Hi Brits.

I own a ford escort mk4 cl, modded to a 1990 spec Xr3i Efi engine.

It have some strange issues tho, i have no clue how to fix it.

Lets start at the beginning:
When the car have been turned off for a couple of hours (typical 5+) it starts "okay" runs okay for a couple of yards and then it starts to "jump"/driving rough. It starts jumping around like im zapping the gaspedal on/off, but ONLY when I drive it nice, if i just floor it (even at 1500rpm) it stops jumping. untill i stop flooring it, then it starts again. After I pass 1km it stops acting weird but.. Now its still jumpy when i drive economical or hold a certain speed (like 60mph) ,, Only way i can get around in the city when im going back from work is to drive between idle and full throttle + raping my already worn clutch if i wanna avoid the damn jumping!!

When i floor it, its like its laggy? It waits for ˝-1 second before taking the throttle and then gives a huge jump feeling like the engine is gonna fall though the bottom, this is only when i kick it! if i take 2 second and increase the throttle smoothly theres no jump

Bonus info:

No problems in idle. (sometimes it goes swinging 100 +/-)
Engine = Cvh 1.6 8v efi. WITH lamdba/hego sensor

Obs: Also when its cold, it runs for like 1-2 seconds on the starter, sometimes when it hot i starts on the button? :S

So what is it? Something with the ecu? vacuum? Worn fuel pump?

Im sorry for my bad English.

Hope you can understand my text.

 

...doubble post

 

have ya checked the fuel filter

 

To be honest i havent :<

 

i had an incredibly similar problem with my 1.8 sierra...
unfortunatly the stem seals went as well and wehter it was linked or not the engine soon died a sudden death after starving itself of oil,
so i hope u get it sorted fella, good luck

 

Danzul - Wow i hope this aint my prob, but i know one of my valve guides is broken and the stemseal cant sit 100% on it, so now sometimes it puff bluesmoke when i start, but still only use 1 liter pr 8000 km O_o

Thanks for your input

 

put it this way if ya engine starts to feel like its getting quicker stop driving it and check it, i know its not something ya wanna here but my engine is fuck uses a litre of water and quarter litre of oil head gaskets gone valve sills are none existent but it gets ragged every day? so a little bit of oil should be fine, start by checking fuel filter, even check the inlet aint leaking

 

mine seemed odd it happened so quickly, where as yoursrs isnt, and pissed oil out as quick as i put it in but i had to get it home...., good look fella hope u get it sorted

 

Thanks for the help so far, havent found a solution yet tho :<

Im gonna install a new fuelfilter by wensday