rough idle.

[lord_davros]

hi everyone.
i have just bought my first vn. the second commosore i have owned. the first one being a vk calais.
anyway i have been reading the posts and i have noticed people say that the series one vn (lexen) engines idle rough but have better acceleration. is there any truth to this because my cars motor idles rough doesnt missfire but when i give it gas it is smooth and gets up and goes.
any feedback on this would be great.
i have a 1990 vn(lexen) 3.8ltr auto
thanks

dave

[VIP-VPT..Banned......]

dont know man sorry, i drive a VP V6, but ive had heaps of runs with VN series ones.... i beat em off the line and they cant catch me, im jus runnin a pod, now i have a minispool in my 3.08's, but this was long after that

[CLE]

I know what you mean about the rough idle. I haven't been able to fix mine yet....it's so annoying!!!

[mongoose3800]

Perfectly normal. Sure they idle is a little rough but once they are moving I think they're pretty smooth. Also, I'd rather feel the car idling and know the car is idling. In some new cars it's very hard to tell.

[greenfoam]

yep they do idle rough and it's normal, it was known as a rough engine even back when they were new, the series one has a fairly lumpy camshaft and the inlet manifold isn't good for idling. You can fix it somewhat, changing the timing and the idle fuel mixture but that's too much trouble for most people. Bet she feels pretty fast compared to the old VK

[Garth]

the old rough idle, that comes factory fitted from holden, you can fix it as mentioned, but why bother, it gives the vn it's charachter, you fix the idle, you loose power

cheers
garth

[mazza]

I found it idles heaps smoother when i put BP Ultimate in instead of regular fuel. I couldnt beleive the difference. Fuel economy is also better but not by a huge amount