8 replies to this topic

[eldo]

Wondering if any of you people ever come across something like this-motor runs great except at 6000 rpm,then its like the rev limiter hits(no backfire,just does not rev any higher and makes like its misfiring)It's a carbed EW with MSD6al(tried another one that i know is good)and a Blaster 2 coil.Tried with and without different rev limiter chips,changed coil and plug wires(MSD and Taylors).Ignition timing is locked but problem never showed up when that was done.Changed new plugs.
Would a bad ignitor or bad wires from the distributor pickup to coil do something like that?It's kinda intermitent(bad more often then good)and so one minute i think it's fixed and then it shows up again next day.
Been trying to track this down for 3 weeks now (even took it to the dyno and hit it with a 100 shot of nitrous, hoping it would just blow up!-these motors are tough!)
Anyways hope someone has seen or heard about this and can help me out(before the 250 shot goes in)

Ed

[rpr]

Bad fuel filter(s). Put new ones in and see what happens...

[Rampage]

My car also does that, but my problem is that I turned the float level WAY down, before that it worked fine.... thats on my list of things to do... someday.

Cheers,
Mark

[rpr]

Or that. Try both.

[eldo]

Thanks guys,i'll try that tomorrow but i'll hang a fuel pressure gauge on the hood first to see if it falls off in the upper rpms.Never had this problem with the stock fuel pump-wierd.And even after changing to the Holley blue pump,it was okay for quite a few weeks.(i did run the tank pretty low recently though.)At least you have given me something to go on.
I Love this place!!!

Ed

[87Hybrid]

MSD6al

The l in the designation stands for limiter you should have a chip in it to limmit the revs, the chip plugs in and has the limit printed on it.

[D16CRX]

Yes he does, but the problem is the limiter kick in at 5300 no matter what chip he has in and even without a chip. THATS the issue.

[87sivtec]

I say throw the 250 shot in!

[eldo]

Well ,found the problem.I guess both sets of plug leads that i tried- each had one bad one!(found it when the motor was running and i got zapped good by #3 wire)So it revs good now(thanks to 86CR-X for the NGKs)except for the flooding carb (dirt or something in carb inlet valve ) this whole morning during the meet-especially when lined up at a lite with Rampage and D16CRX!!Sputter sputter while those guys just take off. Life is not fair -car ran great all the way home.)

Ed