well the last month my 86 N/A has been cutting out at high RPM,s so i took out my fuel filter and it didnt fix anything so i bought new plugs and it fixed it for like a week and then all of a sudden same thing so i got new wires 2 didnt do anything and the car runs fine untill 4,000 RPM then it would just stop accelerating like my secondary ports wernt opening but they are i could pump the gas and kinda fight through the dead zone but it didnt sound good so i stoped doing that and just drove it at low RPM anyways after a while it got worce and now it will only start then die right away start then die just like that is there another filter inside the tank or what??? i am lost ALSO i was messing with the plug wiers and got them all mixed up and i need a diagram because i dont have stock wires anymore and they haynes manual doesnt help me on this one anyone have pics of where there wiers go from leading igniter to the plugs and then same with the trailing just so i can be certain........ thanks for anyone who can help

 

Ok ..Plug Wires..the Leading Coil is the Front Coil.by the Headlight..the Trailing Coil is the One by the Firewall..The Leading Plug Wires: you CAN mix them up..it Will NOT effect the car..as long as they are on the BOTTOM Spark plugs..so Put a Spark plug Wire ON Each spark plug,Running from the LEADING coil..NOW,Trailing Coil Wires: they are SPECIFIC.you put the One Closest to the FRONT of the car to the FRONT Top Spark Plug(T1..it should also Be Marked ON the engine and ON the top of the Coil)...the Other Plug wire From the Trailing Coil(T2) you obviously Put to the Remaing Plug,which is the TOP Rear Spark plug....ALSO,check your Wires GOING to the AFM(the wires going to the Air Box,or Air Filter thingie.)..if that Big 12 pin Connection is OFF then the car will start and die.

 

Periods are your friend.

Hmm, cuts out above 4k rpm, spark plugs temporarily fixed it for a week, now car starts and dies.

The secondary ports just add power, they are 100% non-essential. The secondary fuel injectors kick in at 3800rpm to provide the extra fuel you need. See if the problem always occurs at exactly the same rpm, that might tell you if it's the secondary injectors. Hopefully someone more knowledgeable will give you more help.