Cascade Crew

fiveoformula · Posted: Wed Jul 28, 2010 9:45 pm Post subject:

Sorry I must have edited that right before you posted.

Mangus · Posted: Wed Jul 28, 2010 10:26 pm Post subject:

Most likely the Power Enrichment table, if there is one. 4D is a rarity.

fiveoformula · Posted: Wed Jul 28, 2010 10:52 pm Post subject:

PE AFR vs. PRM? I did try adjusting it lean a little bit, but I noticed no change.

Mangus · Posted: Wed Jul 28, 2010 11:35 pm Post subject:

Using a wideband? Try some non-pussyfooted changes in obvious RPM ranges and see what changes. Are you emulating or burning chips?

fiveoformula · Posted: Wed Jul 28, 2010 11:51 pm Post subject:

I am using a burn2, And I do have a wideband. Basically Its been nearly pegged rich at WOT but cruise and everything else is pretty good, Adjusting the BPW I got it to about 10.9 @ WOT today.

Mangus · Posted: Wed Jul 28, 2010 11:53 pm Post subject:

BPW vs what? Battery voltage? That'll change things more or less globally, or in a moderately uncontrollable way.

fiveoformula · Posted: Thu Jul 29, 2010 12:03 am Post subject:

I used the BPW constant

Twilightoptics · Posted: Thu Jul 29, 2010 5:40 am Post subject:

Pretty sure that constant changes everything.

fiveoformula · Posted: Thu Jul 29, 2010 2:20 pm Post subject:

Im having other problems as well right now, Just got done adjusting the valves, im following the Alldata on how to do it.
Started the engine, it spit and sputtered for a minute then died, and now I can't get it to restart. I can't figure out what went wrong...
I backed off the each rocker until the pushrod spun, tightened it to zero lash and then went one full turn like it says. And of course I had it on TDC and did Half the motor, then turned it over 180* and did the other half. Are these too tight or something?

Twilightoptics · Posted: Thu Jul 29, 2010 3:02 pm Post subject:

Sigh. 1/4 turn, not full turn. Never had any luck with the set engine and do 8 valves method. And if you have an aftermarket cam you can't do that at all. If we're actually concerned about the lifter pumping up more with higher oil pressure, you can't go a full turn. Way too tight. Make sure when the pushrod gets resistance from spinning and has no up-down play, that you aren't collapsing the lifter before your final 1/4 turn.

The only sure fire way to do it is the ICEO method that's been discussed here many times.

When the intake valve just closes, adjust the exhaust of that cylinder.
When the exhaust valve just opens, adjust the intake of that cylinder.

Start with all exhaust then go to all intakes following the firing order.
IE: 1E, 8E, 4E, 3E, 6E, 5E, 7E, 2E then do the intakes the same way. You only have to turn the motor over about two times to accomplish this.

fiveoformula · Posted: Thu Jul 29, 2010 6:40 pm Post subject:

Alright thanks paul, got it adjusted correctly and running again. But didn't solve the problem, I'll try retarding the distributor and see if I can get it to pop. Or could I turn back the timing thru the chip to do that?

Twilightoptics · Posted: Thu Jul 29, 2010 7:17 pm Post subject:

You could do it through the chip. There should be an initial timing constant. Set that HIGHER and that will reduce your overall timing.

By reducing the timing, we're trying to see if it's timing/hot spot related.

Was the POP at Wide Open Throttle? Or can it happen at other times? Definitely keep working that power enrichment type table down to get closer to 12.8ish.

fiveoformula · Posted: Thu Jul 29, 2010 8:04 pm Post subject:

So far I can only get it to happen at wot, and not every time either, I can't seem to find a pattern of what sort of driving makes it happen.

setting it higher reduces timing? so the constant set at say 6.00 isn't the same as 6* advanced?

fiveoformula · Posted: Thu Jul 29, 2010 9:00 pm Post subject:

Well I just tried going to my main spark advance table, cut timing about in half, roughly 9*-11* at WOT full load, didn't change the way the car felt AT ALL! like it didn't make the change in the chip, now im questioning if the changes I made so far have done anything. Bashy Bashy

I think I will try unplugging the EST wire real quick and try to get it to pop.
The only reason I don't go to the distributor is because I don't have a timing light handy. I swear nothing has gone right today.

fiveoformula · Posted: Sun Aug 01, 2010 8:08 pm Post subject:

Well this is one of the strangest things I've ever ran into with my car. Tonight about 8 o'clock I took the long way home to see if I could get it to do it's backfiring thing before I go and try retarding the timing to see if that effects it. Tonight I couldn't get it to pop once, even with several WOT pulls. I was thinking heat maybe playing a role in it, so I went thru the drive-thru at wendy's and got the coolant temp up to 220* (manual fan switch) and gave it WOT. no pop. But on the trip to work, it did it once or twice... But earlier the temp outside was hotter I suppose. does this sound like a pickup coil sort of problem?

Twilightoptics · Posted: Mon Aug 02, 2010 5:36 am Post subject:

Pickup would cause more than just an intermittant WOT problem.