Vac leak
I had the same problem when the blower blew a vac line off of the rear of the upper intake. Ck all of the vac lines and hoses from the MAF to the intake. It is pouring smoke because the HEGO's are reading unmetered air due to the leak. But also try bypassing the FMU. It could also be bad but you should see high fuel press. ANd the MAF has to be correct for the application-blow through or drawn through. What kind of MAF is it?? ANd is it new?
|