Outer Limits 4x4 Board

My 85 sierra, with the 8valve SOHC carbie 1.6 vitara motor in it, wont idle. It starts up, rev’s to about 4 grand for 3 seconds or so, and cuts out! It blows white smoke, the 4th cylinder is down on pressure but only a bit, the carbie has been cleaned but could still be the problem….. The oil is a bit milky, and the air filter was filthy…… muddy water signs….. its been sunk! Spark plugs have been changed, compression test done, carbie cleaned a few times, but still won’t idle…..

Can anyone help me!

the smoke is smoke, not steam........ and we have drained the fuel tank and put new fuel in too!

fuel filters??
i think there is a little strainer inline with the fuel line up inside the carb

yeah where the fuel line comes onto the carby there is a banjo bolt take this off carefully as it should have two copper washers one on either side and in the bolt is a little strainer filter pick it out and throw it away.
they are only going to be a hassle for you if you keep it.

also is your fuel pump working???
ELECTRIC OR MECHANICAL?

yeah the fuel pump is working, we tested it out...... its got me stuck what the problem is, i will try what you guys said tonight, i wanna get the motor running so i can start doing the fun stuff! MODS!

Have you just installed this motor?
If yes there is a idle solinoide on the carb that needs power to let it idle.
Nik