Vx ls1 Black smoke

[Ashy2]

Hey guys,

My brother in law recently Acquired a vx Calais with a Ls1 including;

Vcm 710 cam
Fuel cell with 60L raceworks tank and Bosch o44 pump
Gfb fuel reg
2800 high stall converter

When he’s taken it for a ‘drive’ it’s started Playing up, and throwing black smoke out the rear, we’ve been told it could be abad injector or something similar but not too sure.
Any help would be appreciated!
Thankyou in advance!

 

[ant797]

black smoke is running rich ,,,could be 02 sensors.. maf ..fuel regulator ..injectors as you say ..i would start by checking your fuel pressure making sure the regulator is working properly cleaning maf checking for codes etc ..i had 300zx did that checked all those things had no luck myself that was years ago and im still broke

 

[ant797]

also bit of an obscure one is thats mention to check is the purge valve solenoid