April 11, 20159 yr comment_467496 "OH- and stop using the word ISSUE when you are talking about a PROBLEM. Issues and problems are not synonymous" Unless you work for the NSA... C Link to comment https://www.classiczcars.com/forums/topic/51277-77-280z-losing-pressure-when-pressing-throttle/?&page=2#findComment-467496 Share on other sites More sharing options...
April 11, 20159 yr Author comment_467505 Okay thanks for the help everyone. I ended up opening up the AFM and seeing if the previous owner had tampered with it at all and of course he had. The AFM was set for a rich fuel mixture. I ended up fixing that and the car is Running better. As for the problem with cylinders 3 and 6 yes the spark plugs do have combustion deposit and raw fuel on them. Also I did put new fuel into the car instead of running what was in there. Link to comment https://www.classiczcars.com/forums/topic/51277-77-280z-losing-pressure-when-pressing-throttle/?&page=2#findComment-467505 Share on other sites More sharing options...
April 11, 20159 yr comment_467508 Good news.You'll get plenty of help here. Link to comment https://www.classiczcars.com/forums/topic/51277-77-280z-losing-pressure-when-pressing-throttle/?&page=2#findComment-467508 Share on other sites More sharing options...
April 14, 20159 yr comment_467660 I'd go ahead and replace the plug wires as a first step. Bad wires can give you a weak spark and misfiring/stumbling under load. If that doesn't clear the problem up, then consider your injectors. I've had very good luck cleaning fuel varnish with Chemtool B12. Link to comment https://www.classiczcars.com/forums/topic/51277-77-280z-losing-pressure-when-pressing-throttle/?&page=2#findComment-467660 Share on other sites More sharing options...
April 14, 20159 yr comment_467675 I keep an "emergency box" of stuff, such as a set of new, premium sparkplug wires, cap & rotor, spark plugs, coil, etc. I didn't get it all at once, but bought things with the spare cash. I only use it temporarily to diagnose a problem, or for emergencies, so most of it has only been used for a few minutes. Edited April 14, 20159 yr by TomoHawk Link to comment https://www.classiczcars.com/forums/topic/51277-77-280z-losing-pressure-when-pressing-throttle/?&page=2#findComment-467675 Share on other sites More sharing options...
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