p0172 p0138 help
#2
going on a limb here, rich on bank 1. the 95 is a older style cpi engine with the problematic fuel system. 2 things happen, fuel pressure regulator leaks or the nylon fuel lines in the intake to the injector "nut kit" leak.
Seeing rich bank 1 from both sensors and the nut kit is on bank one side i'd say it is leaking raw fuel into the engine. Have a fuel pressure and leakdown test done or simply remove the upper intake and look for evidence of fuel washing, clean=fuel leaking(bad) black and sooty=good
Seeing rich bank 1 from both sensors and the nut kit is on bank one side i'd say it is leaking raw fuel into the engine. Have a fuel pressure and leakdown test done or simply remove the upper intake and look for evidence of fuel washing, clean=fuel leaking(bad) black and sooty=good
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