94 PSD fuel economy drop
OK 94 PSD OBS Automatic 1T dually.
Fuel economy just dropped from about 17mpg hand calc to 13.14.
Supposed to leave for a vacation today! 2600 miles round trip so a few mpg is a big deal at $4/per gallon.
Idle does not seem too rough like I have a clogged injector but last time I didn't notice until two were clogged. Also power does seem a little down and not using an oil.
My question is: Is there a tester avail or a home method to do the injector test without having to pay the $85 the local guy charges just to scan. I don't mind spending a few $$$ on a tester but not the $1500 for the snap on setup.