A few month ago, I was able to go up to 7000 rpm. Now when I get to 6300 rpm it dies like I'm hitting the Rev limiter.
I have no ignition box and Comp hydraulic lifter. I adjusted the rocker arms to 1/4 turn and still no improvement.
either that or the mixture is a little fat. Now that the weather is warmer, the fat mixture is even fatter...making the problem worse. I deal with this every year at this time with ATVs (specifically the new 450cc sport ATVs...VERY sensitive carbs)
"it is better to appear ignorant than to open your mouth and remove all doubt"--Mark Twain
<font size=-1>[ This Message was edited by: mavman on 6/23/06 10:58am ]</font>
try changing your plugs.
i had a cougar that used to eat plugs every few weeks would go from 6500 to 5000 change plugs it would be fine fore a while.
turned out to be the coil i changed that and it was fine
<font size=-1>[ This Message was edited by: 68sportcoup on 6/23/06 11:09pm ]</font>
How do I know if the lifters are failing? I notes that they are hard all the time even when the engine has sat for a few days. before the pressure use to dissipate and the lifters will had the soft cushioning from the internal spring.