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Q: where is the evr for the emission control on b2500 1999 mazda on 1999 Mazda B2500

need to remove and see plunger is stuck. failed emission test
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The EGR valve is located at the right rear corner of the intake manifold, near the firewall. before unbolting the EGR valve, disconnect the vacuum line. but maybe the valve have too much carbon just clean with carburetor cleaner
Thanks for the information . found the valve. no problem with nuts and vacum line however the pipe going into
the valve is rusty and has a large nut . sprayed dw40 but donot have a wrench lare enoughn to get pipe off.
only thingma I have is a pipe wrench and can not get on the nut. Do you know what size wrench I would need to get the pipe off? Could go and buy one. the code on my fail test was P1409 and indicsted KOER result failed
and MIL command status failed. Any information you could provide to fix problem wouldm be of great help.
Thanks again
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