I have a B21F with K-Jetronic/CIS fuel injection. I thought it would be a good idea to have an extra air flow sensor. Is this a good ideas, ie do they go bad? They're a royal pain to access. Today in the junkyard, I couldn't locate the bolts holding them down. I suspect that the bolts/nuts run parallel to the long axis of the engine. How do I remove the air flow sensor?

Few peoople here have a problem with the mechanical air flow sensors. You are correct. There are three mounting bolts, one in front and two in back. To remove one requires removing the fuel distributor or removing all the lines. Better to remove the entire system back to the fuel filter and fuel return line(air meter w/fuel distributor, Warmup regulator, injectors, cold start valve).

It is (somewhat) possible to remove it with fuel distributor installed, if you remove power steering pump and disconnect: line at fuel filter, return, CPR lines, ColdStart injector, and unbolt injectors. There was a bit or twisting to get it off of the 3 mounting bolts. Fortunately, there isnt usually a good reason to take this thing out - not much can go bad with it.....mine was VERY dirty though


NOAH
1980 245