I have a 93 Mazda Rx-7 R1, and my engine is acting like it is missing. About a week ago i flooded the car because i didnt let it warm up, and i didnt change the plugs, but the car ran fine, but today i got my oil changed and when i started the car it just started missing really bad, it even killed out. So im guessing the spark plugs finallly fouled out, but my air/fuel ratio gauge said i was running really rich, it has never ran too rich before until now. I watched the people change my oil so i know they didnt screw with anything. But what do you guys think, could it be a fouled plug or something worse. And my car is modifed really well, that my have something to do with it . Thanks

 

Check the Map (BOOST) Sensor on the firewall. Make sure you didn't knock the vacuum lines off of it.

 

where excatly is the boost sensor at on the firewall

 

It's just above the oil filter - small black box, says "boost sensor", has a vaccum line with an in-line filter going to it. It's VERY easy to knock the stock rubber vacuum line off the sensor when changing the oil filter, which makes the car run like crap.

Dale

 

Ok i checked it and found out that the rubber hose was knocked off, im gonna start it up and check and see if that did it, thanks a lot

 

hey that was it! running fine now at 19 vacuum pressure