Vr to Vn conversion HELP

[sgleeson]

Hi ive just recently taken the Vr motor out of my ute and replaced it with a Vn ecotec motor. now im having trouble getting it to start and when it does start it idles nicely but when i go to increase the revs it stalls as if its sucking air/fuel??? Please Help!

[GetToDaChopa]

VN Ecotech ?? So just to confirm what motor do you have in there, just to make it clearer. I've got a feeling it's getting fuel but not enough air.

[sgleeson]

yeah its a VN Ecotech out of an early model commodore.

[sgleeson]

so wat u think i should do?

[Andrew426]

Does the top of the plenum say "3800"?

[GetToDaChopa]

Maybe it's just very late and i'm tired but the ecotecs were only from VS onwards?

EDIT: I'll just refrase that. They WERE only from VS onwards. You might have (what some people call) a Buick engine in yours.

[sgleeson]

yeah it does

[sgleeson]

not too sure i havent had much to do with the commputerised shit! lol it says ecotes 3800 on the top anyways

[GetToDaChopa]

Could also be a loose vacuum hose or leak in the hose.

[Andrew426]

That means its a buick 3800, rather than an ecotec 3800. They have different heads and intake and a few other things. I would say fuel or possibly a weak spark. Are you using the VN trans and computer?

EDIT just read your last post.
Yeah it will be out of a VS rather than a VN.

[sgleeson]

yeah could be... im using the Vn transmission but the Vr computer! ive tries using the Vn computer and i dont get no reaction at all it just turns over.....

[sgleeson]

so wats u think i should try?

[GetToDaChopa]

Check your hoses. Check spark plugs (and leads and coils). Check the fuel lines. And then check it again just to make sure.

[sgleeson]

alrighty ill get onto that and c how it turns out! thanx for your help...