Quote:
Originally Posted by Paul T
Will do.
This cracked or rotted hose....Is there a chance that it is accessable exterior to the fuel tank?
Hope so. I am not equipped to drop one (fuel tank).
There is a vacuum diagram for an "older" Blazer with pictures in the Technical Section of the Blazer Forums.
Should I start looking here or do you think that by the nature of the code that if it is indeed a bad line that the probability is that it resides in the fuel tank?
Thnks-In-Advance,
Paul
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As Old Master said, these are a bear to diagnose. The lines directly related to this issue will run the full length of the truck, from the engine to the tank. This small leak can be anything from the filler neck clamps, to vent hose, to the rubber filler neck that goes from the gas cap to the tank, to any of the other lines and hoses going into and out of the tank. Not to mention the fuel pump gaskets and tank vents.
The good thing is we have already eliminated the Gas cap, and it isn't snowing, which makes for a much nicer trip underneath.
Usually, nothing INSIDE THE TANK will throw this code.
The best thing is to tighten as many of the clamps and fittings that you can, and inspect for any obvious signs such as fuel leaking after fill up etc. Remember, this hole can be only .030 in diameter.
The Vacuum diagram might help, any vacuum leak needs to be fixed.