engine sputtering?, 4k rpm why? Options

[GreatPumpkin]

ok so starting from a stopped position when in first gear, i start to go and i reach about 4000 rpm and the engine sputters and doesnt pull anymore. shortly after about a second the engine starts to pull again.? why is this ? distributer? coil? i dont know. spark plugs were replaced along with the wires not to long ago,maybe a month ago. answers please...... (IMG:style_emoticons/default/headbang.gif)

[ericread]

There's a lot to think about here. First, we have to determine where the issue is; Fuel, spark or mechanical? Since you have not said anything about an unusual sound, let's eliminate the mechanical issue.

Fuel; At 4K RPM, you're starting to use some fuel. Could it be fuel starvation? If you are accellerating to 4k RPM pretty quickly, the fuel pressure could go low for a bit, then catch up in the few seconds after initially hitting 4k. You're probably not accellerating above 4k the same way you were getting to 4k. So check your feul pressure system.

Another issue could be spark. I have experienced a dist cap that was cracked, but not enough that you could visibly see. However, at speed, the cap deformed a bit and caused a significant misfire. The bad cap gave me problems at specific rpm.

Preliminarily, still think this may be a fuel starvation issue. Fuel pump, fuel filter, pinched fuel line, clogged mesh filter in tank, or something like this.

If you get to 3500 rpm and slowly, very slowly raise the engine speed to 4000rpm, do you still experience this problem?

Just a thought or two...

Eric Read