ludefiend

plz help me my 85 runs flawlessly below 3500 rpm at witch point it will start to bog down at 4000 its pretty bad then at 4500 it feels like I have hit a rev limiter "drops to 4000 and back to 4500 then down again" i have replaced the plug cap and rotor, fuel filter and the wires are fairly new. I have tested the TPS MAF Coil and dist. all check out I have also cleaned the TB and intake; I am on my way to have my cat tested will let you know any ideas?

I have had this thing less than a month so I dont know what all is done to it I think he said he put a cam in it if that helps.

rdlsz24

That's probably a good thing! lol I've never taken mine past 4000. Actually that's where I put the redline mark on my tach that I added.

Rob

22mr2

any checks on the igniter?

ludefiend

I wanted to but My manuel does not have a procedure for that it says to check everything else ignitin related and if all that test good to replace it. Do you know how to test it?

ludefiend

Cat tested ok igniter checks out no engine codes any other ideas