George Blake
DONATING MEMBER
Re: 7.3 mpg
Was your truck running at 850 rpm warm at idle before the chip and injectors?
If so, that's not good. That indicates a vac leak. Mine goes at about 550 rpm and has 150K + miles on it. The chip was burned as a bandaid to help you get the truck running. If you need that much fuel to keep it running, you need to fix what's wrong. The tire tube trick is quick and easy. After that do the injector leak down test:
http://www.sjdiscounttools.com/otc3398.html
I've seen these on Ebay for $80 but shipping was high. This along with a fuel pressure will rule out injectors, pump, or regulator.Go to this gallery and print out all the pics of the procedure:
Fuel system diagnostics
And these are the injector leak down test
Between these two is everything for the fuel system. If you do the leakdown test, you can see which injector or injectors is causing the leakdown.
Was your truck running at 850 rpm warm at idle before the chip and injectors?
If so, that's not good. That indicates a vac leak. Mine goes at about 550 rpm and has 150K + miles on it. The chip was burned as a bandaid to help you get the truck running. If you need that much fuel to keep it running, you need to fix what's wrong. The tire tube trick is quick and easy. After that do the injector leak down test:
http://www.sjdiscounttools.com/otc3398.html
I've seen these on Ebay for $80 but shipping was high. This along with a fuel pressure will rule out injectors, pump, or regulator.Go to this gallery and print out all the pics of the procedure:
Fuel system diagnostics
And these are the injector leak down test
Between these two is everything for the fuel system. If you do the leakdown test, you can see which injector or injectors is causing the leakdown.
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