running rough

[joshg]

Morning all,
My 01 d4d colorado runs like a dream but seems to be quite lumpy at idle. The engine sounds ok but the vehicle itself jumps about a bit, I dont remember my 96 colorado being like this although it was a few years ago and obviously a different engine. Is this normal? Or could there be something causing this?

Josh

 

[Charlie]

Morning all,
My 01 d4d colorado runs like a dream but seems to be quite lumpy at idle. The engine sounds ok but the vehicle itself jumps about a bit, I dont remember my 96 colorado being like this although it was a few years ago and obviously a different engine. Is this normal? Or could there be something causing this?

Josh

What is the low idle speed of the engine?

 

[joshg]

off the top of my head about 800

 

[Charlie]

Well thats not the problem then.............

 

[Crushers]

is there excessive black smoke at idle?

 

[joshg]

is there excessive black smoke at idle?

No smoke it all on idle

Josh

 

[wobbly]

Does that engine have a timing belt or chain?

If it has a belt, it might be out a tooth or possibly the tensioner isnt moving smoothly?

Does it start easily, or need a couple of tries - thinking along the lines of a small air leak in the fuel line?

Pete

 

[joshg]

Hi Pete,

It starts fine and runs fine, just feels a bit lumpy when idling could just be me of course. Maybe if someone on here has the same model and is local, I may be able to see if theirs is the same?
Josh