Wish I knew. I tried replacing my valve oil seals, didn't help. Sometimes related to intake manifold gaskets, so you can try putting Ultra Black RTV along the intake manifold by the distributor....
I ended up just getting a new engine because it was blowing blue smoke as well.
we need more info on this application like what year and what is a b250 i would suppose it was a dodge
A Dodge B250 Van does not have a mass airflow sensor.
The coil is bad.
No.
I have a 1989 Dodge B250...it has overdrive
No.
Center of the firewall.
Yes
Shorties are 109", standard is 127"
Dodge does not use inertia/cutoff switches.
Bottom of the oil pan.
Unbolt it. Careful, it's heavy.