Random Idle

[01sik]

hey guys i got a slight idle problem with my 4k, idles fine when cold but after i warm it a little bit, starts to idle like its missing? i got new plugs, leads, checked dizzy and timing but still does it could it be fuel delivery?

 

bought it off an old guy with 106xxx kms so still stock as a rock (well not now) and it did it when i bought it, also my choke cable is broken so might it have something to do with choke stuck on slightly?

 

thanks guys

james

[towe001]

Compression test, check the radiator for bubbles/ exhaust smell and have a look under the oil cap for any milk coloured oil to make sure its not a blown gasket.

 

I'd take it out onto the open road, after the compression test was good and give it a good flogging to burn the carbon out of the motor.

 

And if that doesn't work it could be a burnt valve.

A vacuum leak would have the idle just drifting up and down (the same can be said for fuel mixture) not sounding like a missed spark ignition.

[01sik]

cheers rob yeah just had a look under the oil cap no residue at all, played with timing a bit and is idleing normal now and yanked on the choke cable in the engine bay and released it a bit, it moved back probly 5mm and idle changed so maybe this was the culprit but i will be sure top give it a flogging shortly :) well as much as you can flog a 4k anyway lol......still feels down on power though?