Howdy! First time posting...
I have a 78 BJ40 that I’ve been rebuilding, and when firing it up for the first time, exhaust smoke was excessive, sometimes grey, sometimes darker and would calm to almost normal when bringing RPMs up. Attached are a few photos illustrating the changes as I start it (smoke!), start to drive w low RPMs (smoke still), drive (limit smoke), engage clutch (smoke returns) and then put in neutral before reversing back into driveway (darker smoke)
I am about to use a block test to confirm the the fluid isn’t coolant. Head was rebuilt by AMS, head gasket replaced and everything torqued to spec after cleaning up the block some too.
The smoke has no sweet smell at all and the oil dipstick also lacks a sweet smell.
Hoping it’s just a fuel pump adjustment but any input is helpful, I’ll answer any other questions as best I can and will post any photos requested (of the vehicle )
Thanks in advance!
I have a 78 BJ40 that I’ve been rebuilding, and when firing it up for the first time, exhaust smoke was excessive, sometimes grey, sometimes darker and would calm to almost normal when bringing RPMs up. Attached are a few photos illustrating the changes as I start it (smoke!), start to drive w low RPMs (smoke still), drive (limit smoke), engage clutch (smoke returns) and then put in neutral before reversing back into driveway (darker smoke)
I am about to use a block test to confirm the the fluid isn’t coolant. Head was rebuilt by AMS, head gasket replaced and everything torqued to spec after cleaning up the block some too.
The smoke has no sweet smell at all and the oil dipstick also lacks a sweet smell.
Hoping it’s just a fuel pump adjustment but any input is helpful, I’ll answer any other questions as best I can and will post any photos requested (of the vehicle )
Thanks in advance!