1.4 running problems

[diablo007]

the engine is a 1.4 sri but im runnin it on a carb, a cam box and cam out of a 1.4. the cars running very lumpy altho it starts in the button. any ideas what it could be?

[Mikey_J]

Is it just when cold? The carb could need a clean...If you can id take it off of the car, strip it and give it a thorough clean..failing that try putting some redex through it. At least then you'll know that thats not where the fault lies if it does'nt fix it:)

[Jon_nova1]

did it start as a 1.4? did you have the carb distributor of it for the vacuum advance?

[tom reid]

Timing, fuel mixture need adjusting?
Could be the cam doesn't like running on a carb, had this problem myself in the past, fixed it with T40s

[Jon_nova1]

i've got the same, it was a 1.2 converted to a 1.4 injection running on carbs, i got the car and had to change the ignition module to the 1.4 one and also change the distributor as it wouldn't have electronic advance on it

[diablo007]

the bottom end is outta a 1.4 sri(1994 it think) i had to change the cam box an cam to fit the dizzy? how do i go about adjusting the fuel mixture?

[tom reid]

Depends on the carb.

[big gra]

you will need to change the coil and distributer to that off a 1.2

[Adam]

What head is fitted?
The sri one?

If so that will be causing a turbulent inlet flow, probably explaining the dodgy running.

[SRI crazy]

the sri head had the biggest inlet ports so mayb your getting to much of the good stuff in try adjusting the idle and get the timing set and mayb advance it a little

[Jon_nova1]

the 1.2/1.3 had the biggest inlet ports

[diablo007]

yup the sri one

[Sloth]

if your running the 2e3 pierburg carb, the answer is easy, bin it! theyre w##k, and expensive to rebuild, get a downdraft weber, twin webers or tb's. simple really!

[mikey14sr]

The mis-match of the inlet port shapes will be causing a lot of the problem. The fueling and timing most likely need adjusting too.