just to let you all know, the things i have checked are:

plugs- perfect cond.

leads- fine, no probs

throttle position sensor- had some butchered wires but they are now insulated

speedo cable, electric sensor thing- was out and floating round but now all ok, speedo dont work tho.

exhaust gas recirculation crap- seems to be working properly, disconnected it all and made no difference.

electrical connections in engine bay- all ones i can find have been checked

 

there is no water in the plug recesses, head gasket looks ok, but aint sure, all vacuum pipes seem ok, water level is fine, cooling fan dont work, oil level is fine.

dunno what else i can check? please help guys i need it sorting before weekend!

thanks

[Longy]

Air Filter?

 

Fuel Filter need changing?

 

oil change?

 

timing?

 

due for a service? go for a tune up?

[stevenford_uk]

air filter is a k+n bolt on jobbie(very clean), fuel filter is being replaced today, needs an oil change and needs a service, dont know if timing is out but i doubt it coz it only misfires sometimes, worse when its under load.