Recent: Fix food processor motor?

Mend Vans

Mend Vehicles, Vans
Find out how to mend it for free.

Ask Question
Mend Vehicles, Vans
Click here to mend vans

Mend > Vans

Mend Smoke Mileage Engine

1990 B250 black smoke bad gas mileage?

engine light flash code 51 a lean air/fuel mixture has been indicated by an abnormally rich correction. this a 1990 B250 van with 5.2 tbi I have replaced injecters,timing is right went from 17/18 to 8/9 mpg.

Malcolm Squires
July 2006
Also could be a vacum leak in system

bg
July 2006
Check the fuel pressure regulator @ the injector rail

bg
July 2006

Automatic Answer

We may have found other answers which could help you.

Click here for Smoke Mileage Engine

Mend Vehicles, Vans
Click here to mend vans

How to mend ...

Find out how to mend just about anything howtomendit.com for free repair help, information and advice.
Mend Vehicles, Vans
Click here to mend vans